Audio added to firmware, Website File handling

Tags.md

@@ -0,0 +1,122 @@
+# Edi's Buzzer - Metadata Tags Format
+
+## Architektur-Übersicht
+Die Metadaten werden transparent an das Ende der rohen Audio-Daten angehängt. Das Format basiert auf einer strikten **Little-Endian** Byte-Reihenfolge und nutzt eine erweiterbare **TLV-Struktur** (Type-Length-Value) für die eigentlichen Datenblöcke.
+
+Das physische Layout einer Datei im Flash-Speicher sieht wie folgt aus:
+`[Audio-Rohdaten] [TLV-Block 1] ... [TLV-Block N] [Footer (8 Bytes)]`
+
+---
+
+## 1. Footer-Struktur
+Der Footer liegt exakt auf den letzten 8 Bytes der Datei (EOF - 8). Er dient als Ankerpunkt für den Parser, um die Metadaten rückwärts aus der Datei zu extrahieren. Das 8-Byte-Alignment stellt speichersichere Casts auf 32-Bit-ARM-Architekturen sicher.
+
+| Offset | Feld | Typ | Beschreibung |
+| :--- | :--- | :--- | :--- |
+| 0 | `total_size` | `uint16_t` | Gesamtgröße in Bytes (Summe aller TLV-Blöcke + 8 Bytes Footer). |
+| 2 | `version` | `uint16_t` | Format-Version. Aktuell `0x0001`. |
+| 4 | `magic` | `char[4]` | Fixe Signatur: `"TAG!"` (Hex: `54 41 47 21`). |
+
+---
+
+## 2. TLV-Header (Type-Length-Value)
+Jeder Metadaten-Block beginnt mit einem exakt 4 Bytes großen Header. Unbekannte Typen können vom Controller durch einen relativen Sprung (`fs_seek` um `length` Bytes) übersprungen werden.
+
+| Offset | Feld | Typ | Beschreibung |
+| :--- | :--- | :--- | :--- |
+| 0 | `type` | `uint8_t` | Definiert den Inhalt des Blocks (siehe Typen-Definitionen). |
+| 1 | `index` | `uint8_t` | Erlaubt die Fragmentierung großer Datensätze (z.B. bei JSON > 64 KB). Standard: `0x00`. |
+| 2 | `length` | `uint16_t` | Größe der folgenden Payload in Bytes (ohne diesen Header). |
+
+---
+
+## 3. Typen-Definitionen
+
+### Type `0x00`: Binary System Metadata
+Dieser Typ gruppiert maschinenlesbare, binäre Systeminformationen. Die Unterscheidung erfolgt über das `Index`-Feld.
+
+#### Index `0x00`: Audio Format
+Dieser Block konfiguriert den I2S-Treiber vor der Wiedergabe.
+* **Typ:** `0x00`
+* **Index:** `0x00`
+* **Länge:** `0x0008` (8 Bytes)
+* **Payload:** `[codec: 1 Byte] [bit_depth: 1 Byte] [reserved: 2 Bytes] [samplerate: 4 Bytes]`
+
+#### Index `0x01`: Audio CRC32
+Speichert die CRC32-Prüfsumme (IEEE) der reinen Audiodaten (vom Dateianfang bis zum Beginn des ersten TLV-Blocks). Dient Synchronisations-Tools für einen schnellen Integritäts- und Abgleich-Check, ohne die gesamte Datei neu hashen zu müssen.
+* **Typ:** `0x00`
+* **Index:** `0x01`
+* **Länge:** `0x0004` (4 Bytes)
+* **Payload:** `uint32_t` (Little-Endian)
+
+### Type `0x10`: JSON Metadata
+Dieser Block enthält Metadaten, die primär für das Host-System (z. B. das Python-Tool) zur Verwaltung, Kategorisierung und Anzeige bestimmt sind. Der Mikrocontroller ignoriert und überspringt diesen Block während der Audiowiedergabe.
+
+* **Typ:** `0x10`
+* **Länge:** Variabel
+* **Payload:** UTF-8-kodierter JSON-String (ohne Null-Terminator).
+
+#### Standardisierte JSON-Schlüssel
+Die nachfolgenden Schlüssel (Keys) sind im Basis-Standard definiert. Die Integration weiterer, proprietärer Schlüssel ist technisch möglich. Es wird jedoch empfohlen, dies mit Vorsicht zu handhaben, da zukünftige Standardisierungen diese Schlüsselnamen belegen könnten (Namenskollision).
+
+| Schlüssel | Datentyp | Beschreibung |
+| :--- | :--- | :--- |
+| `t` | String | Titel der Audiodatei |
+| `a` | String | Autor oder Ersteller |
+| `r` | String | Bemerkungen (Remarks) oder Beschreibung |
+| `c` | Array of Strings | Kategorien zur Gruppierung |
+| `dc` | String | Erstellungsdatum (Date Created), idealerweise nach ISO 8601 |
+| `ds` | String | Speicher- oder Änderungsdatum (Date Saved), idealerweise nach ISO 8601 |
+
+**Beispiel-Payload:**
+Ein vollständiger JSON-Datensatz gemäß dieser Spezifikation hat folgendes Format:
+
+```json
+{
+  "t": "Testaufnahme System A",
+  "a": "Entwickler-Team",
+  "r": "Überprüfung der Mikrofon-Aussteuerung.",
+  "c": ["Test", "Audio", "V1"],
+  "dc": "2026-03-05T13:00:00Z",
+  "ds": "2026-03-05T13:10:00Z"
+}
+```
+
+*(Hinweis zur Skalierbarkeit: Für zukünftige Erweiterungen können dedizierte TLV-Typen definiert werden, wie beispielsweise 0x11 für GZIP-komprimierte JSON-Daten oder 0x20 für binäre Bilddaten wie PNG-Cover).*
+
+---
+
+## 4. Lese-Algorithmus (Parser-Logik)
+
+Der Controller extrahiert die Hardware-Parameter nach folgendem Ablauf:
+
+1. **Footer lokalisieren:** * Gehe zu `EOF - 8`. Lese 8 Bytes in das `tag_footer_t` Struct.
+   * Validiere `magic == "TAG!"` und `version == 0x0001` (unter Berücksichtigung von Little-Endian Konvertierung via `sys_le16_to_cpu`).
+2. **Grenzen berechnen:**
+   * Lese `total_size`. 
+   * Die reinen Audiodaten enden bei `audio_limit = EOF - total_size`.
+   * Gehe zur Position `audio_limit`.
+3. **TLV-Blöcke iterieren:**
+   * Solange die aktuelle Leseposition kleiner als `EOF - 8` ist:
+     * Lese 4 Bytes in den `tlv_header_t`.
+     * Wenn `type == 0x00`: Lese die nächsten 8 Bytes in das `tlv_audio_format_t` Struct.
+     * Wenn `type != 0x00`: Führe `fs_seek(header.length, FS_SEEK_CUR)` aus.
+
+---
+
+## 5. Hex-Beispiel
+
+Eine fiktive Datei enthält Audio-Daten. Es soll ein PCM-Mono Format (16 Bit, 16 kHz) sowie ein kurzes JSON `{"t":"A"}` (9 Bytes) angehängt werden.
+
+**1. TLV 0x00 (Audio Format):**
+* Header: `00 00 08 00` (Type 0, Index 0, Length 8)
+* Payload: `00 10 00 00 80 3E 00 00` (Mono, 16-Bit, Reserved, 16000 Hz)
+
+**2. TLV 0x10 (JSON):**
+* Header: `10 00 09 00` (Type 16, Index 0, Length 9)
+* Payload: `7B 22 74 22 3A 22 41 22 7D` (`{"t":"A"}`)
+
+**3. Footer:**
+* Total Size: `2D 00` (45 Bytes = 12 Bytes Audio-TLV + 13 Bytes JSON-TLV + 12 Bytes Padding/Zusatz + 8 Bytes Footer) -> *Hinweis: Size ist in diesem Konstrukt abhängig vom genauen Payload.*
+* Version: `01 00`
+* Magic: `54 41 47 21` (`TAG!`)

firmware/CMakeLists.txt

@@ -4,6 +4,8 @@ list(APPEND ZEPHYR_EXTRA_MODULES ${CMAKE_CURRENT_SOURCE_DIR}/libs)
 
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 
-project(firmware)
+project(buzzer)
+
+include(${ZEPHYR_BASE}/samples/subsys/usb/common/common.cmake)
 
 target_sources(app PRIVATE src/main.c)

firmware/VERSION

@@ -0,0 +1,9 @@
+VERSION_MAJOR = 0
+VERSION_MINOR = 0
+PATCHLEVEL = 2
+VERSION_TWEAK = 0
+#if (IS_ENABLED(CONFIG_LOG))
+EXTRAVERSION = debug
+#else
+EXTRAVERSION = 0
+#endif

firmware/boards/nrf52840dk_nrf52840.overlay

@@ -4,5 +4,32 @@
     };
     aliases {
         qspi-flash = &mx25r64;
+        i2s-audio = &i2s0;
     };
 };
+
+&pinctrl {
+    i2s0_default: i2s0_default {
+        group1 {
+            psels = <NRF_PSEL(I2S_SCK_M, 0, 31)>, /* SCK/Bit Clock */
+                    <NRF_PSEL(I2S_LRCK_M, 0, 30)>, /* WS/Word Select */
+                    <NRF_PSEL(I2S_SDOUT, 0, 29)>;   /* SD/Serial Data */
+        };
+    };
+
+    i2s0_sleep: i2s0_sleep {
+        group1 {
+            psels = <NRF_PSEL(I2S_SCK_M, 0, 31)>,
+                    <NRF_PSEL(I2S_LRCK_M, 0, 30)>,
+                    <NRF_PSEL(I2S_SDOUT, 0, 29)>;
+            low-power-enable;
+        };
+    };
+};
+
+&i2s0 {
+    status = "okay";
+    pinctrl-0 = <&i2s0_default>;
+    pinctrl-1 = <&i2s0_sleep>;
+    pinctrl-names = "default", "sleep";
+};

firmware/libs/CMakeLists.txt

@@ -1,3 +1,6 @@
+add_subdirectory(fw_mgmt)
 add_subdirectory(fs_mgmt)
 add_subdirectory(ble_mgmt)
 add_subdirectory(buzz_proto)
+add_subdirectory(audio)
+add_subdirectory(event_mgmt)

firmware/libs/Kconfig

@@ -1,3 +1,6 @@
+rsource "fw_mgmt/Kconfig"
 rsource "fs_mgmt/Kconfig"
 rsource "ble_mgmt/Kconfig"
 rsource "buzz_proto/Kconfig"
+rsource "audio/Kconfig"
+rsource "event_mgmt/Kconfig"

firmware/libs/audio/CMakeLists.txt

@@ -0,0 +1,5 @@
+if(CONFIG_AUDIO)
+  zephyr_library()
+  zephyr_library_sources(src/audio.c)
+  zephyr_include_directories(include)
+endif()

firmware/libs/audio/Kconfig

@@ -0,0 +1,60 @@
+menuconfig AUDIO
+    bool "Audio handling"
+    default y
+    select I2S
+    select POLL
+
+if AUDIO
+    config AUDIO_NO_SAMPLES_SAMPLE
+        string "Audio no samples sample"
+        default "404"
+        help
+          Sound do play when no audio files are available. Must be in the sys directory of the filesystem.
+    config AUDIO_CACHE_SLAB_SIZE
+        int "Audio slab size"
+        default 4096
+        help
+          Audio cache slab size
+    config AUDIO_CACHE_SLAB_COUNT
+        int "Audio slab count"
+        default 4
+        help
+          Number of audio slabs in cache
+    
+    config AUDIO_THREAD_STACK_SIZE
+        int "Audio thread stack size"
+        default 4096
+        help
+          Stack size for audio processing thread
+    config AUDIO_THREAD_PRIORITY
+        int "Audio thread priority"
+        default 5
+        help
+          Priority for audio processing thread (lower number = higher priority)
+        
+    config AUDIO_PUMP_THREAD_STACK_SIZE
+        int "Audio pump thread stack size"
+        default 8192
+        help
+          Stack size for audio pump thread
+    config AUDIO_PUMP_THREAD_PRIORITY
+        int "Audio pump thread priority"
+        default 4
+        help
+          Priority for audio pump thread (lower number = higher priority)
+
+    config AUDIO_WORKQUEUE_STACK_SIZE
+        int "Audio workqueue stack size"
+        default 2048
+        help
+          Stack size for audio workqueue
+    config AUDIO_WORKQUEUE_PRIORITY
+        int "Audio workqueue priority"
+        default 10
+        help
+          Priority for audio workqueue (lower number = higher priority)
+
+    module = AUDIO
+    module-str = audio
+    source "subsys/logging/Kconfig.template.log_config"
+endif # AUDIO

firmware/libs/audio/include/audio.h

@@ -0,0 +1,33 @@
+#ifndef AUDIO_H
+#define AUDIO_H
+#include <zephyr/kernel.h>
+
+#include "fs_mgmt.h"
+
+/** Audio command message structure */
+struct audio_cmd_msg
+{
+    char filename[CONFIG_FS_MGMT_MAX_PATH_LENGTH]; // Wenn leer, nutze Fallback-Sound
+    bool is_interrupt;                      // True = sofort abbrechen, False = Enqueue
+};
+
+/**
+ * @brief Queues an audio playback command to the audio thread
+ * @param filename Name of the audio file to play. If empty, a random sound will be played
+ * @param is_interrupt If true, the command will interrupt any currently playing audio. If
+ * false, it will be enqueued and played after the current audio finishes
+ * @return 0 on success, negative error code on failure
+ */
+int audio_queue_play(const char *filename, bool is_interrupt);
+
+/**
+ * @brief Starts playback of a random audio file from the audio directory. This is a non-blocking call that signals the audio thread to select and play a random sound.
+ */
+void audio_start_random_playback(void);
+
+/**
+ * @brief Refreshes the list of available audio files
+ */
+void audio_refresh_files(void);
+
+#endif /* AUDIO_H */

firmware/libs/audio/src/audio.c

@@ -0,0 +1,622 @@
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/fs/fs.h>
+#include <zephyr/drivers/i2s.h>
+
+#include "audio.h"
+#include "fs_mgmt.h"
+#include "event_mgmt.h"
+
+LOG_MODULE_REGISTER(audio, CONFIG_AUDIO_LOG_LEVEL);
+
+const struct device *i2s_dev = DEVICE_DT_GET(DT_ALIAS(i2s_audio));
+
+K_MSGQ_DEFINE(audio_cmd_q, sizeof(struct audio_cmd_msg), 10, 4);
+K_SEM_DEFINE(audio_files_count_sem, 0, 1);
+K_SEM_DEFINE(audio_file_select_sem, 0, 1);
+
+K_MEM_SLAB_DEFINE(audio_cache_slab, CONFIG_AUDIO_CACHE_SLAB_SIZE, CONFIG_AUDIO_CACHE_SLAB_COUNT, 4);
+
+struct k_work_q audio_work_q;
+K_THREAD_STACK_DEFINE(audio_work_q_stack, CONFIG_AUDIO_WORKQUEUE_STACK_SIZE);
+struct k_work select_next_file_work;
+
+enum audio_thread_state_t
+{
+    AUDIO_ARMED,
+    AUDIO_PRECACHING,
+    AUDIO_WAIT_FOR_CACHE,
+    AUDIO_PLAYING,
+    AUDIO_DRAINING,
+};
+
+#define EV_PLAY_RANDOM BIT(0)
+#define EV_MSGQ_NOT_EMPTY BIT(1)
+#define EV_CACHE_READY BIT(2)
+#define EV_CACHE_DONE BIT(3)
+#define EV_STATE_STEP BIT(4)
+#define EV_AUTOSTART BIT(5)
+#define EV_ALL (EV_PLAY_RANDOM | EV_MSGQ_NOT_EMPTY | EV_CACHE_READY | EV_CACHE_DONE | EV_STATE_STEP | EV_AUTOSTART)
+
+K_EVENT_DEFINE(audio_events);
+
+#define AUDIO_CACHE_EVT_START BIT(0)
+#define AUDIO_CACHE_EVT_STOP BIT(1)
+
+K_EVENT_DEFINE(audio_cache_event);
+
+struct audio_ctx_t
+{
+    char next_file_name[CONFIG_FS_MGMT_MAX_PATH_LENGTH];
+    struct fs_file_t file;
+    bool is_file_open;
+    ssize_t audio_size;
+    ssize_t cached_bytes;
+} audio_ctx;
+
+static struct i2s_config i2s_cfg = {
+    .word_size = 16,
+    .channels = 2,
+    .format = I2S_FMT_DATA_FORMAT_I2S,
+    .options = I2S_OPT_BIT_CLK_MASTER | I2S_OPT_FRAME_CLK_MASTER,
+    .frame_clk_freq = 16000,
+    .mem_slab = &audio_cache_slab,
+    .block_size = CONFIG_AUDIO_CACHE_SLAB_SIZE,
+    .timeout = SYS_FOREVER_MS,
+};
+
+K_MUTEX_DEFINE(audio_ctx_mutex);
+
+atomic_t thread_state = ATOMIC_INIT(0);
+atomic_t num_files = ATOMIC_INIT(0);
+
+static uint8_t audio_mono_stage[CONFIG_AUDIO_CACHE_SLAB_SIZE / 2];
+
+int audio_queue_play(const char *filename, bool is_interrupt)
+{
+    if (is_interrupt)
+    {
+        /* Keep hardware state changes inside audio_thread to avoid cross-thread races. */
+        k_msgq_purge(&audio_cmd_q);
+    }
+
+    if (strlen(filename) == 0)
+    {
+        return 0;
+    }
+    if (k_msgq_num_free_get(&audio_cmd_q) == 0)
+    {
+        LOG_ERR("Audio command queue is full, cannot enqueue new command");
+        return -ENOMEM;
+    }
+    
+    struct audio_cmd_msg cmd;
+    strncpy(cmd.filename, filename, sizeof(cmd.filename) - 1);
+    cmd.filename[sizeof(cmd.filename) - 1] = '\0';
+    cmd.is_interrupt = is_interrupt;
+
+    if (k_msgq_put(&audio_cmd_q, &cmd, K_FOREVER) != 0)
+    {
+        LOG_ERR("Failed to enqueue audio command");
+        return -EFAULT;
+    }
+
+    /*
+     * Wake immediately for interrupts or when not currently playing.
+     * Non-interrupt commands during playback are picked up after drain.
+     */
+    if (is_interrupt || (atomic_get(&thread_state) != AUDIO_PLAYING))
+    {
+        k_event_set(&audio_events, EV_MSGQ_NOT_EMPTY);
+    }
+
+    LOG_DBG("Enqueued audio command: filename='%s', is_interrupt=%d", cmd.filename, cmd.is_interrupt);
+    return 0;
+}
+
+static int audio_select_random_sound(void)
+{
+    k_sem_reset(&audio_file_select_sem);
+    if (k_sem_take(&audio_files_count_sem, K_FOREVER) != 0)
+    {
+        LOG_ERR("Failed to take audio files count semaphore");
+        k_sem_give(&audio_files_count_sem);
+        k_mutex_unlock(&audio_ctx_mutex);
+        return -EFAULT;
+    }
+
+    int count = atomic_get(&num_files);
+
+    k_mutex_lock(&audio_ctx_mutex, K_FOREVER);
+    if (count == 0)
+    {
+        LOG_WRN("No audio files available to select, returning no files sound");
+        FS_MGMT_ASSEMBLE_PATH(audio_ctx.next_file_name, FS_SYSTEM_PATH, CONFIG_AUDIO_NO_SAMPLES_SAMPLE);
+
+        k_sem_give(&audio_file_select_sem);
+        k_sem_give(&audio_files_count_sem);
+        k_mutex_unlock(&audio_ctx_mutex);
+        return -ENOENT;
+    }
+
+    int random_index = k_cycle_get_32() % count;
+    struct fs_dir_t dir;
+    struct fs_dirent entry;
+    int rc;
+
+    fs_dir_t_init(&dir);
+    rc = fs_mgmt_pm_opendir(&dir, FS_AUDIO_PATH);
+    if (rc < 0)
+    {
+        LOG_ERR("Failed to open audio directory '%s': %d", FS_AUDIO_PATH, rc);
+        k_sem_give(&audio_file_select_sem);
+        k_sem_give(&audio_files_count_sem);
+        k_mutex_unlock(&audio_ctx_mutex);
+        return rc;
+    }
+
+    int current_index = 0;
+    bool found = false;
+    while (1)
+    {
+        rc = fs_readdir(&dir, &entry);
+        if (rc < 0)
+        {
+            LOG_ERR("Directory read error: %d", rc);
+            break;
+        }
+        if (entry.name[0] == '\0')
+        {
+            break;
+        }
+        if (entry.type == FS_DIR_ENTRY_FILE)
+        {
+            if (current_index == random_index)
+            {
+                FS_MGMT_ASSEMBLE_PATH(audio_ctx.next_file_name, FS_AUDIO_PATH, entry.name);
+                LOG_DBG("Selected random audio file: %s", audio_ctx.next_file_name);
+                found = true;
+                break;
+            }
+            current_index++;
+        }
+    }
+
+    fs_mgmt_pm_closedir(&dir);
+    k_sem_give(&audio_file_select_sem);
+    k_sem_give(&audio_files_count_sem);
+    k_mutex_unlock(&audio_ctx_mutex);
+    return found ? 0 : -ENOENT;
+}
+
+void audio_refresh_files(void)
+{
+    // Lokale Strukturen verwenden, um Reentrancy-Probleme zu vermeiden
+    struct fs_dir_t dir;
+    struct fs_dirent entry;
+    int count = 0;
+    int rc;
+
+    k_sem_reset(&audio_files_count_sem);
+
+    fs_dir_t_init(&dir);
+    // Nutze deinen PM-Wrapper für den Flash-Zugriff
+    rc = fs_mgmt_pm_opendir(&dir, FS_AUDIO_PATH);
+    if (rc < 0)
+    {
+        LOG_ERR("Failed to open audio directory '%s': %d", FS_AUDIO_PATH, rc);
+        atomic_set(&num_files, 0);
+        return;
+    }
+
+    while (1)
+    {
+        rc = fs_readdir(&dir, &entry);
+        if (rc < 0)
+        {
+            LOG_ERR("Directory read error: %d", rc);
+            break;
+        }
+        if (entry.name[0] == '\0')
+        {
+            break;
+        }
+        if (entry.type == FS_DIR_ENTRY_FILE)
+        {
+            count++;
+        }
+    }
+
+    fs_mgmt_pm_closedir(&dir);
+    k_sem_give(&audio_files_count_sem);
+    atomic_set(&num_files, count);
+    audio_select_random_sound();
+}
+
+static void select_next_file_work_handler(struct k_work *work)
+{
+    ARG_UNUSED(work);
+    LOG_DBG("Select next file work handler");
+    audio_select_random_sound();
+}
+
+static int audio_init(void)
+{
+    struct k_work_queue_config audio_work_q_config = {
+        .name = "audio_work_q",
+        .no_yield = false,
+        .essential = true,
+        .work_timeout_ms = 0};
+
+    k_work_queue_start(&audio_work_q,
+                       audio_work_q_stack,
+                       K_THREAD_STACK_SIZEOF(audio_work_q_stack),
+                       CONFIG_AUDIO_WORKQUEUE_PRIORITY, &audio_work_q_config);
+
+    k_work_init(&select_next_file_work, select_next_file_work_handler);
+
+    if (!device_is_ready(i2s_dev))
+    {
+        LOG_ERR("I2S device not ready");
+        return -ENODEV;
+    }
+
+    int rc = i2s_configure(i2s_dev, I2S_DIR_TX, &i2s_cfg);
+    if (rc < 0)
+    {
+        LOG_ERR("Failed to configure I2S: %d", rc);
+        return rc;
+    }
+
+    LOG_DBG("Audio module initialized");
+    return 0;
+}
+
+SYS_INIT(audio_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY); // Stelle sicher, dass dies nach der FS-Initialisierung erfolgt
+
+static void audio_trigger_next_file_selection(void)
+{
+    k_sem_reset(&audio_file_select_sem);
+    LOG_DBG("Triggering workq file selection");
+    k_work_submit_to_queue(&audio_work_q, &select_next_file_work);
+}
+
+void audio_start_random_playback(void)
+{
+    LOG_DBG("audio_start_random_playback called");
+    k_event_set(&audio_events, EV_PLAY_RANDOM);
+}
+
+void audio_thread(void *arg1, void *arg2, void *arg3)
+{
+    ARG_UNUSED(arg1);
+    ARG_UNUSED(arg2);
+    ARG_UNUSED(arg3);
+
+    k_event_wait(&event_mgmt_events, EVENT_MGMT_FS_READY, false, K_FOREVER);
+
+    audio_refresh_files();
+    atomic_set(&thread_state, AUDIO_PRECACHING);
+    k_event_set(&audio_events, EV_STATE_STEP);
+
+    while (1)
+    {
+        enum audio_thread_state_t state = atomic_get(&thread_state);
+        k_timeout_t timeout = (state == AUDIO_DRAINING) ? K_MSEC(10) : K_FOREVER;
+
+        uint32_t active_events = k_event_wait(&audio_events, EV_ALL, false, timeout);
+
+        if (active_events & EV_STATE_STEP)
+        {
+            k_event_clear(&audio_events, EV_STATE_STEP);
+        }
+
+        if (active_events & EV_PLAY_RANDOM)
+        {
+            LOG_DBG("Play random event received");
+            k_event_clear(&audio_events, EV_PLAY_RANDOM);
+
+            if (state == AUDIO_ARMED)
+            {
+                i2s_trigger(i2s_dev, I2S_DIR_TX, I2S_TRIGGER_START);
+                atomic_set(&thread_state, AUDIO_PLAYING);
+            }
+            else
+            {
+                k_event_set(&audio_cache_event, AUDIO_CACHE_EVT_STOP);
+                i2s_trigger(i2s_dev, I2S_DIR_TX, I2S_TRIGGER_DROP);
+
+                audio_select_random_sound();
+                atomic_set(&thread_state, AUDIO_PRECACHING);
+                k_event_set(&audio_events, EV_STATE_STEP);
+            }
+            continue;
+        }
+
+        switch (state)
+        {
+        case AUDIO_PRECACHING:
+            LOG_DBG("Audio thread starting precache task");
+            k_event_set(&audio_cache_event, AUDIO_CACHE_EVT_START);
+            atomic_set(&thread_state, AUDIO_WAIT_FOR_CACHE);
+            break;
+
+        case AUDIO_WAIT_FOR_CACHE:
+            if (active_events & EV_CACHE_READY)
+            {
+                k_event_clear(&audio_events, EV_CACHE_READY);
+                atomic_set(&thread_state, AUDIO_ARMED);
+
+                if (k_event_wait(&audio_events, EV_AUTOSTART, false, K_NO_WAIT) & EV_AUTOSTART)
+                {
+                    k_event_clear(&audio_events, EV_AUTOSTART);
+                    i2s_trigger(i2s_dev, I2S_DIR_TX, I2S_TRIGGER_START);
+                    atomic_set(&thread_state, AUDIO_PLAYING);
+                    LOG_DBG("Autostarting queued audio playback");
+                }
+                else
+                {
+                    LOG_DBG("System Armed. Waiting for Buzzer...");
+                    audio_trigger_next_file_selection();
+                }
+            }
+            break;
+
+        case AUDIO_ARMED:
+            if (active_events & EV_MSGQ_NOT_EMPTY)
+            {
+                k_event_clear(&audio_events, EV_MSGQ_NOT_EMPTY);
+                i2s_trigger(i2s_dev, I2S_DIR_TX, I2S_TRIGGER_DROP);
+                k_event_set(&audio_cache_event, AUDIO_CACHE_EVT_STOP);
+
+                struct audio_cmd_msg cmd;
+                k_msgq_get(&audio_cmd_q, &cmd, K_NO_WAIT);
+
+                k_mutex_lock(&audio_ctx_mutex, K_FOREVER);
+                strncpy(audio_ctx.next_file_name, cmd.filename, sizeof(audio_ctx.next_file_name) - 1);
+                audio_ctx.next_file_name[sizeof(audio_ctx.next_file_name) - 1] = '\0';
+                k_mutex_unlock(&audio_ctx_mutex);
+
+                k_event_set(&audio_events, EV_AUTOSTART);
+                atomic_set(&thread_state, AUDIO_PRECACHING);
+                k_event_set(&audio_events, EV_STATE_STEP);
+            }
+            break;
+
+        case AUDIO_PLAYING:
+            if (active_events & EV_MSGQ_NOT_EMPTY)
+            {
+                k_event_clear(&audio_events, EV_MSGQ_NOT_EMPTY);
+
+                struct audio_cmd_msg cmd;
+                if (k_msgq_peek(&audio_cmd_q, &cmd) == 0)
+                {
+                    if (cmd.is_interrupt)
+                    {
+                        i2s_trigger(i2s_dev, I2S_DIR_TX, I2S_TRIGGER_DROP);
+                        k_event_set(&audio_cache_event, AUDIO_CACHE_EVT_STOP);
+
+                        if (k_msgq_get(&audio_cmd_q, &cmd, K_NO_WAIT) == 0)
+                        {
+                            k_mutex_lock(&audio_ctx_mutex, K_FOREVER);
+                            strncpy(audio_ctx.next_file_name, cmd.filename, sizeof(audio_ctx.next_file_name) - 1);
+                            audio_ctx.next_file_name[sizeof(audio_ctx.next_file_name) - 1] = '\0';
+                            k_mutex_unlock(&audio_ctx_mutex);
+
+                            k_event_set(&audio_events, EV_AUTOSTART);
+                            atomic_set(&thread_state, AUDIO_PRECACHING);
+                            k_event_set(&audio_events, EV_STATE_STEP);
+                        }
+                    }
+                    else
+                    {
+                        LOG_DBG("Non-interrupt command queued during playback; will process after drain");
+                    }
+                }
+
+                break;
+            }
+
+            if (active_events & EV_CACHE_DONE)
+            {
+                k_event_clear(&audio_events, EV_CACHE_DONE);
+                i2s_trigger(i2s_dev, I2S_DIR_TX, I2S_TRIGGER_DRAIN);
+                atomic_set(&thread_state, AUDIO_DRAINING);
+            }
+            break;
+
+        case AUDIO_DRAINING:
+            if (k_mem_slab_num_free_get(&audio_cache_slab) == CONFIG_AUDIO_CACHE_SLAB_COUNT)
+            {
+                LOG_DBG("Audio for file drained, ready for next file");
+                if (k_msgq_num_used_get(&audio_cmd_q) > 0)
+                {
+                    k_event_set(&audio_events, EV_MSGQ_NOT_EMPTY);
+                }
+                else
+                {
+                    atomic_set(&thread_state, AUDIO_PRECACHING);
+                    k_event_set(&audio_events, EV_STATE_STEP);
+                }
+            }
+            break;
+        }
+    }
+}
+
+K_THREAD_DEFINE(audio_thread_id, CONFIG_AUDIO_THREAD_STACK_SIZE, audio_thread, NULL, NULL, NULL,
+                CONFIG_AUDIO_THREAD_PRIORITY, 0, 0);
+
+void audio_pump_thread(void *arg1, void *arg2, void *arg3)
+{
+    ARG_UNUSED(arg1);
+    ARG_UNUSED(arg2);
+    ARG_UNUSED(arg3);
+
+    uint8_t num_channels = 1;
+    void *mem_slab;
+    while (1)
+    {
+        uint32_t events = k_event_wait(&audio_cache_event, AUDIO_CACHE_EVT_START | AUDIO_CACHE_EVT_STOP, false, K_FOREVER);
+
+        if (events & AUDIO_CACHE_EVT_STOP)
+        {
+            k_mutex_lock(&audio_ctx_mutex, K_FOREVER);
+            if (audio_ctx.is_file_open)
+            {
+                fs_close(&audio_ctx.file);
+                audio_ctx.is_file_open = false;
+            }
+            k_mutex_unlock(&audio_ctx_mutex);
+
+            k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START | AUDIO_CACHE_EVT_STOP);
+            continue;
+        }
+
+        int rc = k_mem_slab_alloc(&audio_cache_slab, &mem_slab, K_NO_WAIT);
+        if (rc == -ENOMEM)
+        {
+            k_event_set(&audio_events, EV_CACHE_READY);
+            rc = k_mem_slab_alloc(&audio_cache_slab, &mem_slab, K_FOREVER);
+            if (k_event_wait(&audio_cache_event, AUDIO_CACHE_EVT_STOP, false, K_NO_WAIT))
+            {
+                k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                continue;
+            }
+        }
+
+        if (rc == 0)
+        {
+            k_mutex_lock(&audio_ctx_mutex, K_FOREVER);
+
+            if (!audio_ctx.is_file_open)
+            {
+                rc = fs_mgmt_pm_open(&audio_ctx.file, audio_ctx.next_file_name, FS_O_READ);
+                if (rc < 0)
+                {
+                    LOG_ERR("Failed to open audio file '%s': %d", audio_ctx.next_file_name, rc);
+                    k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                    k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START);
+                    k_mutex_unlock(&audio_ctx_mutex);
+                    continue;
+                }
+
+                audio_ctx.is_file_open = true;
+
+                // NEU: Größen- und Zähler-Initialisierung exklusiv hier!
+                audio_ctx.audio_size = fs_mgmt_get_audio_data_len(&audio_ctx.file);
+                audio_ctx.cached_bytes = 0;
+
+                LOG_DBG("Audio file '%s' opened for caching, size: %d", audio_ctx.next_file_name, (int)audio_ctx.audio_size);
+            }
+
+            if (audio_ctx.audio_size <= 0)
+            {
+                LOG_ERR("Invalid audio size for '%s': %d", audio_ctx.next_file_name, (int)audio_ctx.audio_size);
+                k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                fs_close(&audio_ctx.file);
+                audio_ctx.is_file_open = false;
+                k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START);
+                k_mutex_unlock(&audio_ctx_mutex);
+                continue;
+            }
+
+            ssize_t remaining_bytes = audio_ctx.audio_size - audio_ctx.cached_bytes;
+            if (remaining_bytes <= 0)
+            {
+                k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                fs_close(&audio_ctx.file);
+                audio_ctx.is_file_open = false;
+                k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START);
+                k_mutex_unlock(&audio_ctx_mutex);
+                k_event_set(&audio_events, EV_CACHE_DONE);
+                continue;
+            }
+
+            ssize_t bytes_to_read = MIN(CONFIG_AUDIO_CACHE_SLAB_SIZE / 2, remaining_bytes);
+            ssize_t bytes_read = fs_read(&audio_ctx.file, audio_mono_stage, bytes_to_read);
+
+            if (bytes_read <= 0) // <= 0, um EOF (0) und Fehler (< 0) abzufangen
+            {
+                if (bytes_read < 0)
+                {
+                    LOG_ERR("Failed to read audio data: %d", (int)bytes_read);
+                }
+                k_mem_slab_free(&audio_cache_slab, &mem_slab);
+
+                // EOF erreicht -> Datei schließen und START-Bit löschen
+                fs_close(&audio_ctx.file);
+                audio_ctx.is_file_open = false;
+                k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START);
+                k_mutex_unlock(&audio_ctx_mutex);
+                k_event_set(&audio_events, EV_CACHE_DONE);
+                continue;
+            }
+
+            audio_ctx.cached_bytes += bytes_read;
+            // LOG_DBG("Cached %u%% ", (int)((audio_ctx.cached_bytes * 100) / audio_ctx.audio_size));
+
+            if (bytes_read > CONFIG_AUDIO_CACHE_SLAB_SIZE / 2)
+            {
+                LOG_ERR("Read size %d exceeds half slab size %d", (int)bytes_read, CONFIG_AUDIO_CACHE_SLAB_SIZE / 2);
+                k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                fs_close(&audio_ctx.file);
+                audio_ctx.is_file_open = false;
+                k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START);
+                k_mutex_unlock(&audio_ctx_mutex);
+                continue;
+            }
+
+            if ((bytes_read & 0x1) != 0)
+            {
+                if (bytes_read >= (CONFIG_AUDIO_CACHE_SLAB_SIZE / 2))
+                {
+                    LOG_ERR("Odd mono byte count at half-slab boundary: %d", (int)bytes_read);
+                    k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                    fs_close(&audio_ctx.file);
+                    audio_ctx.is_file_open = false;
+                    k_event_clear(&audio_cache_event, AUDIO_CACHE_EVT_START);
+                    k_mutex_unlock(&audio_ctx_mutex);
+                    continue;
+                }
+
+                audio_mono_stage[bytes_read] = 0;
+                bytes_read++;
+            }
+
+            if (bytes_read < CONFIG_AUDIO_CACHE_SLAB_SIZE / 2)
+            {
+                memset(audio_mono_stage + bytes_read, 0, (CONFIG_AUDIO_CACHE_SLAB_SIZE / 2) - bytes_read);
+                bytes_read = CONFIG_AUDIO_CACHE_SLAB_SIZE / 2;
+            }
+
+            if (num_channels == 1)
+            {
+                uint8_t *dst = (uint8_t *)mem_slab;
+
+                for (size_t i = 0; i < (size_t)bytes_read; i += 2)
+                {
+                    uint8_t lo = audio_mono_stage[i];
+                    uint8_t hi = audio_mono_stage[i + 1];
+                    size_t out = i * 2;
+
+                    dst[out] = lo;
+                    dst[out + 1] = hi;
+                    dst[out + 2] = lo;
+                    dst[out + 3] = hi;
+                }
+            }
+
+            k_mutex_unlock(&audio_ctx_mutex);
+            if (i2s_write(i2s_dev, mem_slab, CONFIG_AUDIO_CACHE_SLAB_SIZE) < 0)
+            {
+                LOG_ERR("Failed to write audio data to I2S");
+                k_mem_slab_free(&audio_cache_slab, &mem_slab);
+                continue;
+            }
+        }
+    }
+}
+
+K_THREAD_DEFINE(audio_cache_thread_id, CONFIG_AUDIO_PUMP_THREAD_STACK_SIZE, audio_pump_thread, NULL, NULL, NULL,
+                CONFIG_AUDIO_PUMP_THREAD_PRIORITY, 0, 0);

firmware/libs/ble_mgmt/Kconfig

@@ -1,5 +1,6 @@
 menuconfig BLE_MGMT
     bool "Bluetooth Management"
+    default n
     select BT
     select BT_PERIPHERAL
     select BT_LOG_LEVEL_WARN
@@ -8,6 +9,12 @@ menuconfig BLE_MGMT
       Library for initializing and managing Bluetooth functionality.
 
 if BLE_MGMT
+    config BLE_MGMT_TX_QUEUE_DEPTH
+        int "BLE TX queue depth"
+        default 32
+        help
+          Number of notification payloads that can be queued in the BLE transport.
+
     config BLE_MGMT_DEFAULT_DEVICE_NAME
         string "Default Bluetooth Device Name"
         default "Edis Buzzer"
@@ -22,39 +29,61 @@ if BLE_MGMT
             help
                Maximal advertising interval. 160 equals to 100ms.
     
-# 1. MTU und Data Length (Maximale Paketgrößen)
+    # Airtime 
-    config BT_L2CAP_TX_MTU
+    config BT_CTLR_SDC_MAX_CONN_EVENT_LEN_DEFAULT
-        default 247
+        default 4000000
+    
+    # MTU Setup
     config BT_BUF_ACL_RX_SIZE
-        default 251
+        default 502
     config BT_BUF_ACL_TX_SIZE
-        default 251
+        default 502
+    config BT_L2CAP_TX_MTU
+        default 498
     config BT_CTLR_DATA_LENGTH_MAX
         default 251
+
+    # Buffers
+    config BT_BUF_ACL_TX_COUNT
+        default 15
+    config BT_L2CAP_TX_BUF_COUNT
+        default 15
+    config BT_CONN_TX_MAX
+        default 15
+    config BT_CTLR_SDC_TX_PACKET_COUNT
+        default 15
+    config BT_CTLR_SDC_RX_PACKET_COUNT
+        default 15
+    config BT_BUF_EVT_RX_COUNT
+        default 16
+    
+    # Callbacks
+    config BT_USER_PHY_UPDATE
+        default y
     config BT_USER_DATA_LEN_UPDATE
         default y
 
-    # 2. Physical Layer (Erlaubt 2M PHY)
+    # Automatic updates
-    config BT_USER_PHY_UPDATE
+    config BT_AUTO_PHY_UPDATE
+        default y
+    config BT_AUTO_DATA_LEN_UPDATE
+        default y
+    config BT_GAP_AUTO_UPDATE_CONN_PARAMS
         default y
 
-    # 3. Flow-Control und Queues (High Throughput, Host + SDC Controller synchronisiert)
+    # Preferred defaults
-    config BT_HCI_ACL_FLOW_CONTROL
+    config BT_PERIPHERAL_PREF_MIN_INT
-        default y
+        default 6
-    config BT_BUF_EVT_RX_COUNT
+    config BT_PERIPHERAL_PREF_MAX_INT
-        default 22
+        default 40
-    config BT_BUF_ACL_TX_COUNT
+    config BT_PERIPHERAL_PREF_LATENCY
-        default 20
+        default 0
-    config BT_L2CAP_TX_BUF_COUNT
+    config BT_PERIPHERAL_PREF_TIMEOUT
-        default 20
+        default 400
-    config BT_CONN_TX_MAX
-        default 20
 
-    # 4. SDC Controller Buffering (an Host-Tiefen angeglichen)
+    # Connections
-    config BT_CTLR_SDC_TX_PACKET_COUNT
+    config BT_MAX_CONN
-        default 20
+        default 2
-    config BT_CTLR_SDC_RX_PACKET_COUNT
-        default 20
         
     module = BLE_MGMT
     module-str = ble_mgmt

firmware/libs/ble_mgmt/src/ble_mgmt.c

@@ -5,6 +5,8 @@
 #include <zephyr/bluetooth/gatt.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/bluetooth/gatt.h>
+#include <zephyr/bluetooth/conn.h>
+
 #include <string.h>
 
 #include "ble_mgmt.h"
@@ -24,7 +26,9 @@ static struct bt_uuid_128 buzz_tx_uuid = BT_UUID_INIT_128(BUZZ_TX_UUID_VAL);
 
 static ble_mgmt_rx_cb_t app_rx_cb = NULL;
 static bool notify_enabled = false;
+
 static uint16_t current_tx_mtu = 23;
+static uint16_t current_rx_mtu = 23;
 
 #define MAX_ADV_NAME_LEN 29
 static char current_device_name[MAX_ADV_NAME_LEN + 1];
@@ -52,6 +56,7 @@ static void att_mtu_updated(struct bt_conn *conn, uint16_t tx, uint16_t rx)
 {
     LOG_INF("MTU exchanged: TX %u bytes, RX %u bytes", tx, rx);
     current_tx_mtu = tx;
+    current_rx_mtu = rx;
 }
 
 static ssize_t rx_cb(struct bt_conn *conn, const struct bt_gatt_attr *attr,
@@ -60,7 +65,8 @@ static ssize_t rx_cb(struct bt_conn *conn, const struct bt_gatt_attr *attr,
     LOG_DBG("Received %u bytes", len);
     LOG_HEXDUMP_DBG(buf, len, "Data:");
 
-    if (app_rx_cb) {
+    if (app_rx_cb)
+    {
         app_rx_cb((const uint8_t *)buf, len);
     }
     return len;
@@ -69,25 +75,25 @@ static ssize_t rx_cb(struct bt_conn *conn, const struct bt_gatt_attr *attr,
 static void tx_ccc_cfg_changed(const struct bt_gatt_attr *attr, uint16_t value)
 {
     notify_enabled = (value == BT_GATT_CCC_NOTIFY);
-    LOG_DBG("Notifications %s", notify_enabled ? "enabled" : "disabled");
+    LOG_INF("Notifications %s", notify_enabled ? "enabled" : "disabled");
 }
 
 BT_GATT_SERVICE_DEFINE(ble_mgmt_svc,
-    BT_GATT_PRIMARY_SERVICE(&buzz_service_uuid),
+                       BT_GATT_PRIMARY_SERVICE(&buzz_service_uuid),
-    BT_GATT_CHARACTERISTIC(&buzz_rx_uuid.uuid, BT_GATT_CHRC_WRITE_WITHOUT_RESP,
+                       BT_GATT_CHARACTERISTIC(&buzz_rx_uuid.uuid, BT_GATT_CHRC_WRITE_WITHOUT_RESP,
-                           BT_GATT_PERM_WRITE, NULL, rx_cb, NULL),
+                                              BT_GATT_PERM_WRITE, NULL, rx_cb, NULL),
-    BT_GATT_CHARACTERISTIC(&buzz_tx_uuid.uuid, BT_GATT_CHRC_NOTIFY,
+                       BT_GATT_CHARACTERISTIC(&buzz_tx_uuid.uuid, BT_GATT_CHRC_NOTIFY,
-                           BT_GATT_PERM_NONE, NULL, NULL, NULL),
+                                              BT_GATT_PERM_NONE, NULL, NULL, NULL),
-    BT_GATT_CCC(tx_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE)
+                       BT_GATT_CCC(tx_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE));
-);
 
 uint16_t ble_mgmt_get_max_payload(void)
 {
     /* Kappe die verhandelte MTU auf die hart konfigurierte Zephyr-Puffergrenze */
-    uint16_t effective_mtu = current_tx_mtu;
+    uint16_t effective_mtu = MIN(current_tx_mtu, current_rx_mtu);
 
 #ifdef CONFIG_BT_L2CAP_TX_MTU
-    if (effective_mtu > CONFIG_BT_L2CAP_TX_MTU) {
+    if (effective_mtu > CONFIG_BT_L2CAP_TX_MTU)
+    {
         effective_mtu = CONFIG_BT_L2CAP_TX_MTU;
     }
 #endif
@@ -98,19 +104,23 @@ uint16_t ble_mgmt_get_max_payload(void)
 
 int ble_mgmt_send(const uint8_t *data, uint16_t len)
 {
-    if (!notify_enabled) {
+    if (!notify_enabled)
+    {
         return -EACCES;
     }
     int rc;
 
-    do {
+    do
+    {
         rc = bt_gatt_notify(NULL, &ble_mgmt_svc.attrs[4], data, len);
-        if (rc == -ENOMEM) {
+        if (rc == -ENOMEM)
+        {
             k_sleep(K_MSEC(5)); // Thread pausieren, bis TX-Buffer frei wird
         }
     } while (rc == -ENOMEM);
 
-    if (rc) {
+    if (rc)
+    {
         LOG_ERR("Failed to send notification (err %d)", rc);
         return rc;
     }
@@ -120,7 +130,8 @@ int ble_mgmt_send(const uint8_t *data, uint16_t len)
 /* Interne Hilfsfunktion zur Zuweisung des Namens */
 static void set_device_name(const char *name)
 {
-    if (!name) {
+    if (!name)
+    {
         return;
     }
 
@@ -144,7 +155,8 @@ int ble_mgmt_update_adv_name(const char *new_name)
     set_device_name(new_name);
 
     rc = bt_le_adv_start(&adv_param, ad, ARRAY_SIZE(ad), sd, ARRAY_SIZE(sd));
-    if (rc) {
+    if (rc)
+    {
         LOG_ERR("Advertising failed to restart after name update (err %d)", rc);
         return rc;
     }
@@ -153,40 +165,10 @@ int ble_mgmt_update_adv_name(const char *new_name)
     return 0;
 }
 
-int ble_mgmt_init(ble_mgmt_rx_cb_t rx_cb, const char *device_name)
-{
-    int rc;
-
-    app_rx_cb = rx_cb;
-
-    static struct bt_gatt_cb gatt_callbacks = {
-    .att_mtu_updated = att_mtu_updated,
-    };
-
-    bt_gatt_cb_register(&gatt_callbacks);
-
-    rc = bt_enable(NULL);
-    if (rc) {
-        LOG_ERR("Bluetooth init failed (err %d)", rc);
-        return rc;
-    }
-
-    const char *name_to_use = (device_name != NULL) ? device_name : CONFIG_BLE_MGMT_DEFAULT_DEVICE_NAME;
-    set_device_name(name_to_use);
-
-    rc = bt_le_adv_start(&adv_param, ad, ARRAY_SIZE(ad), sd, ARRAY_SIZE(sd));
-    if (rc) {
-        LOG_ERR("Advertising failed to start (err %d)", rc);
-        return rc;
-    }
-
-    LOG_INF("Bluetooth initialized. Adv-Name: %s", current_device_name);
-    return 0;
-}
-
 static void connected(struct bt_conn *conn, uint8_t err)
 {
-    if (err) {
+    if (err)
+    {
         LOG_ERR("Connection failed (err 0x%02x)", err);
         return;
     }
@@ -195,50 +177,38 @@ static void connected(struct bt_conn *conn, uint8_t err)
     struct bt_conn_info info;
 
     int rc = bt_conn_get_info(conn, &info);
-    if (rc == 0) {
+    if (rc == 0)
+    {
         bt_addr_le_to_str(info.le.dst, addr_str, sizeof(addr_str));
         LOG_INF("Connected to %s", addr_str);
-        
+        LOG_INF("Role: %s", info.role == BT_CONN_ROLE_CENTRAL ? "Central" : "Peripheral");
-        /* Nur noch die Rolle ausgeben, da Timing-Parameter hier deprecated sind */
+    }
-        LOG_DBG("Role: %s", info.role == BT_CONN_ROLE_CENTRAL ? "Central" : "Peripheral");
+    else
-    } else {
+    {
         LOG_INF("Connected (info retrieval failed)");
     }
-    struct bt_conn_le_phy_param phy_param = {
-        .options = BT_CONN_LE_PHY_OPT_NONE,
-        .pref_tx_phy = BT_GAP_LE_PHY_2M,
-        .pref_rx_phy = BT_GAP_LE_PHY_2M,
-    };
-    rc = bt_conn_le_phy_update(conn, &phy_param);
-    if (rc) {
-        LOG_WRN("PHY update failed (err %d)", rc);
-    }
-    struct bt_le_conn_param *param = BT_LE_CONN_PARAM(12, 24, 0, 400);
-    rc = bt_conn_le_param_update(conn, param);
-    if (rc) {
-        LOG_WRN("Connection update failed (err %d)", rc);
-    }
 }
 
 static void disconnected(struct bt_conn *conn, uint8_t reason)
 {
-    LOG_DBG("Disconnected (reason 0x%02x)", reason);
+    LOG_INF("Disconnected (reason 0x%02x)", reason);
 
     /* Startet Advertising mit dem global definierten Setup neu */
     int rc = bt_le_adv_start(&adv_param, ad, ARRAY_SIZE(ad), sd, ARRAY_SIZE(sd));
-    if (rc) {
+    if (rc)
+    {
         LOG_ERR("Advertising failed to restart (err %d)", rc);
-    } else {
+    }
-        LOG_DBG("Advertising successfully restarted");
+    else
+    {
+        LOG_INF("Advertising successfully restarted");
     }
 }
 
 static void le_phy_updated(struct bt_conn *conn, struct bt_conn_le_phy_info *param)
 {
-    const char *tx_phy_str = (param->tx_phy == BT_GAP_LE_PHY_2M) ? "2M" : 
+    const char *tx_phy_str = (param->tx_phy == BT_GAP_LE_PHY_2M) ? "2M" : (param->tx_phy == BT_GAP_LE_PHY_1M) ? "1M" : "Coded/Unknown";
-                             (param->tx_phy == BT_GAP_LE_PHY_1M) ? "1M" : "Coded/Unknown";
+    const char *rx_phy_str = (param->rx_phy == BT_GAP_LE_PHY_2M) ? "2M" : (param->rx_phy == BT_GAP_LE_PHY_1M) ? "1M" : "Coded/Unknown";
-    const char *rx_phy_str = (param->rx_phy == BT_GAP_LE_PHY_2M) ? "2M" : 
-                             (param->rx_phy == BT_GAP_LE_PHY_1M) ? "1M" : "Coded/Unknown";
 
     LOG_INF("LE PHY updated: TX PHY %s, RX PHY %s", tx_phy_str, rx_phy_str);
 }
@@ -256,3 +226,35 @@ BT_CONN_CB_DEFINE(conn_callbacks) = {
     .le_param_updated = le_param_updated,
     .le_phy_updated = le_phy_updated,
 };
+
+int ble_mgmt_init(ble_mgmt_rx_cb_t rx_cb, const char *device_name)
+{
+    int rc;
+    app_rx_cb = rx_cb;
+
+    static struct bt_gatt_cb gatt_callbacks = {
+        .att_mtu_updated = att_mtu_updated,
+    };
+
+    bt_gatt_cb_register(&gatt_callbacks);
+
+    rc = bt_enable(NULL);
+    if (rc)
+    {
+        LOG_ERR("Bluetooth init failed (err %d)", rc);
+        return rc;
+    }
+
+    const char *name_to_use = (device_name != NULL) ? device_name : CONFIG_BLE_MGMT_DEFAULT_DEVICE_NAME;
+    set_device_name(name_to_use);
+
+    rc = bt_le_adv_start(&adv_param, ad, ARRAY_SIZE(ad), sd, ARRAY_SIZE(sd));
+    if (rc)
+    {
+        LOG_ERR("Advertising failed to start (err %d)", rc);
+        return rc;
+    }
+
+    LOG_INF("Bluetooth initialized. Adv-Name: %s", current_device_name);
+    return 0;
+}

firmware/libs/buzz_proto/Kconfig

@@ -1,12 +1,13 @@
 menuconfig BUZZ_PROTO
     bool "Buzzer Protocol"
+    default y
     select CRC
     help
       Library for initializing and managing the buzzer protocol.
 
     config BUZZ_PROTO_SLAB_SIZE
         int "Slab Size"
-        default 256
+        default 512
         help
           Size of the memory slabs used for message buffers. Must be large enough to hold the largest expected message.
 
@@ -18,7 +19,7 @@ menuconfig BUZZ_PROTO
 
     config BUZZ_PROTO_MSGQ_SIZE
         int "Message Queue Size"
-        default 16
+        default 64
         help
           Number of messages that can be queued for processing. Adjust based on expected message burstiness.
           

firmware/libs/buzz_proto/include/buzz_proto.h

@@ -15,6 +15,7 @@ enum buzz_frame_type
     BUZZ_FRAME_RESPONSE = 0x10,
     BUZZ_FRAME_ACK = 0x11,
     BUZZ_FRAME_ERROR = 0x12,
+    BUZZ_FRAME_SUCCESS = 0x13,
 
     BUZZ_FRAME_FILE_START = 0x20,
     BUZZ_FRAME_FILE_CHUNK = 0x21,
@@ -34,9 +35,16 @@ enum buzz_data_type
     BUZZ_DATA_PROTO_INFO = 0x01,
     BUZZ_DATA_DEVICE_INFO = 0x02,
     BUZZ_DATA_FS_INFO = 0x03,
+    BUZZ_DATA_FW_INFO = 0x04,
 
     BUZZ_DATA_FILE_GET = 0x20,
     BUZZ_DATA_FILE_PUT = 0x21,
+    BUZZ_DATA_TAGS_GET = 0x22,
+    BUZZ_DATA_TAGS_PUT = 0x23,
+    BUZZ_DATA_RM_FILE = 0x24,
+    BUZZ_DATA_RENAME_FILE = 0x25,
+
+    BUZZ_DATA_FW_UPDATE = 0x30,
 
     BUZZ_DATA_LS = 0x40,
 };
@@ -62,6 +70,11 @@ struct __attribute__((packed)) buzz_resp_error
     uint16_t error_code; /* Bis 0xFF reserviert für Standard-Fehler, 0x100+ für spezifische Fehler */
 };
 
+struct __attribute__((packed)) buzz_resp_success
+{
+    uint8_t data_type; /* Der Befehl, der erfolgreich war (z.B. BUZZ_DATA_FILE_PUT) */
+};
+
 /* Payload für eine Standard-Anfrage (Request) */
 struct __attribute__((packed)) buzz_request_payload
 {
@@ -76,6 +89,17 @@ struct __attribute__((packed)) buzz_resp_proto_version
     uint16_t max_chunk_size; /* Little Endian */
 };
 
+/* Payload für die Geräteinformationen */
+struct __attribute__((packed)) buzz_resp_device_info
+{
+    uint8_t data_type;             /* BUZZ_DATA_DEVICE_INFO */
+    uint8_t device_id[8];          /* EUI64 oder ähnliche eindeutige ID */
+    uint8_t board_name_length;     /* Länge des Board-Namens */
+    uint8_t board_revision_length; /* Länge der Board-Revision */
+    uint8_t soc_name_length;       /* Länge des SOC-Namens */
+    char data[];                   /* Variabler String ohne Null-Terminierung: [board_name][board_revision][soc_name] */
+};
+
 /* Payload für die Dateisystem-Informationen */
 struct __attribute__((packed)) buzz_resp_fs_info
 {
@@ -88,6 +112,33 @@ struct __attribute__((packed)) buzz_resp_fs_info
     uint8_t data[];            /* Pfadnamen */
 };
 
+/* Payload für die Firmware-Infos */
+struct __attribute__((packed)) buzz_resp_fw_info
+{
+    uint8_t data_type;             /* BUZZ_DATA_FW_INFO */
+    uint8_t fw_status;             /* fw_state_t */
+    uint32_t slot1_size;           /* Größe des Slot1-Partitionsbereichs (Little Endian) */
+    uint8_t fw_version_length;     /* Länge der Firmware-Versionszeichenkette */
+    uint8_t kernel_version_length; /* Länge der Kernel-Versionszeichenkette */
+    char data[];                   /* Variabler String ohne Null-Terminierung: [fw_version][kernel_version] */
+};
+/* Payload für das Entfernen einer Datei */
+struct __attribute__((packed)) buzz_rm_file_payload
+{
+    uint8_t data_type; /* BUZZ_DATA_RM_FILE */
+    uint8_t path_length;
+    char path[]; /* Variabler String ohne Null-Terminierung */
+};
+
+/* Payload für das Umbenennen einer Datei */
+struct __attribute__((packed)) buzz_rename_file_payload
+{
+    uint8_t data_type; /* BUZZ_DATA_RENAME_FILE */
+    uint8_t old_path_length;
+    uint8_t new_path_length;
+    char paths[]; /* Variabler String ohne Null-Terminierung */
+};
+
 /* Payload für das Credit-System (ACK) */
 struct __attribute__((packed)) buzz_ack_payload
 {
@@ -142,4 +193,16 @@ void buzz_proto_buf_free(uint8_t **buf);
 /* Übergabe eines empfangenen Frames an den Protokoll-Thread */
 int buzz_proto_submit_frame(struct buzz_frame_msg *msg);
 
+/* Gibt die Anzahl der freien Slabs zurück (abzüglich Reserve) */
+uint16_t buzz_proto_get_free_rx_slabs(void);
+
+/* Baut und sendet ein ACK Frame */
+void buzz_proto_send_ack(buzz_transport_reply_fn reply_cb, uint16_t credits);
+
+/* Sendet einen Success-Frame unter Wiederverwendung eines bestehenden Slabs (Zero-Copy) */
+void buzz_proto_send_success_reusing_slab(buzz_transport_reply_fn reply_cb, uint8_t data_type, uint8_t *slab);
+
+/* Sendet einen Error-Frame unter Wiederverwendung eines bestehenden Slabs (Zero-Copy) */
+void buzz_proto_send_error_reusing_slab(buzz_transport_reply_fn reply_cb, uint16_t error_code, uint8_t *slab);
+
 #endif /* BUZZ_PROTO_H */

firmware/libs/buzz_proto/src/buzz_proto.c

@@ -8,6 +8,7 @@
 
 #include "buzz_proto.h"
 #include "fs_mgmt.h"
+#include "fw_mgmt.h"
 
 LOG_MODULE_REGISTER(buzz_proto, CONFIG_BUZZ_PROTO_LOG_LEVEL);
 K_MEM_SLAB_DEFINE(buzz_proto_slabs, CONFIG_BUZZ_PROTO_SLAB_SIZE, CONFIG_BUZZ_PROTO_SLAB_COUNT, 4);
@@ -63,7 +64,7 @@ enum stream_state_t
 
 static enum stream_state_t current_stream = STREAM_IDLE;
 
-static char src_path[FS_MGMT_MAX_PATH_LENGTH], dst_path[FS_MGMT_MAX_PATH_LENGTH];
+static char src_path[CONFIG_FS_MGMT_MAX_PATH_LENGTH], dst_path[CONFIG_FS_MGMT_MAX_PATH_LENGTH];
 
 int buzz_proto_buf_alloc(uint8_t **buf)
 {
@@ -74,7 +75,7 @@ void buzz_proto_buf_free(uint8_t **buf)
 {
     if (buf && *buf)
     {
-        k_mem_slab_free(&buzz_proto_slabs, (void **)*buf);
+        k_mem_slab_free(&buzz_proto_slabs, *buf);
         *buf = NULL;
     }
 }
@@ -84,6 +85,8 @@ int buzz_proto_submit_frame(struct buzz_frame_msg *msg)
     return k_msgq_put(&buzz_proto_msgq, msg, K_NO_WAIT);
 }
 
+static void send_stream_error(buzz_transport_reply_fn reply_cb, uint16_t error_code);
+
 static void send_error_frame(struct buzz_frame_msg *msg, uint16_t error_code)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
@@ -99,10 +102,70 @@ static void send_error_frame(struct buzz_frame_msg *msg, uint16_t error_code)
     }
 }
 
+static void send_stream_error(buzz_transport_reply_fn reply_cb, uint16_t error_code)
+{
+    uint8_t *buf = NULL;
+    if (reply_cb == NULL || buzz_proto_buf_alloc(&buf) != 0)
+    {
+        return;
+    }
+    struct buzz_frame_msg err_msg = {.data_ptr = buf, .reply_cb = reply_cb};
+    send_error_frame(&err_msg, error_code);
+    buzz_proto_buf_free(&buf);
+}
+
+uint16_t buzz_proto_get_free_rx_slabs(void)
+{
+    uint32_t free_slabs = k_mem_slab_num_free_get(&buzz_proto_slabs);
+    return (free_slabs > 4) ? (uint16_t)(free_slabs - 4) : 0;
+}
+
+void buzz_proto_send_ack(buzz_transport_reply_fn reply_cb, uint16_t credits)
+{
+    if (!reply_cb || credits == 0)
+        return;
+    uint8_t *buf;
+    if (buzz_proto_buf_alloc(&buf) == 0)
+    {
+        struct buzz_proto_header *hdr = (struct buzz_proto_header *)buf;
+        hdr->frame_type = BUZZ_FRAME_ACK;
+        hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_ack_payload));
+        struct buzz_ack_payload *pl = (struct buzz_ack_payload *)(buf + sizeof(*hdr));
+        pl->credits = sys_cpu_to_le16(credits);
+        reply_cb(buf, sizeof(*hdr) + sizeof(*pl));
+        buzz_proto_buf_free(&buf);
+    }
+}
+
+void buzz_proto_send_success_reusing_slab(buzz_transport_reply_fn reply_cb, uint8_t data_type, uint8_t *slab)
+{
+    if (!reply_cb || !slab)
+        return;
+    struct buzz_proto_header *hdr = (struct buzz_proto_header *)slab;
+    hdr->frame_type = BUZZ_FRAME_SUCCESS;
+    hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_resp_success));
+    struct buzz_resp_success *succ = (struct buzz_resp_success *)(slab + sizeof(*hdr));
+    succ->data_type = data_type;
+    reply_cb(slab, sizeof(*hdr) + sizeof(*succ));
+    buzz_proto_buf_free(&slab);
+}
+
+void buzz_proto_send_error_reusing_slab(buzz_transport_reply_fn reply_cb, uint16_t error_code, uint8_t *slab)
+{
+    if (!reply_cb || !slab)
+        return;
+    struct buzz_proto_header *hdr = (struct buzz_proto_header *)slab;
+    hdr->frame_type = BUZZ_FRAME_ERROR;
+    hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_resp_error));
+    struct buzz_resp_error *err = (struct buzz_resp_error *)(slab + sizeof(*hdr));
+    err->error_code = sys_cpu_to_le16(error_code);
+    reply_cb(slab, sizeof(*hdr) + sizeof(*err));
+    buzz_proto_buf_free(&slab);
+}
+
 static void handle_proto_version_request(struct buzz_frame_msg *msg)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
-
     hdr->frame_type = BUZZ_FRAME_RESPONSE;
 
     struct buzz_resp_proto_version *resp_data = (struct buzz_resp_proto_version *)(msg->data_ptr + sizeof(*hdr));
@@ -110,10 +173,18 @@ static void handle_proto_version_request(struct buzz_frame_msg *msg)
     resp_data->data_type = BUZZ_DATA_PROTO_INFO;
     resp_data->version = sys_cpu_to_le16(BUZZ_PROTO_VERSION);
 
-    resp_data->max_chunk_size = sys_cpu_to_le16(CONFIG_BUZZ_PROTO_SLAB_SIZE - sizeof(struct buzz_proto_header));
+    /* Dynamische Chunk-Grösse basierend auf der aktuellen Transport-MTU berechnen */
+    uint16_t slab_payload = CONFIG_BUZZ_PROTO_SLAB_SIZE - sizeof(struct buzz_proto_header);
+    uint16_t transport_payload = 0;
+    
+    if (msg->max_payload > sizeof(struct buzz_proto_header)) {
+        transport_payload = msg->max_payload - sizeof(struct buzz_proto_header);
+    }
+
+    uint16_t safe_chunk = MIN(slab_payload, transport_payload);
+    resp_data->max_chunk_size = sys_cpu_to_le16(safe_chunk);
 
     hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_resp_proto_version));
-
     uint16_t total_len = sizeof(struct buzz_proto_header) + sizeof(struct buzz_resp_proto_version);
 
     if (msg->reply_cb)
@@ -122,6 +193,34 @@ static void handle_proto_version_request(struct buzz_frame_msg *msg)
     }
 }
 
+void handle_device_info_request(struct buzz_frame_msg *msg) {
+    struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
+    hdr->frame_type = BUZZ_FRAME_RESPONSE;
+    struct buzz_resp_device_info *resp_data = (struct buzz_resp_device_info *)(msg->data_ptr + sizeof(*hdr));
+    resp_data->data_type = BUZZ_DATA_DEVICE_INFO;
+    if (fw_mgmt_get_id(resp_data->device_id, sizeof(resp_data->device_id)) < 0) {
+        LOG_ERR("Failed to get device ID");
+        send_error_frame(msg, EIO);
+        return;
+    }
+    const char *board_name = fw_mgmt_get_board_name();
+    const char *board_rev = fw_mgmt_get_board_revision();
+    const char *soc_name = fw_mgmt_get_soc_name();
+    resp_data->board_name_length = MIN(strlen(board_name), 32); // Sicherheitsmassnahme gegen zu lange Namen
+    resp_data->board_revision_length = MIN(strlen(board_rev), 32); // Sicherheitsmassnahme gegen zu lange Namen
+    resp_data->soc_name_length = MIN(strlen(soc_name), 32); // Sicherheitsmassnahme gegen zu lange Namen
+    memcpy(resp_data->data, board_name, resp_data->board_name_length);
+    memcpy(resp_data->data + resp_data->board_name_length, board_rev, resp_data->board_revision_length);
+    memcpy(resp_data->data + resp_data->board_name_length + resp_data->board_revision_length, soc_name, resp_data->soc_name_length);
+    uint16_t payload_length = sizeof(struct buzz_resp_device_info) + resp_data->board_name_length + resp_data->board_revision_length + resp_data->soc_name_length;
+    hdr->payload_length = sys_cpu_to_le16(payload_length);
+    uint16_t total_len = sizeof(struct buzz_proto_header) + payload_length;
+    if (msg->reply_cb)
+    {
+        msg->reply_cb(msg->data_ptr, total_len);
+    }
+}
+
 void handle_fs_info_request(struct buzz_frame_msg *msg)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
@@ -147,7 +246,7 @@ void handle_fs_info_request(struct buzz_frame_msg *msg)
     resp_data->data_type = BUZZ_DATA_FS_INFO;
     resp_data->total_size = sys_cpu_to_le32(total_size);
     resp_data->free_size = sys_cpu_to_le32(free_size);
-    resp_data->max_path_length = FS_MGMT_MAX_PATH_LENGTH;
+    resp_data->max_path_length = CONFIG_FS_MGMT_MAX_PATH_LENGTH;
     resp_data->sys_path_length = strlen(FS_SYSTEM_PATH);
     resp_data->audio_path_length = strlen(FS_AUDIO_PATH);
     memcpy(resp_data->data, FS_SYSTEM_PATH, resp_data->sys_path_length);
@@ -164,6 +263,36 @@ void handle_fs_info_request(struct buzz_frame_msg *msg)
     }
 }
 
+static void handle_fw_info_request(struct buzz_frame_msg *msg)
+{
+    struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
+
+    hdr->frame_type = BUZZ_FRAME_RESPONSE;
+
+    struct buzz_resp_fw_info *resp_data = (struct buzz_resp_fw_info *)(msg->data_ptr + sizeof(*hdr));
+
+    resp_data->data_type = BUZZ_DATA_FW_INFO;
+    resp_data->fw_status = fw_mgmt_get_fw_state();
+    resp_data->slot1_size = sys_cpu_to_le32(fw_mgmt_get_slot1_size());
+
+    const char *fw_version = fw_mgmt_get_fw_version_string();
+    const char *kernel_version = fw_mgmt_get_kernel_version_string();
+    resp_data->fw_version_length = MIN(strlen(fw_version), 32); // Sicherheitsmassnahme gegen zu lange Strings
+    resp_data->kernel_version_length = MIN(strlen(kernel_version), 32); // Sicherheitsmassnahme gegen zu lange Strings
+    memcpy(resp_data->data, fw_version, resp_data->fw_version_length);
+    memcpy(resp_data->data + resp_data->fw_version_length, kernel_version, resp_data->kernel_version_length);
+
+    uint16_t payload_length = sizeof(struct buzz_resp_fw_info) + resp_data->fw_version_length + resp_data->kernel_version_length;
+    hdr->payload_length = sys_cpu_to_le16(payload_length);
+
+    uint16_t total_len = sizeof(struct buzz_proto_header) + payload_length;
+
+    if (msg->reply_cb)
+    {
+        msg->reply_cb(msg->data_ptr, total_len);
+    }
+}
+
 static void handle_ls_request(struct buzz_frame_msg *msg)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
@@ -214,7 +343,7 @@ static void handle_ls_request(struct buzz_frame_msg *msg)
     }
 }
 
-static void handle_file_get_request(struct buzz_frame_msg *msg)
+static void handle_file_get_request(struct buzz_frame_msg *msg, bool only_tags)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
     uint16_t payload_len = sys_le16_to_cpu(hdr->payload_length);
@@ -237,7 +366,6 @@ static void handle_file_get_request(struct buzz_frame_msg *msg)
     memcpy(src_path, msg->data_ptr + sizeof(*hdr) + 1, path_len);
     src_path[path_len] = '\0';
 
-    // 1. Datei-Größe ermitteln
     struct fs_dirent entry;
     if (fs_mgmt_pm_stat(src_path, &entry) != 0)
     {
@@ -246,7 +374,6 @@ static void handle_file_get_request(struct buzz_frame_msg *msg)
         return;
     }
 
-    // 2. Datei öffnen
     fs_file_t_init(&get_file_state.file);
     int rc = fs_mgmt_pm_open(&get_file_state.file, src_path, FS_O_READ);
     if (rc != 0)
@@ -256,7 +383,31 @@ static void handle_file_get_request(struct buzz_frame_msg *msg)
         return;
     }
 
-    // 3. State initialisieren
+    uint32_t stream_size = entry.size;
+
+    if (only_tags)
+    {
+        ssize_t audio_len = fs_mgmt_get_audio_data_len(&get_file_state.file);
+        if (audio_len < 0)
+        {
+            LOG_ERR("Failed to get audio data len: %d", (int)audio_len);
+            fs_mgmt_pm_close(&get_file_state.file);
+            send_error_frame(msg, EIO);
+            return;
+        }
+
+        stream_size = entry.size - audio_len;
+
+        if (stream_size == 0)
+        {
+            fs_seek(&get_file_state.file, entry.size, FS_SEEK_SET);
+        }
+        else
+        {
+            fs_seek(&get_file_state.file, audio_len, FS_SEEK_SET);
+        }
+    }
+
     current_stream = STREAM_FILE_GET;
     get_file_state.active = true;
     get_file_state.credits = 0;
@@ -268,12 +419,11 @@ static void handle_file_get_request(struct buzz_frame_msg *msg)
 
     LOG_INF("Started FILE_GET stream for '%s' (%u bytes)", src_path, entry.size);
 
-    // 4. FILE_START Frame senden
     hdr->frame_type = BUZZ_FRAME_FILE_START;
     hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_file_start_payload));
 
     struct buzz_file_start_payload *start_pl = (struct buzz_file_start_payload *)(msg->data_ptr + sizeof(*hdr));
-    start_pl->total_size = sys_cpu_to_le32(entry.size);
+    start_pl->total_size = sys_cpu_to_le32(stream_size);
 
     if (msg->reply_cb)
     {
@@ -284,11 +434,120 @@ static void handle_file_get_request(struct buzz_frame_msg *msg)
             fs_mgmt_pm_close(&get_file_state.file);
             get_file_state.active = false;
             current_stream = STREAM_IDLE;
+            k_sleep(K_MSEC(10));
+            send_error_frame(msg, EIO);
             return;
         }
     }
 }
 
+static void process_rm_request(struct buzz_frame_msg *msg)
+{
+    struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
+    uint16_t payload_len = sys_le16_to_cpu(hdr->payload_length);
+    struct buzz_rm_file_payload *req = (struct buzz_rm_file_payload *)(msg->data_ptr + sizeof(*hdr));
+
+    if (payload_len < (sizeof(req->data_type) + sizeof(req->path_length)))
+    {
+        LOG_ERR("Invalid payload for RM_FILE request");
+        send_error_frame(msg, EINVAL);
+        return;
+    }
+
+    if ((sizeof(req->data_type) + sizeof(req->path_length) + req->path_length) != payload_len)
+    {
+        LOG_ERR("Path length in RM_FILE does not match payload length");
+        send_error_frame(msg, EINVAL);
+        return;
+    }
+
+    if (req->path_length >= sizeof(src_path))
+    {
+        LOG_ERR("Path too long for RM_FILE request");
+        send_error_frame(msg, ENAMETOOLONG);
+        return;
+    }
+
+    memcpy(src_path, req->path, req->path_length);
+    src_path[req->path_length] = '\0';
+
+    int rc = fs_mgmt_pm_unlink(src_path);
+    if (rc != 0)
+    {
+        LOG_ERR("Failed to remove file '%s': %d", src_path, rc);
+        send_error_frame(msg, abs(rc));
+        return;
+    }
+
+    LOG_INF("File '%s' removed successfully", src_path);
+
+    hdr->frame_type = BUZZ_FRAME_SUCCESS;
+    hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_resp_success));
+
+    struct buzz_resp_success *resp_data = (struct buzz_resp_success *)(msg->data_ptr + sizeof(*hdr));
+    resp_data->data_type = BUZZ_DATA_RM_FILE;
+
+    if (msg->reply_cb)
+    {
+        msg->reply_cb(msg->data_ptr, sizeof(*hdr) + sizeof(*resp_data));
+    }
+}
+
+static void process_move_request(struct buzz_frame_msg *msg)
+{
+    struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
+    uint16_t payload_len = sys_le16_to_cpu(hdr->payload_length);
+    struct buzz_rename_file_payload *req = (struct buzz_rename_file_payload *)(msg->data_ptr + sizeof(*hdr));
+
+    if (payload_len < (sizeof(req->data_type) + sizeof(req->old_path_length) + sizeof(req->new_path_length)))
+    {
+        LOG_ERR("Invalid payload for RENAME_FILE request");
+        send_error_frame(msg, EINVAL);
+        return;
+    }
+
+    if ((sizeof(req->data_type) + sizeof(req->old_path_length) + sizeof(req->new_path_length) + req->old_path_length + req->new_path_length) != payload_len)
+    {
+        LOG_ERR("Path lengths in RENAME_FILE do not match payload length");
+        send_error_frame(msg, EINVAL);
+        return;
+    }
+
+    if (req->old_path_length >= sizeof(src_path) || req->new_path_length >= sizeof(dst_path))
+    {
+        LOG_ERR("Source or destination path too long for RENAME_FILE request");
+        send_error_frame(msg, ENAMETOOLONG);
+        return;
+    }
+
+    memcpy(src_path, req->paths, req->old_path_length);
+    src_path[req->old_path_length] = '\0';
+
+    memcpy(dst_path, req->paths + req->old_path_length, req->new_path_length);
+    dst_path[req->new_path_length] = '\0';
+
+    int rc = fs_mgmt_pm_rename(src_path, dst_path);
+    if (rc != 0)
+    {
+        LOG_ERR("Failed to rename file from '%s' to '%s': %d", src_path, dst_path, rc);
+        send_error_frame(msg, abs(rc));
+        return;
+    }
+
+    LOG_INF("File renamed from '%s' to '%s' successfully", src_path, dst_path);
+
+    hdr->frame_type = BUZZ_FRAME_SUCCESS;
+    hdr->payload_length = sys_cpu_to_le16(sizeof(struct buzz_resp_success));
+
+    struct buzz_resp_success *resp_data = (struct buzz_resp_success *)(msg->data_ptr + sizeof(*hdr));
+    resp_data->data_type = BUZZ_DATA_RENAME_FILE;
+
+    if (msg->reply_cb)
+    {
+        msg->reply_cb(msg->data_ptr, sizeof(*hdr) + sizeof(*resp_data));
+    }
+}
+
 static void process_file_get_stream(void)
 {
     uint8_t *buf = NULL;
@@ -363,16 +622,20 @@ static void process_file_get_stream(void)
         return;
     }
 
-    // Daten gelesen -> CRC aktualisieren und Chunk senden
+    // Chunk senden; CRC/Offset erst nach erfolgreichem Enqueue aktualisieren
-    get_file_state.crc32 = crc32_ieee_update(get_file_state.crc32, payload_ptr, read_len);
-    get_file_state.offset += read_len;
-
     hdr->frame_type = BUZZ_FRAME_FILE_CHUNK;
     hdr->payload_length = sys_cpu_to_le16(read_len);
 
     if (get_file_state.reply_cb)
     {
         int send_rc = get_file_state.reply_cb(buf, sizeof(*hdr) + read_len);
+        if (send_rc == -ENOMEM)
+        {
+            // BLE TX queue voll - Datei zurücksetzen, nächster Zyklus wiederholt den Chunk
+            fs_seek(&get_file_state.file, -(off_t)read_len, FS_SEEK_CUR);
+            buzz_proto_buf_free(&buf);
+            return;
+        }
         if (send_rc)
         {
             LOG_ERR("Failed to send FILE_CHUNK (err %d)", send_rc);
@@ -380,10 +643,15 @@ static void process_file_get_stream(void)
             get_file_state.active = false;
             current_stream = STREAM_IDLE;
             buzz_proto_buf_free(&buf);
+            k_sleep(K_MSEC(10));
+            send_stream_error(get_file_state.reply_cb, EIO);
             return;
         }
     }
 
+    // Erfolgreich eingereiht: State aktualisieren
+    get_file_state.crc32 = crc32_ieee_update(get_file_state.crc32, payload_ptr, read_len);
+    get_file_state.offset += read_len;
     get_file_state.credits--;
     get_file_state.retry_counter = 0;
     buzz_proto_buf_free(&buf);
@@ -409,18 +677,116 @@ static void handle_request(struct buzz_frame_msg *msg)
         LOG_DBG("Received Proto Version Request");
         handle_proto_version_request(msg);
         break;
+
+    case BUZZ_DATA_DEVICE_INFO:
+        LOG_DBG("Received Device Info Request");
+        handle_device_info_request(msg);
+        break;
+
     case BUZZ_DATA_FS_INFO:
         LOG_DBG("Received FS Info Request");
         handle_fs_info_request(msg);
         break;
+
     case BUZZ_DATA_LS:
         LOG_DBG("Received LS Request");
         handle_ls_request(msg);
         break;
+
+    case BUZZ_DATA_FW_INFO:
+        LOG_DBG("Received FW Info Request");
+        handle_fw_info_request(msg);
+        break;
+
     case BUZZ_DATA_FILE_GET:
         LOG_DBG("Received FILE_GET Request");
-        handle_file_get_request(msg);
+        handle_file_get_request(msg, false);
         break;
+
+    case BUZZ_DATA_FILE_PUT:
+        LOG_DBG("Received FILE_PUT Request");
+        if (payload_len < sizeof(struct buzz_request_payload) + sizeof(uint32_t) + 1)
+        {
+            send_error_frame(msg, EINVAL);
+            return;
+        }
+
+        if (current_stream != STREAM_IDLE)
+        {
+            LOG_WRN("Stream active, rejecting FILE_PUT request");
+            send_error_frame(msg, EBUSY);
+            return;
+        }
+
+        struct fs_write_msg write_req = {
+            .op = FS_WRITE_OP_FILE_START,
+            .slab_ptr = msg->data_ptr,
+            .data_offset = sizeof(*hdr) + sizeof(struct buzz_request_payload) + sizeof(uint32_t),
+            .data_len = payload_len - sizeof(struct buzz_request_payload) - sizeof(uint32_t),
+            .metadata = sys_get_le32(msg->data_ptr + sizeof(*hdr) + sizeof(struct buzz_request_payload)),
+            .reply_cb = msg->reply_cb};
+
+        if (fs_mgmt_submit_write(&write_req) == 0)
+        {
+            current_stream = STREAM_FILE_PUT; /* WICHTIG: Status blockieren */
+            msg->data_ptr = NULL;             /* Ownership an FS-Thread übertragen */
+        }
+        else
+        {
+            send_error_frame(msg, EBUSY);
+        }
+        break;
+
+    case BUZZ_DATA_TAGS_PUT:
+        LOG_DBG("Received TAGS_PUT Request");
+        if (payload_len < sizeof(struct buzz_request_payload) + sizeof(uint32_t) + 1)
+        {
+            send_error_frame(msg, EINVAL);
+            return;
+        }
+
+        if (current_stream != STREAM_IDLE)
+        {
+            LOG_WRN("Stream active, rejecting TAGS_PUT request");
+            send_error_frame(msg, EBUSY);
+            return;
+        }
+
+        struct fs_write_msg tags_req = {
+            .op = FS_WRITE_OP_TAGS_START,
+            .slab_ptr = msg->data_ptr,
+            .data_offset = sizeof(*hdr) + sizeof(struct buzz_request_payload) + sizeof(uint32_t),
+            .data_len = payload_len - sizeof(struct buzz_request_payload) - sizeof(uint32_t),
+            .metadata = sys_get_le32(msg->data_ptr + sizeof(*hdr) + sizeof(struct buzz_request_payload)),
+            .reply_cb = msg->reply_cb
+        };
+
+        if (fs_mgmt_submit_write(&tags_req) == 0)
+        {
+            current_stream = STREAM_FILE_PUT; /* Blockiert den Stream für weitere Requests */
+            msg->data_ptr = NULL;             
+        }
+        else
+        {
+            send_error_frame(msg, EBUSY);
+        }
+        break;
+
+    case BUZZ_DATA_TAGS_GET:
+        LOG_DBG("Received TAGS_GET Request");
+        handle_file_get_request(msg, true);
+        break;
+
+    case BUZZ_DATA_RM_FILE:
+        LOG_DBG("Received RM_FILE Request");
+        process_rm_request(msg);
+        break;
+
+    case BUZZ_DATA_RENAME_FILE:
+        LOG_DBG("Received RENAME_FILE Request");
+        process_move_request(msg);
+        break;
+
     default:
         LOG_WRN("Unknown request data_type: 0x%02x", req_data->data_type);
         send_error_frame(msg, EINVAL);
@@ -555,7 +921,64 @@ static void buzz_proto_thread_fn(void *p1, void *p2, void *p3)
                 break;
 
             case BUZZ_FRAME_FILE_CHUNK:
-                send_error_frame(&msg, ENOSYS);
+                if (current_stream != STREAM_FILE_PUT)
+                {
+                    send_error_frame(&msg, EBADMSG);
+                    buzz_proto_buf_free(&msg.data_ptr);
+                    break;
+                }
+
+                struct fs_write_msg chunk_req = {
+                    .op = FS_WRITE_OP_FILE_CHUNK,
+                    .slab_ptr = msg.data_ptr,
+                    .data_offset = sizeof(*hdr),
+                    .data_len = sys_le16_to_cpu(hdr->payload_length),
+                    .reply_cb = msg.reply_cb};
+
+                if (fs_mgmt_submit_write(&chunk_req) == 0)
+                {
+                    msg.data_ptr = NULL;
+                }
+                else
+                {
+                    send_error_frame(&msg, EBUSY);
+                }
+                buzz_proto_buf_free(&msg.data_ptr); /* Tut nichts, wenn msg.data_ptr == NULL */
+                break;
+
+            case BUZZ_FRAME_FILE_END:
+                if (current_stream != STREAM_FILE_PUT)
+                {
+                    send_error_frame(&msg, EBADMSG);
+                    buzz_proto_buf_free(&msg.data_ptr);
+                    break;
+                }
+
+                if (msg.length >= sizeof(*hdr) + sizeof(struct buzz_file_end_payload))
+                {
+                    struct buzz_file_end_payload *end_pl = (struct buzz_file_end_payload *)(msg.data_ptr + sizeof(*hdr));
+                    struct fs_write_msg end_req = {
+                        .op = FS_WRITE_OP_FILE_END,
+                        .slab_ptr = msg.data_ptr,
+                        .data_offset = 0,
+                        .data_len = 0,
+                        .metadata = sys_le32_to_cpu(end_pl->crc32),
+                        .reply_cb = msg.reply_cb};
+
+                    if (fs_mgmt_submit_write(&end_req) == 0)
+                    {
+                        msg.data_ptr = NULL;
+                        current_stream = STREAM_IDLE; /* Stream wieder freigeben */
+                    }
+                    else
+                    {
+                        send_error_frame(&msg, EBUSY);
+                    }
+                }
+                else
+                {
+                    send_error_frame(&msg, EINVAL);
+                }
                 buzz_proto_buf_free(&msg.data_ptr);
                 break;
 
@@ -590,6 +1013,7 @@ static void buzz_proto_thread_fn(void *p1, void *p2, void *p3)
                 {
                     LOG_WRN("LS timeout waiting for ACK");
                     fs_mgmt_pm_closedir(&ls_state.dir);
+                    send_stream_error(ls_state.reply_cb, ETIMEDOUT);
                     ls_state.active = false;
                     current_stream = STREAM_IDLE;
                 }
@@ -608,6 +1032,7 @@ static void buzz_proto_thread_fn(void *p1, void *p2, void *p3)
                 {
                     LOG_WRN("FILE_GET timeout waiting for ACK");
                     fs_close(&get_file_state.file);
+                    send_stream_error(get_file_state.reply_cb, ETIMEDOUT);
                     get_file_state.active = false;
                     current_stream = STREAM_IDLE;
                 }

firmware/libs/event_mgmt/CMakeLists.txt

@@ -0,0 +1,5 @@
+if(CONFIG_EVENT_MGMT)
+  zephyr_library()
+  zephyr_library_sources(src/event_mgmt.c)
+  zephyr_include_directories(include)
+endif()

firmware/libs/event_mgmt/Kconfig

@@ -0,0 +1,10 @@
+menuconfig EVENT_MGMT
+    bool "Event management"
+    default y
+    select EVENTS
+
+if EVENT_MGMT        
+    module = EVENT_MGMT
+    module-str = event_mgmt
+    source "subsys/logging/Kconfig.template.log_config"
+endif # EVENT_MGMT

firmware/libs/event_mgmt/include/event_mgmt.h

@@ -0,0 +1,29 @@
+#ifndef EVENT_MGMT_H
+#define EVENT_MGMT_H
+
+#include <zephyr/kernel.h>
+
+#define EVENT_MGMT_FS_READY BIT(0)
+#define EVENT_MGMT_AUDIO_READY BIT(1)
+#define EVENT_MGMT_BLE_CONNECTED BIT(2)
+#define EVENT_MGMT_BLE_DISCONNECTED BIT(3)
+
+extern struct k_event event_mgmt_events;
+
+static inline int event_mgmt_wait_for(uint32_t events, k_timeout_t timeout)
+{
+    uint32_t got = k_event_wait(&event_mgmt_events, events, false, timeout);
+    return (got & events) == events ? 0 : -ETIMEDOUT;
+}
+
+static inline void event_mgmt_set_event(uint32_t event)
+{
+    k_event_post(&event_mgmt_events, event);
+}
+
+static inline void event_mgmt_clear_event(uint32_t event)
+{
+    k_event_clear(&event_mgmt_events, event);
+}
+
+#endif /* EVENT_MGMT_H */

firmware/libs/event_mgmt/src/event_mgmt.c

@@ -0,0 +1,3 @@
+#include "event_mgmt.h"
+
+K_EVENT_DEFINE(event_mgmt_events);

firmware/libs/fs_mgmt/Kconfig

@@ -1,5 +1,6 @@
 menuconfig FS_MGMT
     bool "File System Management"
+    default y
     select FLASH
     select FLASH_MAP
     select FILE_SYSTEM
@@ -11,12 +12,41 @@ menuconfig FS_MGMT
       Library for initializing and managing the file system.
 
 if FS_MGMT
+    config FS_MGMT_MAX_PATH_LENGTH
+        int "Maximum File Path Length"
+        default 32
+        help
+            Set the maximum length for file paths in the file system. Default is 32 characters.
     config FS_MGMT_MOUNT_POINT
         string "Littlefs Mount Point"
         default "/lfs"
         help
           Set the mount point for the Littlefs file system. Default is "/lfs".
             
+    config FS_MGMT_AUDIO_SUBDIR
+        string "Audio File Path"
+        default "/a"
+        help
+          Set the path for the audio file within the file system. Default is "/a".
+
+    config FS_MGMT_SYSTEM_SUBDIR
+        string "System File Path"
+        default "/sys"
+        help
+          Set the path for the system file within the file system. Default is "/sys".
+
+    config FS_MGMT_THREAD_STACK_SIZE
+        int "File System Management Thread Stack Size"
+        default 2048
+        help
+          Set the stack size for the file system management thread. Default is 2048 bytes.
+
+    config FS_MGMT_THREAD_PRIORITY
+        int "File System Management Thread Priority"
+        default 6
+        help
+          Set the priority for the file system management thread. Default is 6.
+
     if SOC_SERIES_NRF52X
         config PM_PARTITION_REGION_LITTLEFS_EXTERNAL
             default y

firmware/libs/fs_mgmt/include/fs_mgmt.h

@@ -2,25 +2,52 @@
 #define FS_MGMT_H
 
 #include <zephyr/fs/fs.h>
+#include "buzz_proto.h"
 
-#define FS_MGMT_MAX_PATH_LENGTH 32
+#define FS_AUDIO_PATH CONFIG_FS_MGMT_MOUNT_POINT CONFIG_FS_MGMT_AUDIO_SUBDIR
-#define FS_AUDIO_PATH CONFIG_FS_MGMT_MOUNT_POINT "/a"
+#define FS_SYSTEM_PATH CONFIG_FS_MGMT_MOUNT_POINT CONFIG_FS_MGMT_SYSTEM_SUBDIR
-#define FS_SYSTEM_PATH CONFIG_FS_MGMT_MOUNT_POINT "/sys"
+
+#define MAX_FILE_NAME_LEN(target, path) \
+    ((int)(sizeof(target) - (sizeof(path)) - 1))
+
+/** @brief Assemble a full path from a base path and a filename
+ * Ensures that the resulting path fits into the target buffer and is null-terminated. If the filename is too long, it will be truncated to fit.
+ * @param buffer Target buffer to hold the assembled path
+ * @param path Base path (e.g. "/sys" or "/audio")
+ * @param filename Name of the file to append to the base path
+ */
+#define FS_MGMT_ASSEMBLE_PATH(buffer, path, filename) \
+    snprintf(buffer, sizeof(buffer),                  \
+             "%s/%.*s",                               \
+             path,                                    \
+             MAX_FILE_NAME_LEN(buffer, path),         \
+             filename)
 
 /**
- * @brief Initializes the filesystem management module.
+ * @brief OP-Codes for the FS write thread
  */
-int fs_mgmt_init(void);
+enum fs_write_op
+{
+    FS_WRITE_OP_FILE_START,
+    FS_WRITE_OP_FILE_CHUNK,
+    FS_WRITE_OP_FILE_END,
+    FS_WRITE_OP_TAGS_START, // Schon mal vorgesehen
+    FS_WRITE_OP_FW_START,   // Schon mal vorgesehen
+    FS_WRITE_OP_ABORT
+};
 
-// /**
+/**
-//  * @brief Puts the QSPI flash into deep sleep mode to save power
+ * @brief Structure representing a write message for the FS write thread
-//  */
+ */
-// int fs_pm_flash_suspend(void);
+struct fs_write_msg
-
+{
-// /**
+    enum fs_write_op op;
-//  * @brief Resumes the QSPI flash from deep sleep mode
+    uint8_t *slab_ptr;                /* Basis-Pointer des Memory-Slabs (für k_mem_slab_free) */
-//  */
+    uint16_t data_offset;             /* Offset ab dem slab_ptr, wo die Nutzdaten beginnen */
-// int fs_pm_flash_resume(void);
+    uint16_t data_len;                /* Länge der Nutzdaten */
+    uint32_t metadata;                /* Zusatzinfo (Start: erwartete Dateigröße, End: erwartete CRC32) */
+    buzz_transport_reply_fn reply_cb; /* Callback für ACKs / Success / Error */
+};
 
 /**
  * @brief Wrapper around fs_open that handles power management for the flash
@@ -114,4 +141,18 @@ int fs_mgmt_pm_mkdir_recursive(char *path);
  */
 int fs_mgmt_pm_rm_recursive(char *path, size_t max_len);
 
+/**
+ * @brief Gets the length of the audio data in a file, accounting for any metadata tags, ensuring the flash is active during the operation
+ * @param fp Pointer to an open fs_file_t structure representing the file
+ * @return Length of the audio data on success, negative error code on failure
+ */
+ssize_t fs_mgmt_get_audio_data_len(struct fs_file_t *fp);
+
+/**
+ * @brief Submits a write message to the FS write thread, which will handle writing data to the filestem asynchronously, ensuring the flash is active during the operation
+ * @param msg Pointer to the fs_write_msg structure containing the write operation details
+ * @return 0 on success, negative error code on failure
+ */
+int fs_mgmt_submit_write(struct fs_write_msg *msg);
+
 #endif /* FS_MGMT_H */

firmware/libs/fs_mgmt/src/fs_mgmt.c

@@ -1,9 +1,13 @@
 #include <zephyr/fs/littlefs.h>
 #include <zephyr/fs/fs.h>
+#include <zephyr/sys/byteorder.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/pm/device.h>
+#include <zephyr/sys/crc.h>
 
 #include "fs_mgmt.h"
+#include "buzz_proto.h"
+#include "event_mgmt.h"
 
 LOG_MODULE_REGISTER(fs_mgmt, CONFIG_FS_MGMT_LOG_LEVEL);
 
@@ -13,6 +17,9 @@ FS_LITTLEFS_DECLARE_DEFAULT_CONFIG(fs_storage_data);
 #define QSPI_FLASH_NODE DT_ALIAS(qspi_flash)
 static const struct device *flash_dev = DEVICE_DT_GET(QSPI_FLASH_NODE);
 
+#define TAG_MAGIC "TAG!"
+#define TAG_FORMAT_VERSION 1U
+
 static struct fs_mount_t fs_storage_mnt = {
     .type = FS_LITTLEFS,
     .fs_data = &fs_storage_data,
@@ -23,6 +30,37 @@ static struct fs_mount_t fs_storage_mnt = {
 static int open_count = 0;
 static struct k_mutex flash_pm_lock;
 
+// #define ACK_WATERMARK (CONFIG_BUZZ_PROTO_SLAB_COUNT / 4)
+#define INITIAL_CREDITS CONFIG_BUZZ_PROTO_SLAB_COUNT
+#define ACK_WATERMARK (MAX(2, MIN(8, CONFIG_BUZZ_PROTO_SLAB_COUNT / 4)))
+
+typedef struct __attribute__((packed))
+{
+    uint16_t total_size;
+    uint16_t version;
+    uint8_t magic[4];
+} tag_footer_t;
+
+K_MSGQ_DEFINE(fs_write_msgq, sizeof(struct fs_write_msg), CONFIG_BUZZ_PROTO_SLAB_COUNT, 4);
+
+typedef enum
+{
+    FS_STATE_IDLE,
+    FS_STATE_RECEIVING_FILE,
+    FS_STATE_RECEIVING_TAGS,
+    FS_STATE_RECEIVING_FIRMWARE
+} fs_thread_state_t;
+
+static struct
+{
+    fs_thread_state_t state;
+    struct fs_file_t file;
+    char filename[CONFIG_FS_MGMT_MAX_PATH_LENGTH];
+    uint32_t crc32;
+    uint16_t unacked_chunks;
+    off_t audio_len; // Offeset für Tags
+} write_ctx;
+
 /**
  * @brief Puts the QSPI flash into deep sleep mode to save power
  *       Decrements the open count and suspends the flash if no more users are active
@@ -349,11 +387,12 @@ int fs_mgmt_pm_mkdir_recursive(char *path)
     return rc;
 }
 
-int fs_mgmt_init(void)
+static int fs_mgmt_init(void)
 {
     k_mutex_init(&flash_pm_lock);
 
-    if (!device_is_ready(flash_dev)) {
+    if (!device_is_ready(flash_dev))
+    {
         LOG_ERR("Flash device not ready!");
         return -ENODEV;
     }
@@ -367,7 +406,349 @@ int fs_mgmt_init(void)
         LOG_ERR("Error mounting filesystem: %d", rc);
         return rc;
     }
+
     fs_mgmt_pm_flash_suspend();
     LOG_DBG("Filesystem mounted successfully");
+    event_mgmt_set_event(EVENT_MGMT_FS_READY);
     return 0;
 }
+
+/* * APPLICATION Level sorgt dafür, dass die Treiber (Flash/QSPI) 
+ * bereits bereit sind. 
+ * CONFIG_APPLICATION_INIT_PRIORITY ist ein guter Standardwert (meist 90).
+ */
+SYS_INIT(fs_mgmt_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);
+
+static int fs_get_tag_bounds(struct fs_file_t *fp, off_t file_size,
+                             size_t *audio_limit, size_t *payload_len, bool *has_tag)
+{
+    tag_footer_t footer;
+
+    if (audio_limit == NULL || payload_len == NULL || has_tag == NULL)
+    {
+        return -EINVAL;
+    }
+
+    *has_tag = false;
+    *audio_limit = (size_t)file_size;
+    *payload_len = 0U;
+
+    if (file_size < (off_t)sizeof(tag_footer_t))
+    {
+        return 0;
+    }
+
+    fs_seek(fp, -(off_t)sizeof(tag_footer_t), FS_SEEK_END);
+    if (fs_read(fp, &footer, sizeof(tag_footer_t)) != sizeof(tag_footer_t))
+    {
+        fs_seek(fp, 0, FS_SEEK_SET);
+        return -EIO;
+    }
+
+    if (memcmp(footer.magic, TAG_MAGIC, 4) != 0)
+    {
+        fs_seek(fp, 0, FS_SEEK_SET);
+        return 0;
+    }
+
+    uint16_t tag_version = sys_le16_to_cpu(footer.version);
+    uint16_t tag_len = sys_le16_to_cpu(footer.total_size);
+
+    if (tag_version != TAG_FORMAT_VERSION)
+    {
+        fs_seek(fp, 0, FS_SEEK_SET);
+        return -ENOTSUP;
+    }
+
+    if (tag_len > (uint16_t)file_size || tag_len < sizeof(tag_footer_t))
+    {
+        fs_seek(fp, 0, FS_SEEK_SET);
+        return -EBADMSG;
+    }
+
+    *has_tag = true;
+    *audio_limit = (size_t)file_size - tag_len;
+    *payload_len = tag_len - sizeof(tag_footer_t);
+
+    fs_seek(fp, 0, FS_SEEK_SET);
+    return 0;
+}
+
+ssize_t fs_mgmt_get_audio_data_len(struct fs_file_t *fp)
+{
+    off_t file_size;
+    size_t audio_limit = 0U;
+    size_t payload_len = 0U;
+    bool has_tag = false;
+
+    fs_seek(fp, 0, FS_SEEK_END);
+    file_size = fs_tell(fp);
+
+    if (file_size < 0)
+    {
+        fs_seek(fp, 0, FS_SEEK_SET);
+        return -EIO;
+    }
+
+    if (fs_get_tag_bounds(fp, file_size, &audio_limit, &payload_len, &has_tag) < 0)
+    {
+        fs_seek(fp, 0, FS_SEEK_SET);
+        return -EIO;
+    }
+
+    fs_seek(fp, 0, FS_SEEK_SET);
+    return has_tag ? (ssize_t)audio_limit : file_size;
+}
+
+int fs_mgmt_submit_write(struct fs_write_msg *msg)
+{
+    return k_msgq_put(&fs_write_msgq, msg, K_NO_WAIT);
+}
+
+static void fs_thread_entry(void *p1, void *p2, void *p3)
+{
+    LOG_INF("FS Write Thread started");
+    write_ctx.state = FS_STATE_IDLE;
+    fs_file_t_init(&write_ctx.file);
+    struct fs_write_msg msg;
+
+    while (1)
+    {
+        /* Watchdog nur bei aktiven Transfers */
+        k_timeout_t wait_time = (write_ctx.state == FS_STATE_IDLE) ? K_FOREVER : K_SECONDS(2);
+        int rc = k_msgq_get(&fs_write_msgq, &msg, wait_time);
+
+        if (rc == -EAGAIN)
+        {
+            LOG_WRN("Write timeout! Aborting transfer.");
+            if (write_ctx.state == FS_STATE_RECEIVING_FILE)
+            {
+                fs_mgmt_pm_close(&write_ctx.file);
+                fs_mgmt_pm_unlink(write_ctx.filename);
+            }
+            write_ctx.state = FS_STATE_IDLE;
+            continue;
+        }
+
+        switch (write_ctx.state)
+        {
+        case FS_STATE_IDLE:
+            if (msg.op == FS_WRITE_OP_FILE_START)
+            {
+                if (msg.data_len >= sizeof(write_ctx.filename))
+                {
+                    LOG_ERR("Filename too long");
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, ENAMETOOLONG, msg.slab_ptr);
+                    break;
+                }
+
+                memcpy(write_ctx.filename, msg.slab_ptr + msg.data_offset, msg.data_len);
+                write_ctx.filename[msg.data_len] = '\0';
+
+                fs_mgmt_pm_unlink(write_ctx.filename);
+                rc = fs_mgmt_pm_open(&write_ctx.file, write_ctx.filename, FS_O_CREATE | FS_O_WRITE);
+
+                if (rc == 0)
+                {
+                    write_ctx.state = FS_STATE_RECEIVING_FILE;
+                    write_ctx.crc32 = 0;
+                    write_ctx.unacked_chunks = 0;
+                    LOG_INF("File transfer started: %s (Expected: %u bytes)", write_ctx.filename, msg.metadata);
+
+                    uint16_t credits = MIN(INITIAL_CREDITS, buzz_proto_get_free_rx_slabs());
+                    buzz_proto_buf_free(&msg.slab_ptr);
+                    buzz_proto_send_ack(msg.reply_cb, credits);
+                }
+                else
+                {
+                    LOG_ERR("Failed to open %s: %d", write_ctx.filename, rc);
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, abs(rc), msg.slab_ptr);
+                }
+            } /* Innerhalb von case FS_STATE_IDLE: */
+            else if (msg.op == FS_WRITE_OP_TAGS_START)
+            {
+                if (msg.data_len >= sizeof(write_ctx.filename))
+                {
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, ENAMETOOLONG, msg.slab_ptr);
+                    break;
+                }
+
+                memcpy(write_ctx.filename, msg.slab_ptr + msg.data_offset, msg.data_len);
+                write_ctx.filename[msg.data_len] = '\0';
+
+                /* Datei öffnen: Nur Lese- und Schreibrechte, Datei muss bereits existieren */
+                int rc = fs_mgmt_pm_open(&write_ctx.file, write_ctx.filename, FS_O_READ | FS_O_WRITE);
+
+                if (rc == 0)
+                {
+                    ssize_t audio_len = fs_mgmt_get_audio_data_len(&write_ctx.file);
+                    if (audio_len < 0)
+                    {
+                        LOG_ERR("Failed to get audio length: %d", (int)audio_len);
+                        fs_mgmt_pm_close(&write_ctx.file);
+                        buzz_proto_send_error_reusing_slab(msg.reply_cb, EIO, msg.slab_ptr);
+                        break;
+                    }
+
+                    /* Datei ab dem Ende der Audiodaten abschneiden (alte Tags entfernen) */
+                    rc = fs_truncate(&write_ctx.file, audio_len);
+                    if (rc != 0)
+                    {
+                        LOG_ERR("Failed to truncate file: %d", rc);
+                        fs_mgmt_pm_close(&write_ctx.file);
+                        buzz_proto_send_error_reusing_slab(msg.reply_cb, abs(rc), msg.slab_ptr);
+                        break;
+                    }
+
+                    /* File-Pointer exakt an das neue Ende (audio_len) setzen */
+                    fs_seek(&write_ctx.file, audio_len, FS_SEEK_SET);
+
+                    write_ctx.state = FS_STATE_RECEIVING_TAGS;
+                    write_ctx.crc32 = 0;
+                    write_ctx.unacked_chunks = 0;
+                    write_ctx.audio_len = audio_len;
+
+                    LOG_INF("Tags transfer started: %s (Expected tags: %u bytes)", write_ctx.filename, msg.metadata);
+
+                    uint16_t credits = buzz_proto_get_free_rx_slabs();
+                    buzz_proto_buf_free(&msg.slab_ptr);
+                    buzz_proto_send_ack(msg.reply_cb, credits);
+                }
+                else
+                {
+                    LOG_ERR("Failed to open %s for tags: %d", write_ctx.filename, rc);
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, abs(rc), msg.slab_ptr);
+                }
+            }
+            else if (msg.op == FS_WRITE_OP_FW_START)
+            {
+                LOG_WRN("Operation not yet fully implemented in FS state machine");
+                buzz_proto_send_error_reusing_slab(msg.reply_cb, ENOSYS, msg.slab_ptr);
+            }
+            break;
+
+        case FS_STATE_RECEIVING_FILE:
+            if (msg.op == FS_WRITE_OP_FILE_CHUNK && msg.slab_ptr)
+            {
+                ssize_t written = fs_write(&write_ctx.file, msg.slab_ptr + msg.data_offset, msg.data_len);
+                if (written == msg.data_len)
+                {
+                    write_ctx.crc32 = crc32_ieee_update(write_ctx.crc32, msg.slab_ptr + msg.data_offset, msg.data_len);
+                    buzz_proto_buf_free(&msg.slab_ptr);
+                    write_ctx.unacked_chunks++;
+                    if (write_ctx.unacked_chunks >= ACK_WATERMARK)
+                    {
+                        uint16_t free_slabs = buzz_proto_get_free_rx_slabs();
+                        uint16_t credits_to_send = MIN(free_slabs, write_ctx.unacked_chunks);
+                        if (credits_to_send > 0)
+                        {
+                            buzz_proto_send_ack(msg.reply_cb, credits_to_send);
+                            write_ctx.unacked_chunks -= credits_to_send;
+                        }
+                    }
+                }
+                else
+                {
+                    LOG_ERR("Flash write failed!");
+                    write_ctx.state = FS_STATE_IDLE;
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, EIO, msg.slab_ptr);
+                }
+            }
+            else if (msg.op == FS_WRITE_OP_FILE_END)
+            {
+                fs_mgmt_pm_close(&write_ctx.file);
+                write_ctx.state = FS_STATE_IDLE;
+
+                if (write_ctx.crc32 == msg.metadata)
+                {
+                    LOG_INF("File transfer finished. CRC valid: 0x%08X", write_ctx.crc32);
+                    buzz_proto_send_success_reusing_slab(msg.reply_cb, BUZZ_DATA_FILE_PUT, msg.slab_ptr);
+                }
+                else
+                {
+                    LOG_ERR("CRC Mismatch! Expected: 0x%08X, Got: 0x%08X", msg.metadata, write_ctx.crc32);
+                    fs_mgmt_pm_unlink(write_ctx.filename);
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, EBADMSG, msg.slab_ptr);
+                }
+            }
+            else if (msg.op == FS_WRITE_OP_ABORT)
+            {
+                fs_mgmt_pm_close(&write_ctx.file);
+                fs_mgmt_pm_unlink(write_ctx.filename);
+                write_ctx.state = FS_STATE_IDLE;
+                if (msg.slab_ptr)
+                    buzz_proto_buf_free(&msg.slab_ptr);
+            }
+            break;
+
+        case FS_STATE_RECEIVING_TAGS:
+            if (msg.op == FS_WRITE_OP_FILE_CHUNK && msg.slab_ptr)
+            {
+                ssize_t written = fs_write(&write_ctx.file, msg.slab_ptr + msg.data_offset, msg.data_len);
+                if (written == msg.data_len)
+                {
+                    write_ctx.crc32 = crc32_ieee_update(write_ctx.crc32, msg.slab_ptr + msg.data_offset, msg.data_len);
+                    buzz_proto_buf_free(&msg.slab_ptr);
+
+                    write_ctx.unacked_chunks++;
+                    if (write_ctx.unacked_chunks >= ACK_WATERMARK)
+                    {
+                        uint16_t free_slabs = buzz_proto_get_free_rx_slabs();
+                        uint16_t credits_to_send = MIN(free_slabs, write_ctx.unacked_chunks);
+                        if (credits_to_send > 0)
+                        {
+                            buzz_proto_send_ack(msg.reply_cb, credits_to_send);
+                            write_ctx.unacked_chunks -= credits_to_send;
+                        }
+                    }
+                }
+                else
+                {
+                    LOG_ERR("Flash write failed during tags transfer!");
+                    fs_truncate(&write_ctx.file, write_ctx.audio_len); /* Rollback */
+                    fs_mgmt_pm_close(&write_ctx.file);
+                    write_ctx.state = FS_STATE_IDLE;
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, EIO, msg.slab_ptr);
+                }
+            }
+            else if (msg.op == FS_WRITE_OP_FILE_END)
+            {
+                if (write_ctx.crc32 == msg.metadata)
+                {
+                    LOG_INF("Tags transfer finished. CRC valid: 0x%08X", write_ctx.crc32);
+                    fs_mgmt_pm_close(&write_ctx.file);
+                    buzz_proto_send_success_reusing_slab(msg.reply_cb, BUZZ_DATA_TAGS_PUT, msg.slab_ptr);
+                }
+                else
+                {
+                    LOG_ERR("Tags CRC Mismatch! Expected: 0x%08X, Got: 0x%08X", msg.metadata, write_ctx.crc32);
+                    fs_truncate(&write_ctx.file, write_ctx.audio_len); /* Rollback */
+                    fs_mgmt_pm_close(&write_ctx.file);
+                    buzz_proto_send_error_reusing_slab(msg.reply_cb, EBADMSG, msg.slab_ptr);
+                }
+                write_ctx.state = FS_STATE_IDLE;
+            }
+            else if (msg.op == FS_WRITE_OP_ABORT)
+            {
+                fs_truncate(&write_ctx.file, write_ctx.audio_len); /* Rollback */
+                fs_mgmt_pm_close(&write_ctx.file);
+                write_ctx.state = FS_STATE_IDLE;
+                if (msg.slab_ptr)
+                    buzz_proto_buf_free(&msg.slab_ptr);
+            }
+            break;
+
+        case FS_STATE_RECEIVING_FIRMWARE:
+            break;
+        }
+
+        /* Garbage Collection: Ungültige Operationen im falschen State abfangen */
+        if (write_ctx.state == FS_STATE_IDLE && msg.op == FS_WRITE_OP_FILE_CHUNK && msg.slab_ptr)
+        {
+            buzz_proto_buf_free(&msg.slab_ptr);
+        }
+    }
+}
+
+K_THREAD_DEFINE(fs_thread, CONFIG_FS_MGMT_THREAD_STACK_SIZE, fs_thread_entry,
+                NULL, NULL, NULL, CONFIG_FS_MGMT_THREAD_PRIORITY, 0, 0);

firmware/libs/fw_mgmt/CMakeLists.txt

@@ -0,0 +1,16 @@
+if(CONFIG_FW_MGMT)
+  zephyr_library()
+  zephyr_library_sources(src/fw_mgmt.c)
+  zephyr_include_directories(include)
+
+  if(CONFIG_MCUBOOT_IMG_MANAGER)
+    # img_mgmt.h pulls in <bootutil/image.h> and <zcbor_common.h>
+    if(DEFINED ZEPHYR_MCUBOOT_MODULE_DIR)
+      zephyr_include_directories(${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/bootutil/include)
+      zephyr_include_directories(${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/include)
+    endif()
+    if(DEFINED ZEPHYR_ZCBOR_MODULE_DIR)
+      zephyr_include_directories(${ZEPHYR_ZCBOR_MODULE_DIR}/include)
+    endif()
+  endif()
+endif()

firmware/libs/fw_mgmt/Kconfig

@@ -0,0 +1,23 @@
+menuconfig FW_MGMT
+    bool "Firmware Management"
+    default y
+    select FLASH
+    select FLASH_MAP
+    select STREAM_FLASH
+    select FLASH_PAGE_LAYOUT
+    select BOOTLOADER_MCUBOOT
+    select IMG_MANAGER
+    select MCUBOOT_IMG_MGR
+    select HWINFO
+
+    help
+      Library for firmware operations.
+
+if FW_MGMT
+    config MCUBOOT_UTIL_LOG_LEVEL_ERR
+    # config CONFIG_MCUMGR_GRP_IMG
+    #     default y
+    module = FW_MGMT
+    module-str = fw_mgmt
+    source "subsys/logging/Kconfig.template.log_config"
+endif # FW_MGMT

firmware/libs/fw_mgmt/include/fw_mgmt.h

@@ -0,0 +1,23 @@
+#ifndef FW_MGMT_H
+#define FW_MGMT_H
+
+#include <zephyr/kernel.h>
+
+typedef enum
+{
+    FW_STATE_CONFIRMED = 0x00,
+    FW_STATE_PENDING = 0x01,
+    FW_STATE_TESTING = 0x02,
+    FW_STATE_UNKNOWN = 0xFF
+} fw_state_t;
+
+const char *fw_mgmt_get_fw_version_string(void);
+const char *fw_mgmt_get_kernel_version_string(void);
+const char *fw_mgmt_get_board_name();
+const char *fw_mgmt_get_board_revision();
+const char *fw_mgmt_get_soc_name();
+int fw_mgmt_get_id(uint8_t *buffer, size_t length);
+ssize_t fw_mgmt_get_slot1_size(void);
+
+fw_state_t fw_mgmt_get_fw_state(void);
+#endif /* FW_MGMT_H */

firmware/libs/fw_mgmt/src/fw_mgmt.c

@@ -0,0 +1,79 @@
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/dfu/mcuboot.h>
+#include <zephyr/drivers/hwinfo.h>
+#include <zephyr/mgmt/mcumgr/grp/img_mgmt/img_mgmt.h>
+#include <version.h>
+#include <app_version.h>
+
+#include "fw_mgmt.h"
+
+#define SLOT1_PARTITION_SIZE DT_REG_SIZE(DT_NODELABEL(slot1_partition))
+
+static char fw_version_string[] = APP_VERSION_STRING;
+static char kernel_version_string[] = KERNEL_VERSION_STRING;
+static char board_name[] = CONFIG_BOARD;
+static char board_revision[] = CONFIG_BOARD_REVISION;
+static char soc_name[] = CONFIG_SOC;
+static uint8_t hwid[8];
+
+LOG_MODULE_REGISTER(fw_mgmt, CONFIG_FW_MGMT_LOG_LEVEL);
+
+const char* fw_mgmt_get_fw_version_string(void)
+{
+    return (const char*)fw_version_string;
+}
+
+const char* fw_mgmt_get_kernel_version_string(void)
+{
+    return (const char*)kernel_version_string;
+}
+
+const char* fw_mgmt_get_board_name(void)
+{
+    return (const char*)board_name;
+}
+
+const char* fw_mgmt_get_board_revision(void)
+{
+    return (const char*)board_revision;
+}
+
+const char* fw_mgmt_get_soc_name(void)
+{
+    return (const char*)soc_name;
+}
+
+int fw_mgmt_get_id(uint8_t *buffer, size_t length)
+{
+    int ret = hwinfo_get_device_id(hwid, length);
+    if (ret < 0) {
+        LOG_ERR("Failed to get device EUI64: %d", ret);
+        return ret;
+    }
+
+    memcpy(buffer, hwid, sizeof(hwid));
+    return ret;
+}
+
+fw_state_t fw_mgmt_get_fw_state(void)
+{
+    if (!boot_is_img_confirmed()) {
+        return FW_STATE_TESTING;
+    }
+     int swap_type = mcuboot_swap_type();
+    if (swap_type == BOOT_SWAP_TYPE_NONE) {
+        return FW_STATE_CONFIRMED;
+    } else if (swap_type == BOOT_SWAP_TYPE_TEST) {
+        return FW_STATE_PENDING;
+    } else {
+        LOG_ERR("Unexpected swap type: %d", swap_type);
+        return FW_STATE_UNKNOWN; // Fallback auf bestätigten Zustand bei unerwartetem Swap-Typ
+    }
+    return FW_STATE_UNKNOWN; // Fallback, sollte nie erreicht werden
+}
+
+ssize_t fw_mgmt_get_slot1_size(void)
+{
+    return SLOT1_PARTITION_SIZE;
+}

firmware/prj.conf

@@ -1,35 +1,21 @@
 ### Logging
 CONFIG_LOG=y
-
+CONFIG_AUDIO_LOG_LEVEL_DBG=y
-### File System
-CONFIG_FS_MGMT=y
-CONFIG_FS_MGMT_LOG_LEVEL_DBG=y
-CONFIG_FS_LOG_LEVEL_WRN=y
 
 ### Bluetooth
 CONFIG_BLE_MGMT=y
-# CONFIG_BLE_MGMT_LOG_LEVEL_DBG=y
 
-# Explicit throughput tuning in project config (wins over competing defaults)
+### Error handling
-CONFIG_BT_HCI_ACL_FLOW_CONTROL=y
+CONFIG_HW_STACK_PROTECTION=y
-CONFIG_BT_BUF_CMD_TX_COUNT=24
+CONFIG_RESET_ON_FATAL_ERROR=y
-CONFIG_BT_BUF_ACL_TX_COUNT=20
-CONFIG_BT_L2CAP_TX_BUF_COUNT=20
-CONFIG_BT_CONN_TX_MAX=20
-CONFIG_BT_CTLR_SDC_TX_PACKET_COUNT=20
-CONFIG_BT_CTLR_SDC_RX_PACKET_COUNT=20
 
-# Advertising 500ms - 1s
+### Power management
-CONFIG_BLE_MGMT_ADV_INT_MIN=160
-CONFIG_BLE_MGMT_ADV_INT_MAX=320
-
-## Buzzer protocol
-CONFIG_BUZZ_PROTO=y
-CONFIG_BUZZ_PROTO_LOG_LEVEL_DBG=y
-
-## Power management
 CONFIG_PM_DEVICE=y
 
-## Shell
+### Stack
-# CONFIG_SHELL=y
+CONFIG_MAIN_STACK_SIZE=2048
-# CONFIG_FILE_SYSTEM_SHELL=y
+CONFIG_INIT_STACKS=y
+CONFIG_THREAD_STACK_INFO=y
+CONFIG_STACK_SENTINEL=y
+
+# CONFIG_LOG_MODE_IMMEDIATE=y

firmware/src/main.c

@@ -3,18 +3,21 @@
 #include <string.h>
 
 #include "fs_mgmt.h"
-#include "ble_mgmt.h"
 #include "buzz_proto.h"
+#include "fw_mgmt.h"
+#include "audio.h"
 
 LOG_MODULE_REGISTER(main);
 
+#if IS_ENABLED(CONFIG_BLE_MGMT)
+#include "ble_mgmt.h"
 void ble_rx_cb(const uint8_t *data, uint16_t len)
 {
     uint8_t *buf;
     
     /* 1. Länge prüfen (darf SLAB_BLOCK_SIZE = 256 nicht überschreiten) */
-    if (len > 256) {
+    if (len > CONFIG_BUZZ_PROTO_SLAB_SIZE) {
-        LOG_ERR("Received data too large for proto buf (%u bytes)", len);
+        LOG_ERR("Received data too large for proto buf (%u > %u)", len, CONFIG_BUZZ_PROTO_SLAB_SIZE);
         return;
     }
 
@@ -41,26 +44,27 @@ void ble_rx_cb(const uint8_t *data, uint16_t len)
         buzz_proto_buf_free(&buf); /* Speicher bei Fehler sofort wieder freigeben */
     }
 }
+#endif
 
 int main(void)
 {
-    LOG_INF("Starting app on %s (SOC: %s)", CONFIG_BOARD, CONFIG_SOC);
+#if IS_ENABLED(CONFIG_BLE_MGMT)
-
-    int rc;
-    
-    rc = fs_mgmt_init();
-    if (rc < 0) {
-        LOG_ERR("Failed to initialize file system management: %d", rc);
-        return rc;
-    }
-
     /* BLE-Subsystem initialisieren und RX-Callback registrieren */
-    rc = ble_mgmt_init(ble_rx_cb, CONFIG_BLE_MGMT_DEFAULT_DEVICE_NAME);
+    int rc = ble_mgmt_init(ble_rx_cb, CONFIG_BLE_MGMT_DEFAULT_DEVICE_NAME);
     if (rc < 0) {
         LOG_ERR("Failed to initialize BLE management: %d", rc);
         return rc;
     }
+#endif
+
+    LOG_INF("Init complete. Starting audio playback test...");
+    
+    k_sleep(K_SECONDS(1));
+    audio_queue_play("/lfs/sys/update", false);
+    k_sleep(K_SECONDS(1));
+    audio_start_random_playback(); // Starte die Wiedergabe eines zufälligen Sounds
+    k_sleep(K_SECONDS(1));
+    audio_queue_play("/lfs/sys/404", true);
     
-    LOG_INF("Init complete");
     k_sleep(K_FOREVER);
 }

firmware/sysbuild.conf

@@ -0,0 +1 @@
+SB_CONFIG_BOOTLOADER_MCUBOOT=y

firmware/sysbuild/mcuboot.conf

@@ -0,0 +1,7 @@
+CONFIG_LOG=y
+# CONFIG_MCUBOOT_SERIAL=y
+CONFIG_UART_CONSOLE=y
+# CONFIG_SINGLE_APPLICATION_SLOT=n
+# CONFIG_MCUBOOT_INDICATION_LED=y
+# CONFIG_BOOT_SERIAL_CDC_ACM=y
+# CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x11000

firmware/sysbuild/mcuboot.overlay

@@ -0,0 +1,13 @@
+/ {
+  aliases {
+		mcuboot-button0 = &button0;
+		mcuboot-led0 = &led0;
+  };
+};
+
+/* Step 2.1 - Configure CDC ACM */
+&zephyr_udc0 {
+	cdc_acm_uart0: cdc_acm_uart0 {
+		compatible = "zephyr,cdc-acm-uart";
+	};
+};

protocol.md

@@ -1,313 +1,506 @@
 # Buzzer Protocol (Wire Specification)
 
-## 1. Zweck und Geltungsbereich
+Stand: 2026-03-18  
-Das Buzzer Protocol definiert ein transportunabhaengiges, binaeres Frame-Format fuer die Kommunikation zwischen Host und Device.
+Quelle: aktueller Implementierungsstand aus Firmware (`buzz_proto`, `fs_mgmt`, `ble_mgmt`) und Web-Client (`transport`, `parser`).
-Unterstuetzte Transporte sind aktuell BLE und USB CDC ACM/UART.
 
-Das Protokoll spezifiziert:
+## Ziel und Scope
-- Frame-Struktur (Header + Payload)
-- Frametypen
-- Datentypen fuer Request/Response
-- Semantik fuer Stream-Transfers (Verzeichnisliste, Datei, Firmware)
 
-## 2. Transport- und Codierungsregeln
+Das Buzzer Protocol ist ein binäres Frame-Protokoll für Host <-> Device Kommunikation.
-- Alle ganzzahligen Felder werden in Little Endian uebertragen.
-- Die im Header angegebene `payload_length` bezieht sich ausschliesslich auf die Nutzdaten ohne Header.
-- Bei UART kann optional eine Synchronisationssequenz `BUZZ` (`0x42 0x55 0x5A 0x5A`) vor einem Frame verwendet werden, um Framing nach Leitungsstoerungen zu resynchronisieren.
 
-## 3. Frame-Format
+Abgedeckte Funktionen:
+- Capability-Abfrage (`PROTO_INFO`)
+- Dateisystem-Info (`FS_INFO`)
+- Verzeichnisliste als Stream (`LS`)
+- Datei-/Tag-Download (`FILE_GET`, `TAGS_GET`)
+- Datei-/Tag-Upload (`FILE_PUT`, `TAGS_PUT`)
+- Datei löschen / umbenennen (`RM_FILE`, `RENAME_FILE`)
+
+Nicht produktiv implementiert:
+- `DEVICE_INFO` (`0x02`)
+- Firmware-Update (`FW_*`, `FW_UPDATE`)
+
+## Transport und Grundregeln
+
+- Alle Integer-Felder sind Little Endian.
+- Jedes Frame hat einen 3-Byte Header.
+- `payload_length` enthält nur die Payload-Länge (ohne Header).
+- Aktiver Produktiv-Transport ist BLE GATT (RX Write Without Response, TX Notify).
+- Es darf genau ein Stream gleichzeitig aktiv sein (`LS`, `FILE_GET`, `FILE_PUT`, `TAGS_*`).
+
+BLE Service UUIDs:
+- Service: `e517d988-bab5-4574-8479-97c6cb115ca0`
+- RX: `e517d988-bab5-4574-8479-97c6cb115ca1`
+- TX: `e517d988-bab5-4574-8479-97c6cb115ca2`
+
+## Frame-Format
+
+### Header
 
-### 3.1 Header (3 Byte)
 ```c
-uint8_t  frame_type
+uint8_t  frame_type;
-uint16_t payload_length   // Little Endian
+uint16_t payload_length; // LE
 ```
 
-### 3.2 Gesamtframe
+
-```
+### Paketstruktur
-+------------------+-------------------------+
+
-| Header (3 Byte)  | Payload (optional)      |
+```mermaid
-| frame_type (1B)  | payload_length Byte     |
+---
-| payload_len (2B) |                         |
+title: "Basic Packet Structure"
-+------------------+-------------------------+
+---
+packet
++8: "Frame type"
++16: "Payload length (LE)"
++40: "Payload (variable length)"
 ```
 
-## 4. Frametypen
+### Maximalgröße
 
-### 4.1 Steuer- und Anfrageframes
+Firmware-Buffer ist slab-basiert (`CONFIG_BUZZ_PROTO_SLAB_SIZE`).  
-| Wert   | Name       | Richtung       | Beschreibung                          |
+Der effektive Chunk für Transfers wird zusätzlich durch den Transport limitiert. Bei Bluetooth sind das zum Beispiel 3 Bytes:
-|--------|------------|----------------|---------------------------------------|
-| `0x00` | `REQUEST`  | Host → Device  | Abfrage eines Datentyps               |
-| `0x10` | `RESPONSE` | Device → Host  | Antwort auf `REQUEST`                 |
-| `0x11` | `ACK`      | Host → Device  | Flusskontrolle bei Stream-Transfers   |
-| `0x12` | `ERROR`    | Device → Host  | Fehlerantwort mit Fehlercode          |
 
-### 4.2 Datei-Transfer (reserviert, noch nicht implementiert)
+`PROTO_INFO.max_chunk_size` wird dynamisch berechnet als:
-| Wert   | Name         |
-|--------|--------------|
-| `0x20` | `FILE_START` |
-| `0x21` | `FILE_CHUNK` |
-| `0x22` | `FILE_END`   |
 
-### 4.3 Firmware-Transfer (reserviert, noch nicht implementiert)
+`min(slab_size - 3, transport_max_payload - 3)`
-| Wert   | Name       |
-|--------|------------|
-| `0x30` | `FW_START` |
-| `0x31` | `FW_CHUNK` |
-| `0x32` | `FW_END`   |
 
-### 4.4 Verzeichnisliste
+Das Protokoll ist so ausgelegt, dass es mit mindestens 100 Bytes auskommen sollte.
-| Wert   | Name       | Richtung       | Beschreibung                    |
-|--------|------------|----------------|---------------------------------|
-| `0x40` | `LS_START` | Device → Host  | Beginn des Listing-Streams      |
-| `0x41` | `LS_ENTRY` | Device → Host  | Ein Verzeichniseintrag          |
-| `0x42` | `LS_END`   | Device → Host  | Ende des Listing-Streams        |
 
-## 5. Request/Response-Schema
+## Frame-Typen
+
+| Wert | Name | Richtung | Bedeutung |
+|---|---|---|---|
+| `0x00` | `REQUEST` | Host -> Device | API-Aufruf per `data_type` |
+| `0x10` | `RESPONSE` | Device -> Host | Antwort auf `REQUEST` |
+| `0x11` | `ACK` | Host <-> Device | Credit-basierte Flusskontrolle |
+| `0x12` | `ERROR` | Device -> Host | Fehler mit errno-Code |
+| `0x13` | `SUCCESS` | Device -> Host | Erfolgreicher Abschluss |
+| `0x20` | `FILE_START` | Device -> Host | Start Download-Stream |
+| `0x21` | `FILE_CHUNK` | Host <-> Device | Datenblock (Upload/Download) |
+| `0x22` | `FILE_END` | Host <-> Device | Streamende mit CRC32 |
+| `0x30` | `FW_START` | reserviert | nicht aktiv |
+| `0x31` | `FW_CHUNK` | reserviert | aktuell `ENOSYS` |
+| `0x32` | `FW_END` | reserviert | nicht aktiv |
+| `0x40` | `LS_START` | Device -> Host | Start Verzeichnis-Stream |
+| `0x41` | `LS_ENTRY` | Device -> Host | Verzeichniseintrag |
+| `0x42` | `LS_END` | Device -> Host | Ende Verzeichnis-Stream |
+
+## Data-Typen (`REQUEST`)
+
+| Wert | Name | Status | Beschreibung |
+|---|---|---|---|
+| `0x01` | `PROTO_INFO` | aktiv | Protokollversion + max Chunkgröße |
+| `0x02` | `DEVICE_INFO` | aktiv | Device-Infos (Board, Revision, SOC, ID) |
+| `0x03` | `FS_INFO` | aktiv | Dateisystem- und Pfadinfos |
+| `0x04` | `FW_INFO` | aktiv | Info über Firmware-Status und -Version sowie Kernelversion |
+| `0x20` | `FILE_GET` | aktiv | Datei vom Device streamen |
+| `0x21` | `FILE_PUT` | aktiv | Datei zum Device hochladen |
+| `0x22` | `TAGS_GET` | aktiv | nur Tag-Bereich streamen |
+| `0x23` | `TAGS_PUT` | aktiv | nur Tag-Bereich schreiben |
+| `0x24` | `RM_FILE` | aktiv | Datei löschen |
+| `0x25` | `RENAME_FILE` | aktiv | Datei umbenennen |
+| `0x30` | `FW_UPDATE` | reserviert | aktuell nicht bedient |
+| `0x40` | `LS` | aktiv | Verzeichnisliste starten |
+
+## Request/Response-Formate
+
+### Generischer Request
 
-### 5.1 Request (`frame_type = 0x00`)
-Payload-Mindestformat:
 ```c
-uint8_t data_type   // Nutzt enum buzz_data_type
+uint8_t data_type;
-// optional: datentypspezifische Parameter
+// optional daten_typspezifische Parameter
 ```
 
-Wire-Format:
+Wire:
-```
+
-[0x00][payload_length LE][data_type][optional parameters]
+```text
+[0x00][payload_len LE][data_type][optional...]
 ```
 
-### 5.2 Response (`frame_type = 0x10`)
+```mermaid
-Payload-Mindestformat:
+---
-```c
+title: "Generic Requst Structure"
-uint8_t data_type   // Echo des angefragten data_type
+---
-// danach: datentypspezifische Response-Daten
+packet
++8: "Frame type REQUEST: 0x00"
++16: "Payload length (LE)"
++8: "Data type"
++32: "Optional payload (variable length)"
 ```
 
-Wire-Format:
+### `PROTO_INFO` (`0x01`)
-```
-[0x10][payload_length LE][data_type][response payload]
-```
 
-## 6. Datentypen (Request/Response)
+Request: keine Zusatzdaten.
-
-Definierte `data_type`-Werte:
-| Wert   | Name          | Beschreibung                         |
-|--------|---------------|--------------------------------------|
-| `0x01` | `PROTO_INFO`  | Protokollversion und Chunk-Groesse   |
-| `0x02` | `DEVICE_INFO` | Geraeteinformationen (TBD)           |
-| `0x03` | `FS_INFO`     | Dateisystem-Statistik und Pfadnamen  |
-| `0x40` | `LS`          | Verzeichnisliste starten             |
-
-### 6.1 `PROTO_INFO` (`0x01`)
-Request-Parameter: keine
 
 Response-Payload:
+
 ```c
 uint8_t  data_type;       // 0x01
-uint16_t version;         // Protokollversion (LE)
+uint16_t version;         // LE
-uint16_t max_chunk_size;  // max. Nutzdaten pro Frame ohne Header (LE)
+uint16_t max_chunk_size;  // LE
 ```
 
-Hinweis: `max_chunk_size` ergibt sich aus der internen Slab-Konfiguration (`CONFIG_BUZZ_PROTO_SLAB_SIZE - 3`).
+```mermaid
+---
+title: "PROTO_INFO response structure"
+---
+packet
++8: "Frame type RESPONSE: 0x10"
++16: "Payload length (LE): 5"
++8: "Data type PROTO_INFO: 0x01"
++16: "Protocol Version (LE)"
++16: "Max Chunk Size (LE)"
+```
 
-### 6.2 `DEVICE_INFO` (`0x02`)
+### `DEVICE_INFO` (`0x02`)
-TBD
 
-### 6.3 `FS_INFO` (`0x03`)
+Request: keine Zusatzdaten.
-Request-Parameter: keine
+
+Respone-Payload:
+
+```c
+uint8_t    data_type;  // 0x02
+uint8_t[8] device_id;
+uint8_t    board_len;
+uint8_t    rev_len;
+uint8_t    soc_len;
+uint8_t    data[];     // board, rev und soc, ohne Nullterminierung
+```
+
+***Hinweis:*** In der aktuellen implementierung werden die Strings auf eine maximale Länge von 32 Zeichen beschränkt. Dies sollte für alle Fälle genügen.
+
+### `FS_INFO` (`0x03`)
+
+Request: keine Zusatzdaten.
 
 Response-Payload:
+
 ```c
-uint8_t  data_type;          // 0x03
+uint8_t  data_type;         // 0x03
-uint32_t total_size;         // Gesamtgroesse Flash in Bytes (LE)
+uint32_t total_size;        // LE
-uint32_t free_size;          // Freier Speicher in Bytes (LE)
+uint32_t free_size;         // LE
-uint8_t  max_path_length;    // Maximal erlaubte Pfadlaenge
+uint8_t  max_path_length;
-uint8_t  sys_path_length;    // Laenge des System-Pfades (ohne 0-Terminator)
+uint8_t  sys_path_length;
-uint8_t  audio_path_length;  // Laenge des Audio-Pfades (ohne 0-Terminator)
+uint8_t  audio_path_length;
-uint8_t  data[];             // sys_path gefolgt von audio_path, nicht nullterminiert
+uint8_t  data[];            // sys_path + audio_path ohne Nullterminierung
 ```
 
-### 6.4 `LS` (`0x40`) — Verzeichnisliste anfordern
+Im `data` folgen sich System- und Audiopfad ohne Abstand, und ohne 0-Terminierung (`\0`). Beispiel für Systempfad `/lfs/sys`und Audiopfad `/lfs/a`:
-Startet einen LS-Stream fuer den angegebenen Pfad.
+
+`/lfs/sys/lfs/a`
+
+`sys_path_len` ist in diesem Beispiel 8 und `audio_path_len` ist 6.
+
+
+```mermaid
+---
+title: "FS_INFO response structure"
+---
+packet
++8: "Frame type RESPONSE: 0x10"
++16: "Payload length (LE): variable, 12 + sys path length + audio path length"
++8: "Data type FS_INFO: 0x03"
++32: "Total size (LE)"
++32: "Free size (LE)"
++8: "Max path length"
++8: "Sys path length"
++8: "Audio path length"
++40: "Sys path + Audio Path (variable)"
+```
+
+Beispielpaket mit **8 MiB Flash**, wovon **7 MiB frei** sind und den Pfaden `/lfs/sys` und `/lfs/a`. Die **maximale Pfadlänge** sind **32** Zeichen:
+
+```mermaid
+---
+title: "FS_INFO response example"
+---
+packet
++8: "Frame type RESPONSE: 0x10"
++16: "Payload length (LE): 26 (0x1A 0x00)"
++8: "Data type FS_INFO: 0x03"
++32: "Total size (LE): 8388608 (0x00 0x00 0x80 0x00)"
++32: "Free size (LE): 7340032 (0x00 0x00 0x70 0x00)"
++8: "Max path length: 32"
++8: "Sys path length: 8"
++8: "Audio path length: 6"
++112: "data: '/lfs/sys/lfs/a'"
+```
+
+Das Beispiel schaut in HEX so aus:
+```text
+0x10 0x1A 0x00 0x03 0x00 0x00 0x80 0x00 0x00 0x00 0x70 0x00 0x20 0x08 0x06
+0x2F 0x6C 0x66 0x73 0x2F 0x73 0x79 0x73 0x2F 0x6C 0x66 0x73 0x2F 0x61
+```
+
+### `FW_INFO` (`0x04`)
+
+Request: keine Zusatzdaten
+
+Response:
+
+```c
+uint8_t fw_status;           /* 0x00: Confirmed, 0x01: Pending, 0x02: Testing, 0xFF: Unbekannt */
+uint32_t slot1_size;         /* (LE) Grösse des Firmware Update Slots */
+uint8_t fw_version_len;      /* Länge des Firmware-Versionsstring */
+uint8_t kernel_version_len;  /* Länge des Kernel-Versionsstrings */
+uint8_t data[];              /* FW-Version und Kernelversion, ohne Nullterminierung */
+```
+
+***Hinweis:*** in der Aktuellen implementierung werden die Versionen auf 32 Zeichen limitiert.
+
+### `LS` (`0x40`)
 
 Request-Payload:
+
 ```c
-uint8_t  data_type;   // 0x40
+uint8_t data_type; // 0x40
-char     path[];      // Pfad ohne 0-Terminator, Laenge ergibt sich aus payload_length - 1
+char    path[];    // ohne Nullterminierung
 ```
 
-Wire-Format (Beispiel fuer Pfad `/a`):
+### `FILE_GET` (`0x20`) und `TAGS_GET` (`0x22`)
-```
-[0x00][0x03 0x00][0x40][0x2F 0x61]
-```
 
-Das Device antwortet mit dem LS-Stream (siehe Abschnitt 8).
+Request-Payload:
 
-## 7. ACK- und ERROR-Frames
-
-### 7.1 ACK (`frame_type = 0x11`) — Host → Device
-Wird waehrend eines laufenden LS-Streams gesendet, um dem Device Credits (Sendeerlaubnisse) zu erteilen.
-
-Format:
 ```c
-// Header:
+uint8_t data_type; // 0x20 oder 0x22
-uint8_t  frame_type;      // 0x11
+char    path[];    // ohne Nullterminierung
-uint16_t payload_length;  // 0x0002
-
-// Payload:
-uint16_t credits;         // Anzahl der Entries, die das Device senden darf (LE)
 ```
 
-Wire-Format (Beispiel: 64 Credits):
+Antwort ist ein Stream aus `FILE_START` -> `FILE_CHUNK`* -> `FILE_END`.
-```
-[0x11][0x02 0x00][0x40 0x00]
-```
 
-Semantik:
+### `FILE_PUT` (`0x21`) und `TAGS_PUT` (`0x23`)
-- Der Host sendet nach Empfang von `LS_START` initial Credits (typisch 64).
+
-- Das Device dekrementiert seinen internen Credit-Zaehler mit jeder gesendeten `LS_ENTRY`.
+Request-Payload:
-- Bei 0 Credits wartet das Device auf ein weiteres ACK (Timeout: 5 × 500 ms, danach Abbruch).
-- Der Host soll bei Bedarf weitere Credits nachsenden, bevor die bisherigen aufgebraucht sind.
 
-### 7.2 ERROR (`frame_type = 0x12`) — Device → Host
-Format:
 ```c
-// Header:
+uint8_t  data_type;   // 0x21 oder 0x23
-uint8_t  frame_type;      // 0x12
+uint32_t total_size;  // LE
-uint16_t payload_length;  // 0x0002
+char     path[];      // ohne Nullterminierung
-
-// Payload:
-uint16_t error_code;      // Positiver Zephyr-errno-Wert (LE)
 ```
 
-Wire-Format (Beispiel: ENOENT = 2):
+Danach sendet der Host:
-```
+- `FILE_CHUNK` Frames
-[0x12][0x02 0x00][0x02 0x00]
+- abschließend `FILE_END` mit CRC32
+
+### `RM_FILE` (`0x24`)
+
+Request-Payload:
+
+```c
+uint8_t data_type;    // 0x24
+uint8_t path_length;
+char    path[];       // ohne Nullterminierung
 ```
 
-ERROR kann jederzeit als Antwort auf einen REQUEST oder waehrend eines Streams gesendet werden.
+### `RENAME_FILE` (`0x25`)
-Ein ERROR-Frame waehrend eines aktiven LS-Streams beendet diesen implizit.
 
-Fehlercode-Tabelle (Zephyr errno, positiver Wert):
+Request-Payload:
-| Code | Zephyr-Name    | Bedeutung                                   |
-|------|----------------|---------------------------------------------|
-|  1   | `EPERM`        | Fehlende Berechtigung                       |
-|  2   | `ENOENT`       | Datei oder Verzeichnis nicht gefunden       |
-|  5   | `EIO`          | Ein-/Ausgabefehler auf dem Flash            |
-| 12   | `ENOMEM`       | Nicht genuegend Speicher frei               |
-| 16   | `EBUSY`        | Geraet oder Ressource belegt                |
-| 22   | `EINVAL`       | Ungültiges Argument oder Parameter          |
-| 24   | `EMFILE`       | Zu viele offene Dateien                     |
-| 28   | `ENOSPC`       | Kein freier Speicherplatz mehr              |
-| 36   | `ENAMETOOLONG` | Dateiname oder Pfad zu lang                 |
-| 88   | `ENOSYS`       | Funktion nicht implementiert                |
-| 134  | `ENOTSUP`      | Operation nicht unterstuetzt               |
 
-## 8. LS-Stream (Verzeichnisliste)
+```c
-
+uint8_t data_type;       // 0x25
-Der LS-Stream wird durch einen `REQUEST` mit `data_type = 0x40` ausgeloest und laeuft wie folgt ab:
+uint8_t old_path_length;
-
+uint8_t new_path_length;
-```
+char    paths[];         // old_path + new_path (jeweils ohne Nullterminierung)
-Host                              Device
- |                                   |
- |-- REQUEST (data_type=LS, path) -->|
- |                                   |  (oeffnet Verzeichnis)
- |<--------- LS_START (leer) --------|
- |                                   |
- |------ ACK (credits=64) ---------->|
- |                                   |
- |<-- LS_ENTRY (entry 1) ------------|
- |<-- LS_ENTRY (entry 2) ------------|
- |         ...                       |
- |<-- LS_ENTRY (entry 64) -----------|  (credits = 0, Device wartet)
- |                                   |
- |------ ACK (credits=64) ---------->|
- |                                   |
- |<-- LS_ENTRY (entry 65) -----------|
- |         ...                       |
- |<--------- LS_END -----------------|
 ```
 
-### 8.1 `LS_START` (`0x40`) — Device → Host
+## ACK / ERROR / SUCCESS
-Signalisiert den Beginn des Streams. Keine Payload.
 
-```
+### ACK (`0x11`)
-[0x40][0x00 0x00]
-```
-
-### 8.2 `LS_ENTRY` (`0x41`) — Device → Host
-Ein Eintrag pro Verzeichniselement.
 
 Payload:
+
 ```c
-uint8_t  type;         // 0x00 = Datei, 0x01 = Verzeichnis (buzz_fs_entry_type)
+uint16_t credits; // LE
-uint32_t size;         // Dateigroesse in Bytes (LE); bei Verzeichnissen 0
-uint8_t  name_length;  // Laenge des Namens (ohne 0-Terminator)
-char     name[];       // Datei-/Verzeichnisname, nicht nullterminiert
 ```
 
-`type`-Werte:
+Wichtig: Es gibt zwei Semantiken je nach Richtung.
-| Wert   | Bedeutung     |
-|--------|---------------|
-| `0x00` | Datei (FILE)  |
-| `0x01` | Verzeichnis (DIR) |
 
-### 8.3 `LS_END` (`0x42`) — Device → Host
+- Download (`LS`, `FILE_GET`, `TAGS_GET`):  
-Signalisiert das Ende des Streams.
+  Host -> Device, Credits werden im Device als absoluter neuer Stand gesetzt.
+- Upload (`FILE_PUT`, `TAGS_PUT`):  
+  Device -> Host, Credits sind zusätzlich gewährte Tokens (Host addiert sie).
+
+### ERROR (`0x12`)
 
 Payload:
+
 ```c
-uint32_t total_entries;  // Gesamtzahl gesendeter Eintraege (LE)
+uint16_t error_code; // positiver errno-Wert, LE
 ```
 
-Der Host kann `total_entries` mit der empfangenen Anzahl von `LS_ENTRY`-Frames vergleichen, um Vollstaendigkeit zu pruefen.
+Häufige Codes:
 
-### 8.4 Fehler- und Timeoutbehandlung
+| Code | Name | Bedeutung |
-- Tritt ein Fehler beim Lesen auf, sendet das Device einen `ERROR`-Frame und beendet den Stream.
+|---|---|---|
-- Empfaengt das Device 5 Mal in Folge keine Credits innerhalb von je 500 ms (2,5 s gesamt), bricht es den Stream intern ab (kein ERROR-Frame, Stream wird still verworfen).
+| `1` | `EPERM` | fehlende Rechte |
-- Der Host sollte einen eigenen Watchdog implementieren; empfohlener Timeout: 3 s ohne empfangenen Frame.
+| `2` | `ENOENT` | Datei/Ordner nicht gefunden |
+| `5` | `EIO` | Flash-I/O-Fehler |
+| `16` | `EBUSY` | Stream/Ressource belegt |
+| `22` | `EINVAL` | ungültige Nutzdaten |
+| `36` | `ENAMETOOLONG` | Pfad zu lang |
+| `71` | `EPROTO` | unzulässiger Frame-Typ |
+| `74` | `EBADMSG` | ungültiger Stream-Frame/CRC Fehler |
+| `88` | `ENOSYS` | nicht implementiert |
+| `90` | `EMSGSIZE` | max Payload ungültig |
+| `116` | `ETIMEDOUT` | Credit-/Stream-Timeout |
+| `134` | `ENOTSUP` | nicht unterstützt |
 
-## 9. Beispiele
+### SUCCESS (`0x13`)
 
-### 9.1 PROTO_INFO abfragen
+Payload:
+
+```c
+uint8_t data_type; // erfolgreich abgeschlossener Befehl
+```
+
+Wird derzeit u.a. für `FILE_PUT`, `TAGS_PUT`, `RM_FILE`, `RENAME_FILE` genutzt.
+
+## Verzeichnisliste (`LS`)
+
+```mermaid
+sequenceDiagram
+	participant Host
+	participant Device
+
+	Host->>Device: REQUEST(LS, path)
+	Device-->>Host: LS_START
+	Host->>Device: ACK(credits=64)
+
+	loop solange credits > 0
+		Device-->>Host: LS_ENTRY
+	end
+
+	alt Verzeichnis vollständig
+		Device-->>Host: LS_END(total_entries)
+	else keine Credits/Timeout
+		Device-->>Host: ERROR(ETIMEDOUT)
+	end
+```
+
+Hinweis zum aktuellen Web-Client (März 2026): Für `LS` wird initial `ACK(64)` gesendet, ein dynamisches Nachfüllen ist noch nicht implementiert. Große Verzeichnisse können deshalb in `ETIMEDOUT` laufen.
+
+## Datei-/Tag-Download (`FILE_GET`, `TAGS_GET`)
+
+```mermaid
+sequenceDiagram
+	participant Host
+	participant Device
+
+	Host->>Device: REQUEST(FILE_GET|TAGS_GET, path)
+	Device-->>Host: FILE_START(total_size)
+	Host->>Device: ACK(credits=128)
+
+	loop chunks
+		Device-->>Host: FILE_CHUNK(data)
+		Note over Host: Credits dekrementieren
+		alt Credits <= 64
+			Host->>Device: ACK(credits=128)
+		end
+	end
+
+	Device-->>Host: FILE_END(crc32)
+	Note over Host: CRC prüfen
+```
+
+## Datei-/Tag-Upload (`FILE_PUT`, `TAGS_PUT`)
+
+```mermaid
+sequenceDiagram
+	participant Host
+	participant Device
+
+	Host->>Device: REQUEST(FILE_PUT|TAGS_PUT, total_size, path)
+	Device-->>Host: ACK(initial credits)
+
+	loop solange Host-Credits > 0
+		Host->>Device: FILE_CHUNK(data)
+		Note over Device: schreibt Flash, zählt unacked_chunks
+		alt ACK_WATERMARK erreicht
+			Device-->>Host: ACK(additional credits)
+		end
+	end
+
+	Host->>Device: FILE_END(crc32)
+	alt CRC korrekt
+		Device-->>Host: SUCCESS(FILE_PUT|TAGS_PUT)
+	else CRC/Write Fehler
+		Device-->>Host: ERROR(EBADMSG/EIO/...)
+	end
+```
+
+## Payload-Frames im Detail
+
+### `LS_ENTRY` (`0x41`)
+
+```c
+uint8_t  type;         // 0x00 file, 0x01 dir
+uint32_t size;         // LE
+uint8_t  name_length;
+char     name[];       // ohne Nullterminierung
+```
+
+### `LS_END` (`0x42`)
+
+```c
+uint32_t total_entries; // LE
+```
+
+### `FILE_START` (`0x20`)
+
+```c
+uint32_t total_size; // LE
+```
+
+`FILE_GET`: komplette Dateigröße.  
+`TAGS_GET`: nur Tag-Teil der Datei.
+
+### `FILE_CHUNK` (`0x21`)
+
+Payload sind rohe Nutzdatenbytes.
+
+### `FILE_END` (`0x22`)
+
+```c
+uint32_t crc32; // LE, IEEE CRC32
+```
+
+## Beispiel-Frames (Hex)
+
+### `PROTO_INFO` Request/Response
 
 Request:
-```
+
+```text
 00 01 00 01
 ```
-- `00`: `REQUEST`
-- `01 00`: `payload_length = 1`
-- `01`: `data_type = PROTO_INFO`
 
-Response (Beispielwerte):
+Beispiel-Response:
-```
+
+```text
 10 05 00 01 01 00 FD 00
 ```
-- `10`: `RESPONSE`
-- `05 00`: `payload_length = 5`
-- `01`: `data_type = PROTO_INFO`
-- `01 00`: `version = 1`
-- `FD 00`: `max_chunk_size = 253`
 
-### 9.2 Verzeichnisliste `/a` anfordern
+Interpretation:
+- `10`: RESPONSE
+- `05 00`: Payload 5 Byte
+- `01`: PROTO_INFO
+- `01 00`: Version 1
+- `FD 00`: max_chunk_size = 253
 
-Request:
+### `LS` Request für `/a`
-```
+
+```text
 00 03 00 40 2F 61
 ```
-- `00`: `REQUEST`
-- `03 00`: `payload_length = 3`
-- `40`: `data_type = LS`
-- `2F 61`: Pfad `/a`
 
-Antwort (Sequenz):
+Interpretation:
-```
+- `00`: REQUEST
-40 00 00                          // LS_START, keine Payload
+- `03 00`: Payload 3 Byte
-// Host sendet ACK mit Credits
+- `40`: data_type LS
-11 02 00 40 00                    // ACK, 64 Credits
+- `2F 61`: `/a`
-// Device sendet Eintraege
+
-41 0A 00 00 00 00 00 00 06 73 6F 75 6E 64 31  // LS_ENTRY: FILE, size=0, name="sound1" (gekuerzt)
+### Implementierungsnotizen
-// ... weitere Eintraege ...
+
-42 04 00 01 00 00 00              // LS_END, total_entries = 1
+- Unknown `REQUEST.data_type` wird aktuell mit `ERROR(EINVAL)` beantwortet.
-```
+- Unbekannte/unerwartete `frame_type` im aktiven Protokollthread führen zu `ERROR(EPROTO)`.
+- Stream-Timeout in Firmware erzeugt aktiv `ERROR(ETIMEDOUT)`.
+- Upload-Timeout im FS-Thread (2 s Inaktivität) bricht intern ab; die Host-Seite sollte eigene Watchdogs haben.

webpage/.prettierrc

@@ -4,7 +4,7 @@
   "singleAttributePerLine": false,
   "overrides": [
     {
-      "files": ["*.svelte", "*.astro"],
+      "files": ["*.svelte", "*.astro", "*.ts", "*.js", "*.tsx", "*.jsx"],
       "options": {
         "printWidth": 100
       }

webpage/astro.config.mjs

@@ -1,12 +1,15 @@
 // @ts-check
 import { defineConfig } from 'astro/config';
-
 import svelte from '@astrojs/svelte';
-
 import tailwindcss from '@tailwindcss/vite';
 
+const isProd = process.env.NODE_ENV === 'production';
+
 // https://astro.build/config
 export default defineConfig({
+  base: isProd ? '/buzzer/' : '/',
+  site: 'https://home.iten.pro',
+
   integrations: [svelte()],
 
   vite: {

webpage/package.json

@@ -9,9 +9,9 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/svelte": "^7.2.5",
+    "@astrojs/svelte": "^8.0.0",
     "@tailwindcss/vite": "^4.2.1",
-    "astro": "^5.17.1",
+    "astro": "^6.0.3",
     "prettier-plugin-svelte": "^3.5.1",
     "svelte": "^5.53.7",
     "tailwindcss": "^4.2.1",

webpage/public/favicon.svg

@@ -1,9 +1,17 @@
-<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 128 128">
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" width="1000" height="1000"><style>
-    <path d="M50.4 78.5a75.1 75.1 0 0 0-28.5 6.9l24.2-65.7c.7-2 1.9-3.2 3.4-3.2h29c1.5 0 2.7 1.2 3.4 3.2l24.2 65.7s-11.6-7-28.5-7L67 45.5c-.4-1.7-1.6-2.8-2.9-2.8-1.3 0-2.5 1.1-2.9 2.7L50.4 78.5Zm-1.1 28.2Zm-4.2-20.2c-2 6.6-.6 15.8 4.2 20.2a17.5 17.5 0 0 1 .2-.7 5.5 5.5 0 0 1 5.7-4.5c2.8.1 4.3 1.5 4.7 4.7.2 1.1.2 2.3.2 3.5v.4c0 2.7.7 5.2 2.2 7.4a13 13 0 0 0 5.7 4.9v-.3l-.2-.3c-1.8-5.6-.5-9.5 4.4-12.8l1.5-1a73 73 0 0 0 3.2-2.2 16 16 0 0 0 6.8-11.4c.3-2 .1-4-.6-6l-.8.6-1.6 1a37 37 0 0 1-22.4 2.7c-5-.7-9.7-2-13.2-6.2Z" />
+    #light-icon {
-    <style>
+      display: inline;
-        path { fill: #000; }
+    }
-        @media (prefers-color-scheme: dark) {
+    #dark-icon {
-            path { fill: #FFF; }
+      display: none;
-        }
+    }
-    </style>
+
-</svg>
+    @media (prefers-color-scheme: dark) {
+      #light-icon {
+        display: none;
+      }
+      #dark-icon {
+        display: inline;
+      }
+    }
+  </style><g id="light-icon"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" width="1000" height="1000"><g><g transform="matrix(31.25,0,0,31.25,0,0)"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="32" height="32" fill="#000000" viewBox="0 0 256 256" id="svg1" sodipodi:docname="siren.svg" inkscape:version="1.4 (86a8ad7, 2024-10-11)" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:svg="http://www.w3.org/2000/svg"><defs id="defs1"></defs><sodipodi:namedview id="namedview1" pagecolor="#ffffff" bordercolor="#000000" borderopacity="0.25" inkscape:showpageshadow="2" inkscape:pageopacity="0.0" inkscape:pagecheckerboard="0" inkscape:deskcolor="#d1d1d1" inkscape:zoom="36.46875" inkscape:cx="16" inkscape:cy="16" inkscape:window-width="3440" inkscape:window-height="1369" inkscape:window-x="1672" inkscape:window-y="-8" inkscape:window-maximized="1" inkscape:current-layer="svg1"></sodipodi:namedview><path d="m 232,176 v 24 a 16,16 0 0 1 -16,16 H 40 A 16,16 0 0 1 24,200 V 176 A 16,16 0 0 1 40,160 V 128 A 88,88 0 0 1 128.67,40 C 176.82,40.36 216,80.29 216,129 v 31 a 16,16 0 0 1 16,16 z" id="path5"></path><path d="M 216,200 V 176 H 40 v 24 z" id="path7" style="fill:#b3b3b3"></path><path d="M 56,160 H 200 V 129 C 200,89 167.95,56.29 128.55,56 H 128 a 72,72 0 0 0 -72,72 z" id="path6" style="fill:#ff0000"></path><path d="M 137.34,72.11 A 8,8 0 1 0 134.7,87.89 C 153.67,91.08 168,108.32 168,128 a 8,8 0 0 0 16,0 c 0,-27.4 -20.07,-51.43 -46.68,-55.89 z" id="path4"></path><path d="M 50.34,45.66 A 8.0044488,8.0044488 0 0 0 61.66,34.34 l -8,-8 A 8.0044488,8.0044488 0 0 0 42.34,37.66 Z" id="path3"></path><path d="m 200,48 a 8,8 0 0 0 5.66,-2.34 l 8,-8 A 8.0044488,8.0044488 0 0 0 202.34,26.34 l -8,8 A 8,8 0 0 0 200,48 Z" id="path2"></path><path d="M 120,16 V 8 a 8,8 0 0 1 16,0 v 8 a 8,8 0 0 1 -16,0 z" id="path1"></path></svg></g></g></svg></g><g id="dark-icon"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" width="1000" height="1000"><g><g transform="matrix(31.25,0,0,31.25,0,0)"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="32" height="32" fill="#000000" viewBox="0 0 256 256" id="svg1" sodipodi:docname="siren_dark.svg" inkscape:version="1.4 (86a8ad7, 2024-10-11)" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:svg="http://www.w3.org/2000/svg"><defs id="defs1"></defs><sodipodi:namedview id="namedview1" pagecolor="#ffffff" bordercolor="#000000" borderopacity="0.25" inkscape:showpageshadow="2" inkscape:pageopacity="0.0" inkscape:pagecheckerboard="0" inkscape:deskcolor="#d1d1d1" inkscape:zoom="36.46875" inkscape:cx="16" inkscape:cy="16" inkscape:window-width="3440" inkscape:window-height="1369" inkscape:window-x="1672" inkscape:window-y="-8" inkscape:window-maximized="1" inkscape:current-layer="svg1"></sodipodi:namedview><path d="m 232,176 v 24 a 16,16 0 0 1 -16,16 H 40 A 16,16 0 0 1 24,200 V 176 A 16,16 0 0 1 40,160 V 128 A 88,88 0 0 1 128.67,40 C 176.82,40.36 216,80.29 216,129 v 31 a 16,16 0 0 1 16,16 z" id="path5" style="fill:#ffffff"></path><path d="M 216,200 V 176 H 40 v 24 z" id="path7" style="fill:#b3b3b3"></path><path d="M 56,160 H 200 V 129 C 200,89 167.95,56.29 128.55,56 H 128 a 72,72 0 0 0 -72,72 z" id="path6" style="fill:#ff0000"></path><path d="M 137.34,72.11 A 8,8 0 1 0 134.7,87.89 C 153.67,91.08 168,108.32 168,128 a 8,8 0 0 0 16,0 c 0,-27.4 -20.07,-51.43 -46.68,-55.89 z" id="path4" style="fill:#ffffff"></path><path d="M 50.34,45.66 A 8.0044488,8.0044488 0 0 0 61.66,34.34 l -8,-8 A 8.0044488,8.0044488 0 0 0 42.34,37.66 Z" id="path3" style="fill:#ffffff"></path><path d="m 200,48 a 8,8 0 0 0 5.66,-2.34 l 8,-8 A 8.0044488,8.0044488 0 0 0 202.34,26.34 l -8,8 A 8,8 0 0 0 200,48 Z" id="path2" style="fill:#ffffff"></path><path d="M 120,16 V 8 a 8,8 0 0 1 16,0 v 8 a 8,8 0 0 1 -16,0 z" id="path1" style="fill:#ffffff"></path></svg></g></g></svg></g></svg>

webpage/public/site.webmanifest

@@ -0,0 +1,21 @@
+{
+  "name": "Edis Buzzer",
+  "short_name": "Buzzer",
+  "icons": [
+    {
+      "src": "/web-app-manifest-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/web-app-manifest-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
+    }
+  ],
+  "theme_color": "#ffffff",
+  "background_color": "#ffffff",
+  "display": "standalone"
+}

webpage/src/components/App.svelte

@@ -0,0 +1,31 @@
+<script lang="ts">
+  import Header from "./components/Header.svelte";
+</script>
+
+<div class="flex flex-col min-h-screen">
+  <Header />
+
+  <main class="main-layout flex-grow">
+    
+    <section class="buzzer-card p-6 h-64">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Dateiverarbeitung</h3>
+      </section>
+
+    <section class="buzzer-card p-6 h-64">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Buzzer Status</h3>
+      </section>
+
+    <section class="buzzer-card p-6 h-96 lg:col-span-1">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Lokale Sounds</h3>
+    </section>
+
+    <section class="buzzer-card p-6 h-96 lg:col-span-1">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Buzzer Sounds</h3>
+    </section>
+
+  </main>
+
+  <footer class="hidden sm:flex justify-center items-center py-4 bg-slate-50 border-t border-slate-200 text-[10px] text-slate-400 uppercase tracking-widest">
+    &copy; 2026 Edis Buzzer Management Studio | Nerd Mode Active
+  </footer>
+</div>

webpage/src/components/AppGuard.svelte

@@ -1,61 +1,52 @@
 <script lang="ts">
   import { onMount } from "svelte";
-  import { isInitializing, isBluetoothSupported, isSerialSupported } from "../lib/store";
+  import { isInitializing, isBluetoothSupported } from "../lib/store";
-  import { performHardwareCheck, getBrowserName } from "../lib/init";
+  import { performHardwareCheck } from "../lib/init";
   import ToastContainer from "./ToastContainer.svelte";
-  import { injectDummyDevices } from "../lib/store";
 
-  let browserName = "";
+  onMount(async () => {
-  onMount(() => {
-    browserName = getBrowserName();
     performHardwareCheck();
-    injectDummyDevices(); // Fügt Dummy-Geräte für Testzwecke hinzu
+
+    if ($isBluetoothSupported) {
+      const { restoreSession } = await import("../lib/bluetooth");
+      await restoreSession();
+    }
   });
 </script>
 
 {#if $isInitializing}
-  <div class="fixed inset-0 bg-slate-50 flex items-center justify-center z-[100]">
+  <div class="fixed inset-0 bg-surface flex items-center justify-center z-[100]">
-    <p class="text-slate-600 font-mono animate-pulse">SYSTEM_CHECK_RUNNING...</p>
+    <p class="text-on-surface font-mono animate-pulse text-base md:text-lg text-center">
+      Browserkompatibilität wird geprüft...
+    </p>
   </div>
-{:else if !$isBluetoothSupported && !$isSerialSupported}
+{:else if !$isBluetoothSupported}
-  <div class="min-h-[60vh] flex items-center justify-center p-4">
+  <div
-    <div class="max-w-md w-full bg-white border-2 border-red-600 shadow-2xl rounded-sm p-8 pb-4">
+    class="fixed lg:h-screen inset-0 flex flex-col items-center justify-center p-0 lg:p-4 z-[100] bg-white lg:bg-transparent"
-      <h1 class="text-2xl font-black text-red-600 mb-4 uppercase italic">Inkompatibler Browser</h1>
+    style="hyphens:auto;"
+  >
+    <div
+      class="w-full h-full lg:h-auto lg:max-w-md bg-red-50 shadow-red-500/30 lg:border border-red-600 lg:shadow-xl lg:rounded-lg p-6 lg:p-8 text-red-600 flex flex-col justify-center"
+    >
+      <h1 class="text-2xl font-bold mb-2 text-center">Dein Browser ist... suboptimal</h1>
+      <div class="text-center text-7xl md:text-9xl font-bold mb-4">🥺</div>
 
-      <p class="text-slate-800 mb-6">
+      <div class="space-y-4 text-base md:text-lg text-center md:text-left">
-        Du nutzt aktuell <strong>{browserName}</strong>
+        <p>
-        . Dieser Browser unterstützt weder Bluetooth noch serielle USB-Verbindungen.
+          Leider unterstützt dein Browser die benötigten Bluetooth-Funktionen nicht. Bitte versuche
-      </p>
+          es mit einem aktuellen <span class="font-semibold">Chrome</span>
-
+          oder einem andern Chromium-basierten Browser.
-      <div class="space-y-2 mb-4 text-sm font-mono">
+          <span class="font-semibold">Winzigweich Kante</span>
-        <div class="flex justify-between border-b border-slate-100 pb-1">
+           soll gerüchteweise auch Chromium-basiert sein...
-          <span>Web Bluetooth:</span>
+        </p>
-          <span class="text-red-600 font-bold">NICHT UNTERSTÜTZT</span>
+        <p>
-        </div>
+          Rundreise auf iOS unterstützt Bluetooth leider nicht, aber du kannst es mit einem
-        <div class="flex justify-between border-b border-slate-100 pb-1">
+          vernünftigen Gerät oder Browser versuchen.
-          <span>Web Serial:</span>
+        </p>
-          <span class="text-red-600 font-bold">NICHT UNTERSTÜTZT</span>
-        </div>
       </div>
-
-      <p class="text-xs text-slate-500 mb-6 italic">
-        (Info: Firefox und Safari blockieren diese Hardware-Schnittstellen aus Prinzip.)
-      </p>
-
-      <a
-        href="https://www.google.com/chrome/"
-        class="block w-full text-center bg-blue-600 text-white py-3 font-bold hover:bg-blue-700 transition uppercase tracking-widest text-sm mb-4"
-      >
-        Googles Glanzeisen installieren
-      </a>
-
-      <p class="text-xs text-slate-500 mb-6 italic">
-        Gerüchten zufolge soll <b>Winzigweichs Kante</b>
-        -Browser diese Technologien auch unterstützen. Aber wer nutzt schon diese Weichware?
-      </p>
     </div>
   </div>
 {:else}
-  <ToastContainer client:load />
+  <ToastContainer />
   <slot />
 {/if}

webpage/src/components/AudioDropzone.svelte

@@ -0,0 +1,456 @@
+<script lang="ts">
+  import { GearIcon, CloudArrowUpIcon, InfoIcon, CaretDownIcon } from "phosphor-svelte";
+  import { slide, fade } from "svelte/transition";
+  import { addToast } from "../lib/toast";
+  import { processAudioFile } from "../lib/audioProcessor";
+  import { saveLocalFile } from "../lib/db";
+  import { refreshLocal } from "../lib/sync";
+  import { updateLocalAudioFormat, updateLocalAudioCrc } from "../lib/tagHandler";
+  import { audioOptions } from "../lib/store";
+  import { AUDIO_PRESETS, type AudioPresetName } from "../lib/settings";
+  import { tooltip } from "../lib/actions/tooltip";
+  import { clickOutside } from "../lib/actions/clickOutside"; // Angenommen, diese Action existiert bereits (analog zu Ihren anderen Menüs).
+
+  let isFileDragOver = false;
+  let showSettings = false;
+  let showPresetDropdown = false; // Neuer Zustand für das Custom Dropdown
+
+  // Definitionen der Preset-Infos für Tooltips im Dropdown
+  const presetInfos: Record<AudioPresetName, { name: string; desc: string }> = {
+    normal: { name: "Normal", desc: "Für natürliche Sprache. Moderate Verdichtung." },
+    broadcast: { name: "Broadcast", desc: "Aggressiv, sehr laut (Radio-Style). Maximale Präsenz." },
+    custom: { name: "Benutzerdefiniert", desc: "Manuelle Anpassung aller Kompressor-Parameter." },
+  };
+
+  // Reagiert auf Preset-Wechsel
+  function handlePresetChange(preset: AudioPresetName) {
+    $audioOptions.preset = preset;
+    showPresetDropdown = false; // Dropdown nach Auswahl schließen
+
+    if (preset !== "custom") {
+      const p = AUDIO_PRESETS[preset];
+      $audioOptions = {
+        ...$audioOptions,
+        compressorThreshold: p.compressorThreshold!,
+        compressorRatio: p.compressorRatio!,
+        compressorKnee: p.compressorKnee!,
+        compressorAttack: p.compressorAttack!,
+        compressorRelease: p.compressorRelease!,
+      };
+    }
+  }
+
+  // Setzt das Preset automatisch auf Custom, sobald ein Slider bewegt wird
+  function setCustomPreset() {
+    $audioOptions.preset = "custom";
+  }
+
+  async function handleDrop(event: DragEvent) {
+    isFileDragOver = false;
+    showSettings = false;
+    showPresetDropdown = false; // Dropdown sicherheitshalber schließen
+
+    const files = event.dataTransfer?.files;
+    if (!files || files.length === 0) return;
+
+    const fileArray = Array.from(files);
+
+    const audioFiles = fileArray.filter((file) => file.type.startsWith("audio/"));
+    const rawFiles = fileArray.filter((file) => file.type === ""); // Ohne MIME-Type
+
+    if (audioFiles.length > 0 || rawFiles.length > 0) {
+      // 1. Reguläre Dateien umwandeln & taggen
+      for (const file of audioFiles) {
+        try {
+          const { buffer, name } = await processAudioFile(file, $audioOptions);
+          await saveLocalFile(name, new Blob([buffer]), buffer.byteLength);
+
+          await updateLocalAudioFormat(name, { codec: 0, bitDepth: 16, sampleRate: 16000 });
+          await updateLocalAudioCrc(name);
+
+          addToast(`Gespeichert & Getaggt: ${name}`, "success");
+        } catch (err) {
+          addToast(`Fehler bei ${file.name}: ${err}`, "error");
+        }
+      }
+
+      // 2. Rohdaten bypassen (direkt speichern & taggen)
+      for (const file of rawFiles) {
+        try {
+          const name = file.name;
+          await saveLocalFile(name, file, file.size);
+
+          // TagHandler erkennt alte Tags automatisch und fügt System-Tags sicher hinzu
+          await updateLocalAudioFormat(name, { codec: 0, bitDepth: 16, sampleRate: 16000 });
+          await updateLocalAudioCrc(name);
+
+          addToast(`Roh-Datei importiert: ${name}`, "success");
+        } catch (err) {
+          addToast(`Fehler bei Roh-Import ${file.name}: ${err}`, "error");
+        }
+      }
+      refreshLocal();
+    } else {
+      addToast("Keine gültigen Dateien gefunden.", "error");
+    }
+  }
+</script>
+
+<svelte:window
+  on:keydown={(e) => {
+    if (e.key === "Escape") showSettings = false;
+  }}
+/>
+
+<section class="buzzer-card flex flex-col h-full transition-all duration-300 min-w-[320px]">
+  <div class="card-header" class:blur={isFileDragOver}>
+    <h3 class="card-title">Dateiverarbeitung</h3>
+    <button class="btn" aria-label="Einstellungen" on:click={() => (showSettings = !showSettings)}>
+      <GearIcon class="icon" />
+    </button>
+  </div>
+
+  <div
+    class="card-body flex flex-col flex-1"
+    role="region"
+    aria-label="Audiofile dropzone"
+    on:dragenter={() => (isFileDragOver = true)}
+    on:dragleave={() => (isFileDragOver = false)}
+    on:dragover|preventDefault
+    on:drop|preventDefault={handleDrop}
+  >
+    {#if !showSettings}
+      <div
+        class="flex justify-center items-center pointer-events-none p-4 pb-0"
+        in:fade={{ duration: 200 }}
+      >
+        <div
+          class="text-center text-2xs tracking-tight font-mono font-semibold transition-all"
+          class:blur={isFileDragOver}
+        >
+          <span class={$audioOptions.lowCut ? "text-emerald-500" : "text-text-muted"}>LOW CUT</span>
+          |
+          <span class={$audioOptions.compress ? "text-emerald-500" : "text-text-muted"}>
+            COMPRESSOR
+          </span>
+          |
+          <span class={$audioOptions.normalize ? "text-emerald-500" : "text-text-muted"}>
+            NORMALIZER
+          </span>
+        </div>
+      </div>
+
+      <div class="flex-1 p-4 pt-2">
+        <div
+          in:fade={{ duration: 200 }}
+          class="flex h-full items-center justify-center border-2 border-dashed rounded-lg pointer-events-none transition-all duration-300 min-h-[8rem]"
+          class:border-slate-300={!isFileDragOver}
+          class:border-indigo-500={isFileDragOver}
+          class:bg-indigo-50={isFileDragOver}
+        >
+          <div class="relative flex size-24 transition-transform" class:scale-110={isFileDragOver}>
+            <span
+              class="absolute inline-flex h-full w-full opacity-50"
+              class:animate-ping={isFileDragOver}
+              class:text-indigo-500={isFileDragOver}
+              class:text-transparent={!isFileDragOver}
+            >
+              <CloudArrowUpIcon class="w-full h-full" />
+            </span>
+            <span
+              class="relative inline-flex size-24 transition-colors"
+              class:text-slate-500={!isFileDragOver}
+              class:text-indigo-600={isFileDragOver}
+            >
+              <CloudArrowUpIcon class="w-full h-full transition-colors" />
+            </span>
+          </div>
+        </div>
+      </div>
+    {:else}
+      <div class="flex-1 flex flex-col bg-white h-full" in:slide={{ duration: 300 }}>
+        <div
+          class="flex items-center justify-between px-4 pt-4 pb-2 border-b border-slate-100 mb-4"
+        >
+          <h4 class="font-semibold text-sm text-slate-800">Audio-Optionen</h4>
+        </div>
+
+        <div class="space-y-5 flex-1 overflow-y-auto px-4 pb-4">
+          <div class="flex flex-col gap-2">
+            <div class="flex items-center gap-2">
+              <div
+                use:tooltip={{
+                  text: "Entfernt tieffrequentes Rumpeln (Wind, Trittschall). Schont kleine Lautsprecher und verhindert Verzerrungen.",
+                  pos: "right",
+                }}
+              >
+                <InfoIcon class="text-text-muted size-4" />
+              </div>
+              <label class="flex items-center space-x-2 text-sm font-medium cursor-pointer flex-1">
+                <input
+                  type="checkbox"
+                  bind:checked={$audioOptions.lowCut}
+                  class="accent-indigo-600"
+                />
+                <span>Low-Cut Filter</span>
+              </label>
+            </div>
+            {#if $audioOptions.lowCut}
+              <div class="pl-6 flex items-center gap-3">
+                <span class="text-xs text-text-muted w-10 text-right">
+                  {$audioOptions.lowCutFreq} Hz
+                </span>
+                <input
+                  type="range"
+                  min="50"
+                  max="300"
+                  step="10"
+                  bind:value={$audioOptions.lowCutFreq}
+                  class="flex-1 accent-indigo-500 h-1"
+                />
+              </div>
+            {/if}
+          </div>
+
+          <div class="flex flex-col gap-2">
+            <div class="flex items-center gap-2">
+              <div
+                use:tooltip={{
+                  text: "Gleicht Lautstärkeunterschiede an. Macht leise Passagen lauter und fängt laute Spitzen ab.",
+                  pos: "right",
+                }}
+              >
+                <InfoIcon class="text-text-muted size-4" />
+              </div>
+              <label class="flex items-center space-x-2 text-sm font-medium cursor-pointer flex-1">
+                <input
+                  type="checkbox"
+                  bind:checked={$audioOptions.compress}
+                  class="accent-indigo-600"
+                />
+                <span>Dynamik-Kompressor</span>
+              </label>
+            </div>
+
+            {#if $audioOptions.compress}
+              <div class="pl-6 flex flex-col gap-3">
+                <div class="relative" use:clickOutside={() => (showPresetDropdown = false)}>
+                  <button
+                    type="button"
+                    class="flex items-center justify-between w-full text-sm border border-slate-300 rounded p-1.5 bg-slate-50 hover:bg-slate-100 transition"
+                    on:click={() => (showPresetDropdown = !showPresetDropdown)}
+                  >
+                    <div class="flex items-center gap-2">
+                      <div
+                        use:tooltip={{ text: presetInfos[$audioOptions.preset].desc, pos: "right" }}
+                      >
+                        <InfoIcon class="text-text-muted size-4" />
+                      </div>
+                      <span>Preset: {presetInfos[$audioOptions.preset].name}</span>
+                    </div>
+                    <span class:rotate-180={showPresetDropdown}>
+                      <CaretDownIcon class="size-4 text-slate-500 transition-transform" />
+                    </span>
+                  </button>
+
+                  {#if showPresetDropdown}
+                    <div
+                      class="absolute top-full left-0 right-0 mt-1 bg-white border border-slate-200 rounded-md shadow-lg z-20 overflow-hidden"
+                      transition:fade={{ duration: 150 }}
+                    >
+                      {#each Object.entries(presetInfos) as [key, info]}
+                        <button
+                          type="button"
+                          class="flex items-center gap-2 w-full text-left text-sm px-3 py-2 hover:bg-indigo-50 transition"
+                          class:bg-indigo-100={$audioOptions.preset === key}
+                          class:font-medium={$audioOptions.preset === key}
+                          on:click={() => handlePresetChange(key as AudioPresetName)}
+                        >
+                          <div use:tooltip={{ text: info.desc, pos: "right" }}>
+                            <InfoIcon class="text-text-muted size-4" />
+                          </div>
+                          <span>{info.name}</span>
+                        </button>
+                      {/each}
+                    </div>
+                  {/if}
+                </div>
+
+                <div class="grid grid-cols-1 gap-2 text-xs">
+                  <div
+                    class="flex items-center gap-2"
+                    class:opacity-50={$audioOptions.preset !== "custom"}
+                  >
+                    <span
+                      class="w-20 cursor-help"
+                      use:tooltip={{
+                        text: "Pegel, ab dem der Kompressor zu arbeiten beginnt.",
+                        pos: "right",
+                      }}
+                    >
+                      Threshold
+                    </span>
+                    <span class="text-text-muted w-16 text-right">
+                      {$audioOptions.compressorThreshold} dB
+                    </span>
+                    <input
+                      type="range"
+                      min="-60"
+                      max="0"
+                      step="1"
+                      bind:value={$audioOptions.compressorThreshold}
+                      disabled={$audioOptions.preset !== "custom"}
+                      on:input={setCustomPreset}
+                      class="flex-1 accent-indigo-500 h-1"
+                    />
+                  </div>
+                  <div
+                    class="flex items-center gap-2"
+                    class:opacity-50={$audioOptions.preset !== "custom"}
+                  >
+                    <span
+                      class="w-20 cursor-help"
+                      use:tooltip={{
+                        text: "Stärke der Pegelreduzierung oberhalb des Thresholds.",
+                        pos: "right",
+                      }}
+                    >
+                      Ratio
+                    </span>
+                    <span class="text-text-muted w-16 text-right">
+                      {$audioOptions.compressorRatio}:1
+                    </span>
+                    <input
+                      type="range"
+                      min="1"
+                      max="20"
+                      step="1"
+                      bind:value={$audioOptions.compressorRatio}
+                      disabled={$audioOptions.preset !== "custom"}
+                      on:input={setCustomPreset}
+                      class="flex-1 accent-indigo-500 h-1"
+                    />
+                  </div>
+                  <div
+                    class="flex items-center gap-2"
+                    class:opacity-50={$audioOptions.preset !== "custom"}
+                  >
+                    <span
+                      class="w-20 cursor-help"
+                      use:tooltip={{
+                        text: "Reaktionszeit des Kompressors auf Pegelüberschreitungen.",
+                        pos: "right",
+                      }}
+                    >
+                      Attack
+                    </span>
+                    <span class="text-text-muted w-16 text-right">
+                      {($audioOptions.compressorAttack * 1000).toFixed(0)} ms
+                    </span>
+                    <input
+                      type="range"
+                      min="0.001"
+                      max="0.1"
+                      step="0.001"
+                      bind:value={$audioOptions.compressorAttack}
+                      disabled={$audioOptions.preset !== "custom"}
+                      on:input={setCustomPreset}
+                      class="flex-1 accent-indigo-500 h-1"
+                    />
+                  </div>
+                  <div
+                    class="flex items-center gap-2"
+                    class:opacity-50={$audioOptions.preset !== "custom"}
+                  >
+                    <span
+                      class="w-20 cursor-help"
+                      use:tooltip={{
+                        text: "Zeit, bis der Kompressor nach Unterschreitung des Thresholds aufhört zu arbeiten.",
+                        pos: "right",
+                      }}
+                    >
+                      Release
+                    </span>
+                    <span class="text-text-muted w-16 text-right">
+                      {($audioOptions.compressorRelease * 1000).toFixed(0)} ms
+                    </span>
+                    <input
+                      type="range"
+                      min="0.01"
+                      max="1"
+                      step="0.01"
+                      bind:value={$audioOptions.compressorRelease}
+                      disabled={$audioOptions.preset !== "custom"}
+                      on:input={setCustomPreset}
+                      class="flex-1 accent-indigo-500 h-1"
+                    />
+                  </div>
+                </div>
+              </div>
+            {/if}
+          </div>
+
+          <div class="flex flex-col gap-2">
+            <div class="flex items-center gap-2">
+              <div
+                use:tooltip={{
+                  text: "Hebt das verarbeitete Signal linear an, bis der lauteste Peak exakt den Zielwert erreicht.",
+                  pos: "right",
+                }}
+              >
+                <InfoIcon class="text-text-muted size-4" />
+              </div>
+              <label class="flex items-center space-x-2 text-sm font-medium cursor-pointer flex-1">
+                <input
+                  type="checkbox"
+                  bind:checked={$audioOptions.normalize}
+                  class="accent-indigo-600"
+                />
+                <span>Lautstärke normalisieren</span>
+              </label>
+            </div>
+            {#if $audioOptions.normalize}
+              <div class="pl-6 flex items-center gap-3">
+                <span class="text-xs text-text-muted w-10 text-right">
+                  {$audioOptions.normalizeTargetDb} dB
+                </span>
+                <input
+                  type="range"
+                  min="-10"
+                  max="0"
+                  step="0.1"
+                  bind:value={$audioOptions.normalizeTargetDb}
+                  class="flex-1 accent-indigo-500 h-1"
+                />
+              </div>
+            {/if}
+          </div>
+
+          <div class="text-xs text-text-muted bg-slate-100 p-3 rounded mt-4">
+            Hinweis: Die Konvertierung zu 16kHz Mono PCM erfolgt immer automatisch beim Speichern.
+          </div>
+        </div>
+      </div>
+    {/if}
+  </div>
+</section>
+
+<style>
+  @reference "../styles/app.css";
+
+  .btn {
+    @apply rounded-full transition-colors border-0 p-2;
+
+    &:not(:disabled) {
+      @apply hover:bg-slate-200 hover:shadow-sm;
+    }
+  }
+
+  /* Styling für die Range-Slider */
+  input[type="range"] {
+    @apply cursor-pointer;
+  }
+  input[type="range"]:disabled {
+    @apply cursor-not-allowed;
+  }
+</style>

webpage/src/components/BuzzerControl.svelte

@@ -9,9 +9,11 @@
     fsInfo,
     loadConnectionState,
     availableDevices,
+    transferStats,
+    resetTransferStats,
   } from "../lib/store";
   import { refreshRemote } from "../lib/sync";
-  import { fetchFileThroughputTest } from "../lib/transport";
+  import { getFile } from "../lib/transport";
 
   onMount(() => {
     restoreSession();
@@ -127,11 +129,40 @@
     {/if}
   </div>
   <button
-    class="mt-4 w-full text-left text-xs text-slate-500 hover:text-slate-700 transition"
+    class="mt-4 w-full text-left text-xs text-slate-500 hover:text-slate-700 transition-all"
-    on:click={() => {
+    on:click={async () => {
-      fetchFileThroughputTest("/lfs/a/countdown");
+      // 1. Alles auf Null setzen
+      resetTransferStats();
+
+      // 2. Gesamtgröße für beide Dateien zusammen setzen (z. B. 320000 + 224800)
+      const sizeFile1 = 320000;
+      const sizeFile2 = 224800;
+      transferStats.update((s) => ({
+        ...s,
+        overallTotal: sizeFile1 + sizeFile2,
+        currentFileName: "countdown",
+      }));
+
+      try {
+        // 3. Erste Datei laden und auf Abschluss warten
+        const success1 = await getFile("/lfs/a/countdown");
+
+        if (success1) {
+          // 4. Name für die zweite Datei aktualisieren
+          transferStats.update((s) => ({ ...s, currentFileName: "404" }));
+
+          // 5. Zweite Datei laden und auf Abschluss warten
+          await getFile("/lfs/a/404");
+          transferStats.update((s) => ({ ...s, overallDone: s.overallTotal }));
+        }
+      } catch (err) {
+        console.error("Fehler beim Test-Transfer:", err);
+      } finally {
+        await new Promise(r => setTimeout(r, 2000))
+        resetTransferStats();
+      }
     }}
   >
-    Durchsatztest mit /lfs/a/countdown
+    Durchsatztest (Mehrere Dateien)
   </button>
 </div>

webpage/src/components/DeviceInfo.svelte

@@ -0,0 +1,163 @@
+<script lang="ts">
+  import FlashUsage from "./FlashUsage.svelte";
+  import { deviceInfo, fwInfo } from "../lib/store";
+  import { FW_STATUS } from "../lib/protocol/constants";
+  import { tooltip } from "../lib/actions/tooltip";
+  import {
+    CheckCircleIcon,
+    WarningIcon,
+    BatteryEmptyIcon,
+    BatteryLowIcon,
+    BatteryMediumIcon,
+    BatteryHighIcon,
+    BatteryFullIcon,
+    BatteryChargingIcon,
+  } from "phosphor-svelte";
+</script>
+
+<div class="text-sm">
+  <table>
+    <tbody>
+      <tr>
+        <td class="key">Modell</td>
+        <td class="value">
+          {#if $deviceInfo}
+            {$deviceInfo.boardName}
+            {#if $deviceInfo.boardRevision}
+              <span class="text-muted">>Rev. {$deviceInfo.boardRevision}</span>
+            {/if}
+          {:else}
+            unbekannt
+          {/if}
+        </td>
+      </tr>
+      <tr>
+        <td class="key">Version</td>
+        <td class="value flex items-center gap-1">
+          {#if $fwInfo}
+            <span
+              use:tooltip={{
+                text: `Die Firmware-Slotgrösse beträgt <span class="font-medium">${$fwInfo.slot1Size / 1024} kB</span>. Wieso musst Du das wissen? Edi sorgt schon dafür, dass die Updates nicht zu gross sind.<br/> <div class="text-3xl align-center text-center pb-2">😈</div>`,
+                pos: "bottom",
+              }}
+            >
+              {$fwInfo.fwVersion}
+            </span>
+            {#if $fwInfo.fwStatus === FW_STATUS.CONFIRMED}
+              <span
+                use:tooltip={{
+                  text: "Firmware ist bestätigt und damit dauerhaft nutzbar",
+                  pos: "bottom",
+                }}
+                class="relative flex size-5"
+              >
+                <CheckCircleIcon
+                  weight="fill"
+                  class="text-emerald-500 relative inline-flex h-full w-full"
+                />
+              </span>
+              {:else if $fwInfo.fwStatus === FW_STATUS.PENDING}
+              <span
+                use:tooltip={{
+                  text: "Firmware ist nur hochgeladen und noch nicht bestätigt. Du kannst sie nach einem <b>reboot</b> testen. Wenn sie funktioniert, bestätige sie, damit sie dauerhaft nutzbar ist.<br/><b><i>Achtung:</i></b> der Reboot dauert einen Moment, da die Firmware erst umkopiert werden muss.",
+                  pos: "bottom",
+                }}
+                class="relative flex size-5"
+              >
+                <WarningIcon
+                  weight="fill"
+                  class="text-amber-500 absolute inline-flex h-full w-full animate-ping"
+                />
+                <WarningIcon
+                  weight="fill"
+                  class="text-amber-500 relative inline-flex h-full w-full"
+                />
+              </span>
+              {:else if $fwInfo.fwStatus === FW_STATUS.TESTING}
+              <span
+                use:tooltip={{
+                  text: "Die Firmware ist im Testmodus. Wenn sie gut funktioniert, dann <b>bestätige</b> sie, damit sie dauerhaft nutzbar ist. Wenn sie nicht richtig funktioniert, dann kannst Du den Buzzer <b>rebooten</b>, er kehrt dann zur vorhergehenden Version zurück.<br/><b><i>Achtung:</i></b> der Reboot dauert einen Moment, da die Firmware erst umkopiert werden muss.",
+                  pos: "bottom",
+                }}
+                class="relative flex size-5"
+              >
+                <WarningIcon
+                  weight="fill"
+                  class="text-amber-600 absolute inline-flex h-full w-full animate-ping"
+                />
+                <WarningIcon
+                  weight="fill"
+                  class="text-amber-600 relative inline-flex h-full w-full"
+                />
+              </span>
+              {:else if $fwInfo.fwStatus === FW_STATUS.UNKNOWN}
+              <span
+                use:tooltip={{
+                  text: `Die Firmware hat den unbekannten Status <span class="bold font-mono">0x${$fwInfo.fwStatus.toString(16).padStart(2, "0").toUpperCase()}.</span> Weiss der Teufel, was da wieder passiert ist... Vielleicht hilft ein Reboot? Oder Firmware neu flashen? Oder... hast Du ne Idee???`,
+                  pos: "bottom",
+                }}
+                class="relative flex size-5"
+              >
+                <WarningIcon
+                  weight="fill"
+                  class="text-red-500 absolute inline-flex h-full w-full animate-ping"
+                />
+                <WarningIcon
+                  weight="fill"
+                  class="text-red-500 relative inline-flex h-full w-full"
+                />
+              </span>
+            {/if}
+            <span class="text-text-muted ml-1">(Zephyr {$fwInfo.kernelVersion})</span>
+          {:else}
+            unbekannt
+          {/if}
+        </td>
+      </tr>
+      <tr>
+        <td class="key">HW-ID</td>
+        <td class="value">
+          {#if $deviceInfo}
+            <span class="font-mono">{$deviceInfo.deviceId}</span>
+          {:else}
+            unbekannt
+          {/if}
+        </td>
+      </tr>
+      <tr>
+        <td class="key">Batterie</td>
+        <td class="value flex items-center gap-2">
+          85% <BatteryChargingIcon weight="bold" class="w-5 h-5" /> 1200mAh
+        </td>
+      </tr>
+      <tr>
+        <td class="key">Speicher</td>
+        <td class="value">
+          <div class="py-1">
+            <FlashUsage />
+          </div>
+        </td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+
+<style>
+  @reference "../styles/app.css";
+
+  table {
+    @apply w-full text-left;
+  }
+
+  tr {
+    @apply even:bg-slate-100 border-b border-slate-200 last:border-0;
+  }
+
+  .key {
+    @apply p-1 pl-4 text-right text-text-muted;
+  }
+
+  .value {
+    @apply p-1 pr-4 font-semibold;
+  }
+</style>

webpage/src/components/FileList.svelte

@@ -0,0 +1,25 @@
+<script lang="ts">
+  import FileListItem from "./FileListItem.svelte";
+  import { localAudioFiles, buzzerAudioFiles } from "../lib/store";
+  import { slide } from "svelte/transition";
+  import { flip } from "svelte/animate";
+
+  export let type: "local" | "buzzer" = "buzzer";
+
+  // Reaktive Zuweisung: Wechselt automatisch, falls sich 'type' zur Laufzeit ändert
+  $: activeStore = type === "local" ? localAudioFiles : buzzerAudioFiles;
+</script>
+
+<div class="flex flex-col w-full">
+  {#each $activeStore as file (file.name)}
+    <div transition:slide|local={{ duration: 500 }} animate:flip={{ duration: 500 }}>
+      <FileListItem {file} {type} />
+    </div>
+  {/each}
+
+  {#if $activeStore.length === 0}
+    <div class="p-4 text-center text-slate-400 text-sm italic tracking-widest uppercase">
+      Keine Dateien vorhanden.
+    </div>
+  {/if}
+</div>

webpage/src/components/FileListItem.svelte

@@ -0,0 +1,346 @@
+<script lang="ts">
+  import { type BuzzerFile, SyncState } from "../lib/types";
+  import {
+    MusicNotesIcon,
+    DotsThreeVerticalIcon,
+    PlayIcon,
+    TrashIcon,
+    PencilIcon,
+    CircleIcon,
+    QuestionIcon,
+    TagIcon,
+    UserIcon,
+    CheckCircleIcon,
+    WarningIcon,
+    WarningCircleIcon,
+    CloudArrowDownIcon,
+  } from "phosphor-svelte";
+  import {
+    isTransferingRemote,
+    transferStats,
+    transferDetails,
+    buzzerAudioFiles,
+    localAudioFiles,
+    syncStateMap,
+    fsInfo,
+  } from "../lib/store";
+
+  import { SETTINGS } from "../lib/settings";
+  import { tagEditorState } from "../lib/store";
+  import { tooltip } from "../lib/actions/tooltip";
+  import { deleteRemoteFile } from "../lib/transport";
+  import { deleteLocalFile, playLocalFile, downloadLocalFile } from "../lib/db";
+  import { refreshRemote, refreshLocal } from "../lib/sync";
+  import { addToast } from "../lib/toast";
+
+  export let file: BuzzerFile;
+  export let type: "local" | "buzzer" = "buzzer";
+  let menuOpen = false;
+
+  $: activeStore = type === "local" ? localAudioFiles : buzzerAudioFiles;
+  $: selectedFiles = $activeStore.filter((f) => f.selected);
+  $: currentIndex = selectedFiles.findIndex((f) => f.name === $transferStats.currentFileName);
+  $: myIndex = selectedFiles.findIndex((f) => f.name === file.name);
+
+  $: state = (() => {
+    if (!file.selected || !$isTransferingRemote) return "default";
+    if (file.name === $transferStats.currentFileName) return "active";
+    if (myIndex < currentIndex) return "done";
+    if (myIndex > currentIndex) return "pending";
+    return "default";
+  })();
+
+  $: syncStatus = $syncStateMap[type][file.name] || { state: SyncState.UNKNOWN, linkedFiles: [] };
+
+  $: statusConfig = (() => {
+    switch (syncStatus.state) {
+      case SyncState.UNKNOWN:
+        return {
+          icon: QuestionIcon,
+          weight: "fill",
+          color: "text-amber-500",
+          variant: "warning",
+          text: "Prüfsumme fehlt. Bitte Metadaten aktualisieren.",
+        };
+      case SyncState.SINGLE_SIDED:
+        return {
+          icon: CircleIcon,
+          weight: "bold",
+          color: "text-emerald-600",
+          variant: "info",
+          text: `Datei existiert nur ${type === "buzzer" ? "auf dem Buzzer" : "lokal"}.`,
+        };
+      case SyncState.SYNCED:
+        return {
+          icon: CheckCircleIcon,
+          weight: "fill",
+          color: "text-emerald-500",
+          variant: "info",
+          text: "Datei ist synchronisiert.",
+        };
+      case SyncState.CONFLICT:
+        return {
+          icon: WarningIcon,
+          ping: true,
+          weight: "fill",
+          color: "text-amber-600",
+          variant: "warning",
+          text: `Konflikt: Name/Tags weichen ab. Vergleiche mit <span class="text-medium text-on-surface bg-white rounded px-1">${syncStatus.linkedFiles[0]}</span>  ${type === "buzzer" ? "lokal" : "auf dem Buzzer"}`,
+        };
+      case SyncState.DUPLICATE:
+        const duplicateText =
+          syncStatus.linkedFiles.length === 0
+            ? `Diese Datei ist hier ok, aber ${type === "buzzer" ? "lokal" : "auf dem Buzzer"} existieren mehrere identische Versionen.`
+            : `Mehrfach vorhanden: Gleicher Inhalt auch in <span class="text-medium text-on-surface bg-white rounded px-1">${syncStatus.linkedFiles.join("</span>  <span class='text-medium text-on-surface bg-white rounded px-1'>")}</span>`;
+        return {
+          icon: WarningCircleIcon,
+          ping: true,
+          weight: "fill",
+          color: "text-red-600",
+          variant: "danger",
+          text: duplicateText,
+        };
+      default:
+        return null;
+    }
+  })();
+
+  function toggleSelection() {
+    if ($isTransferingRemote) return;
+
+    if (type === "buzzer") {
+      buzzerAudioFiles.update((files) =>
+        files.map((entry) =>
+          entry.name === file.name ? { ...entry, selected: !entry.selected } : entry,
+        ),
+      );
+      return;
+    }
+
+    localAudioFiles.update((files) =>
+      files.map((entry) =>
+        entry.name === file.name ? { ...entry, selected: !entry.selected } : entry,
+      ),
+    );
+  }
+
+  async function handleDeleteClick() {
+    if (!confirm(`Möchten Sie die Datei "${file.name}" wirklich löschen?`)) {
+      menuOpen = false;
+      return;
+    }
+
+    if (type === "buzzer") {
+      try {
+        const basePath = $fsInfo?.audioPath || "/lfs/a";
+        const fullPath = `${basePath}/${file.name}`;
+        await deleteRemoteFile(fullPath);
+        addToast(`Datei ${file.name} erfolgreich vom Buzzer gelöscht.`, "success");
+        await refreshRemote();
+      } catch (error) {
+        console.error("Fehler beim Löschen:", error);
+        addToast("Fehler beim Löschen der Datei auf dem Buzzer.", "error");
+      }
+    } else {
+      try {
+        await deleteLocalFile(file.name);
+        addToast(`Lokale Datei ${file.name} gelöscht.`, "success");
+        await refreshLocal();
+      } catch (error) {
+        console.error("Fehler beim Löschen:", error);
+      }
+    }
+    menuOpen = false;
+  }
+</script>
+
+<svelte:window on:click={() => (menuOpen = false)} />
+
+<div class="relative overflow-hidden group/item">
+  {#if state === "active"}
+    <div
+      class="absolute top-0 left-0 h-full bg-indigo-100 z-0"
+      style="width: {$transferDetails.filePercent}%; transition: {$transferDetails.filePercent === 0
+        ? 'none'
+        : `width ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+    ></div>
+  {/if}
+
+  <!-- svelte-ignore a11y_mouse_events_have_key_events -->
+  <button
+    class="relative z-10 w-full text-left flex-1 px-3 py-1 pr-16 flex items-center border-l-4 transition-colors border-b border-b-border-card
+         {file.selected ? 'border-l-blue-600' : 'border-l-transparent'}
+         {file.selected && state !== 'active' ? 'bg-blue-50' : ''}
+         {!$isTransferingRemote && file.selected ? 'hover:bg-blue-100 cursor-pointer' : ''}
+         {!$isTransferingRemote && !file.selected
+      ? 'hover:bg-slate-100 hover:border-l-blue-200 cursor-pointer'
+      : ''}
+         {$isTransferingRemote ? 'cursor-default' : ''}
+         {state === 'pending' ? 'grayscale opacity-80' : ''}"
+    on:click={toggleSelection}
+    on:mouseenter|stopPropagation={() => (menuOpen = true)}
+    on:mouseleave|stopPropagation={() => (menuOpen = false)}
+    on:blur|stopPropagation={() => (menuOpen = false)}
+    on:focus|stopPropagation={() => (menuOpen = true)}
+    disabled={$isTransferingRemote}
+  >
+    <MusicNotesIcon weight="fill" class="mr-2 w-5 h-5 shrink-0" />
+
+    <div class="flex flex-col flex-1 min-w-0 overflow-hidden pl-1">
+      <div class="flex items-center min-w-0">
+        <span class="font-light truncate min-w-0 text-sm">
+          {file.name || "Unbekannte Datei"}
+          {#if file.metaTags?.t}
+            &thinsp;-&thinsp;
+            <span class="font-normal">{file.metaTags.t}</span>
+          {/if}
+        </span>
+      </div>
+
+      <div class="flex items-center gap-0 text-xs text-text-muted mt-0.5 min-w-0">
+        {#if statusConfig}
+          <span
+            use:tooltip={{
+              text: statusConfig.text,
+              pos: "right",
+              variant: statusConfig.variant,
+            }}
+          >
+            {#if statusConfig.ping}
+              <span class="mr-1 relative inline-flex size-3.5">
+                <svelte:component
+                  this={statusConfig.icon}
+                  weight={statusConfig.weight ? statusConfig.weight : "fill"}
+                  class="opacity-57 text-amber-600 absolute inline-flex h-full w-full animate-ping"
+                />
+                <svelte:component
+                  this={statusConfig.icon}
+                  weight={statusConfig.weight ? statusConfig.weight : "fill"}
+                  class="shrink-0 w-3.5 h-3.5 {statusConfig.color}"
+                />
+              </span>
+            {:else}
+              <svelte:component
+                this={statusConfig.icon}
+                weight={statusConfig.weight ? statusConfig.weight : "fill"}
+                class="mr-1 shrink-0 w-3.5 h-3.5 {statusConfig.color}"
+              />
+            {/if}
+          </span>
+        {/if}
+
+        <span class="font-light shrink-0">
+          {parseFloat((file.size / 1024).toFixed(1))}&thinsp;kB
+        </span>
+        {#if file.metaTags?.a}
+          <UserIcon
+            weight="fill"
+            class="ml-1 pl-1 mr-0.5 shrink-0 text-slate-500 w-4.5 h-3.5 border-l border-l-text-muted"
+          />
+          <span class="truncate min-w-0">{file.metaTags.a}</span>
+        {/if}
+        {#if file.metaTags?.c}
+          <TagIcon
+            weight="fill"
+            class="ml-1 pl-1 mr-0.5 shrink-0 text-slate-500 w-4.5 h-3.5 border-l border-l-text-muted"
+          />
+          <span class="truncate min-w-0">{file.metaTags.c}</span>
+        {/if}
+      </div>
+    </div>
+  </button>
+
+  <!-- svelte-ignore a11y_no_static_element_interactions -->
+  <!-- svelte-ignore a11y_mouse_events_have_key_events -->
+  <div
+    class="menu-btn-grp group/menu"
+    class:is-open={menuOpen}
+    on:mouseout|stopPropagation={() => (menuOpen = false)}
+  >
+    <div
+      class="flex items-center overflow-hidden transition-all duration-300 ease-in-out
+             {menuOpen
+        ? 'max-w-[120px] opacity-100'
+        : 'max-w-0 opacity-0 group-hover/menu:max-w-[120px] group-hover/menu:opacity-100'}"
+    >
+      <button class="menu-btn danger" title="Löschen" on:click|stopPropagation={handleDeleteClick}>
+        <TrashIcon class="list-menu-icon" />
+      </button>
+      <button
+        class="menu-btn"
+        title="Abspielen"
+        on:click|stopPropagation={() => {
+            downloadLocalFile(file.name);
+            menuOpen = false;
+        }}
+      >
+        <CloudArrowDownIcon class="list-menu-icon" />
+      </button>
+      <button
+        class="menu-btn"
+        title="Abspielen"
+        on:click|stopPropagation={() => {
+          if (type === "buzzer") {
+            addToast;
+          } else {
+            playLocalFile(file.name);
+            menuOpen = false;
+          }
+        }}
+      >
+        <PlayIcon class="list-menu-icon" />
+      </button>
+      <button
+        class="menu-btn"
+        title="Datei-Info"
+        on:click|stopPropagation={() => {
+          tagEditorState.set({ show: true, type, fileName: file.name });
+          menuOpen = false;
+        }}
+      >
+        <PencilIcon class="list-menu-icon" />
+      </button>
+    </div>
+
+    <button
+      class="menu-btn !border-r-transparent"
+      on:click|stopPropagation={() => (menuOpen = !menuOpen)}
+    >
+      <DotsThreeVerticalIcon class="list-menu-icon" />
+    </button>
+  </div>
+</div>
+
+<style>
+  @reference "../styles/app.css";
+
+  .menu-btn-grp {
+    @apply absolute right-2 top-1/2 -translate-y-1/2 z-20 overflow-hidden
+      p-0 flex items-center backdrop-blur-sm 
+      rounded-full transition-all;
+  }
+
+  /* Kombiniert Hover von Mausnutzern und aktiven Touch-Zustand */
+  .menu-btn-grp:hover,
+  .menu-btn-grp.is-open {
+    @apply bg-white shadow-sm;
+  }
+
+  .menu-btn {
+    @apply border-r border-r-border-card
+    flex items-center justify-center shrink-0 transition-colors;
+
+    &:not(:disabled):not(.danger) {
+      @apply hover:bg-surface-hover;
+    }
+
+    &.danger:not(:disabled) {
+      @apply text-red-700 hover:bg-red-100;
+    }
+
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed grayscale;
+    }
+  }
+</style>

webpage/src/components/FileListMenu.svelte

@@ -0,0 +1,138 @@
+<script lang="ts">
+  import { localAudioFiles, buzzerAudioFiles } from "../lib/store";
+  import { isConnected, fsInfo, tagEditorState } from "../lib/store";
+
+  import { deleteSelectedLocalFiles } from "../lib/sync";
+  import { addToast } from "../lib/toast";
+  import { tooltip } from "../lib/actions/tooltip";
+  import { updateLocalAudioCrc } from "../lib/tagHandler";
+  import {
+    refreshLocal,
+    refreshRemote,
+    downloadSelectedFiles,
+    uploadSelectedFiles,
+  } from "../lib/sync";
+
+  import {
+    GearIcon,
+    CloudArrowUpIcon,
+    ArrowClockwiseIcon,
+    DotsThreeVerticalIcon,
+    CheckSquareOffsetIcon,
+    SquareIcon,
+    DownloadIcon,
+    TrashIcon,
+    FingerprintIcon,
+    UploadIcon,
+  } from "phosphor-svelte";
+
+  export let type: "local" | "buzzer" = "buzzer";
+  export let onToggleMenu: () => void; // Callback-Prop definieren
+
+  let showMenu = false;
+
+  $: activeStore = type === "local" ? localAudioFiles : buzzerAudioFiles;
+  $: fileCount = $activeStore.length;
+  $: totalSize = $activeStore.reduce((sum, f) => sum + f.size, 0);
+  $: selectedFileCount = $activeStore.filter((f) => f.selected).length;
+  $: selectedFileSize = $activeStore.filter((f) => f.selected).reduce((sum, f) => sum + f.size, 0);
+</script>
+
+<div class="btn-connect-group {$isConnected || type === 'local' ? 'active group' : ''}">
+  {#if type === "buzzer"}
+    <button
+      class="btn-main"
+      aria-label="Alle ausgewählten Dateien herunterladen"
+      on:click={() => {
+        downloadSelectedFiles();
+      }}
+      disabled={!$isConnected || selectedFileCount === 0}
+      title="Alle ausgewählten Dateien herunterladen"
+    >
+      <DownloadIcon class="list-menu-icon" />
+    </button>
+  {:else}
+    <button
+      class="btn-main"
+      aria-label="Alle ausgewählten Dateien herunterladen"
+      on:click={() => {
+        uploadSelectedFiles();
+      }}
+      disabled={!$isConnected || selectedFileCount === 0}
+      title="Alle ausgewählten Dateien hochladen"
+    >
+      <UploadIcon class="list-menu-icon" />
+    </button>
+  {/if}
+  <button
+    class="btn-main"
+    aria-label="Alles Auswählen"
+    on:click={() => {
+      activeStore.update((files) => files.map((f) => ({ ...f, selected: true })));
+    }}
+    disabled={(!$isConnected && type === "buzzer") || selectedFileCount === fileCount}
+    title="Alle auswählen"
+  >
+    <CheckSquareOffsetIcon class="list-menu-icon" />
+  </button>
+  <button
+    class="btn-main"
+    on:click={() => {
+      activeStore.update((files) => files.map((f) => ({ ...f, selected: false })));
+    }}
+    aria-label="Auswahl löschen"
+    disabled={(!$isConnected && type === "buzzer") || selectedFileCount === 0}
+    title="Auswahl aufheben"
+  >
+    <SquareIcon class="list-menu-icon" />
+  </button>
+  <button
+    class="btn-main"
+    on:click={() => {
+      if (type === "buzzer") {
+        refreshRemote();
+      } else {
+        refreshLocal();
+      }
+    }}
+    aria-label="Reload"
+    disabled={!$isConnected && type === "buzzer"}
+    title="Dateiliste neu laden"
+  >
+    <ArrowClockwiseIcon class="list-menu-icon" />
+  </button>
+  <button
+    class="btn-main"
+    aria-label="Menu"
+    disabled={!$isConnected && type === "buzzer"}
+    title="Menu"
+    on:click|stopPropagation={onToggleMenu}
+  >
+    <DotsThreeVerticalIcon class="list-menu-icon" />
+  </button>
+</div>
+
+<style>
+  @reference "../styles/app.css";
+
+  .btn-connect-group {
+    @apply flex items-stretch rounded-full overflow-hidden transition-all;
+  }
+
+  .btn-connect-group.active {
+    @apply hover:border-border-card hover:shadow-sm hover:bg-white;
+  }
+
+  .btn-main {
+    @apply border-r-1 border-transparent last:border-r-0 focus:outline-none;
+
+    &:not(:disabled) {
+      @apply hover:shadow-sm hover:bg-slate-200 cursor-pointer group-hover:border-r-slate-200;
+    }
+
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed group-hover:border-r-slate-200 border-r-transparent;
+    }
+  }
+</style>

webpage/src/components/FileMenuOverlay.svelte

@@ -0,0 +1,181 @@
+<script lang="ts">
+  import { fade, slide } from "svelte/transition";
+  import { localAudioFiles, buzzerAudioFiles } from "../lib/store";
+  import { deleteSelectedLocalFiles, deleteSelectedRemoteFiles } from "../lib/sync";
+  import { addToast } from "../lib/toast";
+  import { tooltip } from "../lib/actions/tooltip";
+  import { updateLocalAudioCrc } from "../lib/tagHandler";
+  import { refreshLocal } from "../lib/sync";
+
+  import {
+    CheckSquareOffsetIcon,
+    SquareIcon,
+    TrashIcon,
+    FingerprintIcon,
+  } from "phosphor-svelte";
+
+  export let show = false;
+  export let type: "local" | "buzzer" = "buzzer";
+  export let onClose: () => void;
+
+  // Interne reaktive Logik statt Props [cite: 15, 16]
+  $: activeStore = type === "local" ? localAudioFiles : buzzerAudioFiles;
+  $: fileCount = $activeStore.length;
+  $: totalSize = $activeStore.reduce((sum, f) => sum + f.size, 0);
+  $: selectedFileCount = $activeStore.filter((f) => f.selected).length;
+  $: selectedFileSize = $activeStore.filter((f) => f.selected).reduce((sum, f) => sum + f.size, 0);
+
+  function closeMenu() {
+    if (onClose) onClose();
+  }
+
+  function formatSize(bytes: number): string {
+    if (bytes < 1024) return `${bytes}\u202FB`;
+    else if (bytes < 10 * 1024) return `${(bytes / 1024).toFixed(2)}\u202F\KiB`;
+    else if (bytes < 100 * 1024) return `${(bytes / 1024).toFixed(1)}\u202F\KiB`;
+    else if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(0)}\u202F\KiB`;
+    else return `${(bytes / (1024 * 1024)).toFixed(2)}\u202F\MiB`;
+  }
+</script>
+
+<svelte:window
+  on:click={() => {
+    if (show) closeMenu();
+  }}
+  on:keydown={(e) => {
+    if (show && e.key === "Escape") closeMenu();
+  }}
+/>
+
+{#if show}
+  <!-- svelte-ignore a11y_click_events_have_key_events -->
+  <!-- svelte-ignore a11y_no_static_element_interactions -->
+  <div
+    class="w-full h-full z-20 bg-white flex flex-col items-center justify-start rounded-b-lg shadow-sm"
+    transition:fade={{ duration: 150 }}
+    on:click|stopPropagation={closeMenu}
+  >
+    <div class="w-full flex flex-col" on:click|stopPropagation>
+      <div
+        class="list_entry text-center bg-gradient-to-b from-white to-slate-100"
+        class:text-text-muted={fileCount === 0}
+      >
+        {#if fileCount === 0}
+          Keine Dateien vorhanden.
+        {:else if selectedFileCount === 0}
+          keine Datei ausgewählt
+        {:else if selectedFileCount === fileCount}
+          Alle {fileCount} Dateien ausgewählt ({formatSize(selectedFileSize)})
+        {:else}
+          {selectedFileCount} von {fileCount} Dateien ausgewählt ({formatSize(
+            selectedFileSize,
+          )}/{formatSize(totalSize)})
+        {/if}
+      </div>
+      <button
+        class="menu-btn"
+        on:click={() => {
+          $activeStore.forEach((f) => (f.selected = true));
+          $activeStore = $activeStore;
+        }}
+        disabled={fileCount === 0 || selectedFileCount === fileCount}
+      >
+        <CheckSquareOffsetIcon class="btn-icon" />
+        Alle Dateien auswählen
+      </button>
+      <button
+        class="menu-btn"
+        on:click={() => {
+          $activeStore.forEach((f) => (f.selected = false));
+          $activeStore = $activeStore;
+        }}
+        disabled={fileCount === 0 || selectedFileCount === 0}
+      >
+        <SquareIcon class="btn-icon" />
+        Alle Dateien abwählen
+      </button>
+      {#if selectedFileCount > 0}
+        <div
+          class="list_entry border-t mt-2 text-medium bg-gradient-to-b from-white to-slate-100 flex items-justify items-center"
+          class:text-text-muted={selectedFileCount === 0}
+          transition:slide={{ duration: 150 }}
+        >
+          <div>Augesählte Dateien:</div>
+          <div
+            class="ml-auto text-2xs text-white bg-gradient-to-b from-blue-400 to-blue-600 rounded-full px-2 py-0.5"
+            class:hidden={selectedFileCount === 0}
+          >
+            {#if selectedFileCount > 0}
+              {selectedFileCount}
+            {/if}
+          </div>
+        </div>
+        <button
+          class="menu-btn"
+          disabled={selectedFileCount === 0}
+          on:click={async () => {
+            if (type === "buzzer") {
+              addToast("CRC32 Update auf Buzzer wird derzeit nicht unterstützt.", "error");
+            } else {
+              const selectedFiles = $activeStore.filter((f) => f.selected);
+              for (const file of selectedFiles) {
+                await updateLocalAudioCrc(file.name);
+              }
+              await refreshLocal();
+              addToast(`CRC32-Prüfsumme${selectedFiles.length > 1 ? "n" : ""} von ${selectedFiles.length > 1 ? selectedFiles.length + " lokalen Dateien": "einer lokalen Datei"} aktualisiert.`, "success");
+            }
+            closeMenu();
+          }}
+          use:tooltip={{
+            text: "Berechnet die CRC32 des Audioanteils einer Datei und speichert sie in den Tags.",
+            position: "right",
+          }}
+        >
+          <FingerprintIcon class="btn-icon" />
+          CRC32 neu berechnen und speichern
+        </button>
+        <button
+          class="menu-btn danger"
+          disabled={selectedFileCount === 0}
+          on:click={() => {
+            if (type === "buzzer") {
+              deleteSelectedRemoteFiles();
+            } else {
+              deleteSelectedLocalFiles();
+            }
+            closeMenu();
+          }}
+        >
+          <TrashIcon class="btn-icon" />
+          Löschen
+        </button>
+      {/if}
+    </div>
+  </div>
+{/if}
+
+<style>
+  @reference "../styles/app.css";
+  .list_entry {
+    @apply py-2 px-4 border-border-card border-b-1 text-sm;
+  }
+  .menu-btn {
+    @apply w-full px-4 border-b border-b-border-card text-left text-sm flex items-center min-h-10;
+    &:not(:disabled):not(.danger) {
+      @apply hover:bg-surface-hover;
+    }
+
+    /* Spezifisches Styling für rote Aktions-Buttons (z.B. Löschen) */
+    &.danger:not(:disabled) {
+      @apply text-red-700 hover:bg-red-100;
+    }
+
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed grayscale;
+    }
+  }
+  :global(.btn-icon) {
+    @apply w-5 h-5 mr-2;
+  }
+</style>

webpage/src/components/FileTagEditor.svelte

@@ -0,0 +1,481 @@
+<script lang="ts">
+  import { updateFile } from "../lib/tagHandler";
+  import { refreshLocal, refreshRemote } from "../lib/sync";
+  import { fade, slide } from "svelte/transition";
+  import {
+    localAudioFiles,
+    buzzerAudioFiles,
+    fsInfo,
+    syncStateMap,
+  } from "../lib/store";
+  import { type MetadataTags, SyncState } from "../lib/types";
+  import {
+    XIcon,
+    CaretLeftIcon,
+    CaretRightIcon,
+    FloppyDiskIcon,
+    ArrowUUpLeftIcon,
+    CheckSquareIcon,
+    SquareIcon,
+    PencilIcon,
+  } from "phosphor-svelte";
+  import { addToast } from "../lib/toast";
+  import { tooltip } from "../lib/actions/tooltip";
+
+  export let show = false;
+  export let type: "local" | "buzzer" = "buzzer";
+  export let initialFileName: string | null = null;
+  export let onClose: () => void;
+
+  let drafts: Record<string, { newName: string; tags: MetadataTags }> = {};
+  let currentFileName = "";
+  let applyToBoth = false;
+  let isDropdownOpen = false;
+  let lastOpenedName: string | null = null;
+
+  $: autoApplyIcon = applyToBoth ? CheckSquareIcon : SquareIcon;
+  $: activeStore = type === "local" ? localAudioFiles : buzzerAudioFiles;
+  $: fileList = $activeStore || [];
+
+  $: if (show && initialFileName !== lastOpenedName) {
+    if (initialFileName) {
+      currentFileName = initialFileName;
+    } else if (fileList.length > 0) {
+      currentFileName = fileList[0].name;
+    }
+    lastOpenedName = initialFileName;
+  }
+
+  $: if (!show) {
+    lastOpenedName = null;
+  }
+
+  $: currentIndex = (fileList || []).findIndex((f) => f.name === currentFileName);
+  $: currentFile = fileList[currentIndex];
+  $: hasDraft = currentFile ? drafts[currentFile.name] !== undefined : false;
+  $: hasAnyDrafts = Object.keys(drafts).length > 0;
+
+  $: activeDraft = currentFile ? drafts[currentFile.name] : null;
+  $: activeTags = activeDraft ? activeDraft.tags : currentFile?.metaTags || {};
+  $: activeName = activeDraft ? activeDraft.newName : currentFile?.name || "";
+
+  $: syncStatus = (currentFileName && $syncStateMap[type]?.[currentFileName]) || { state: SyncState.UNKNOWN, linkedFiles: [] };
+  $: isDuplicate = syncStatus.state === SyncState.DUPLICATE;
+
+  $: if (isDuplicate) {
+    applyToBoth = false;
+  }
+
+  $: maxFilenameLength = $fsInfo ? $fsInfo.maxPathLength - $fsInfo.audioPath.length - 2 : 30;
+
+  function closeEditor() {
+    if (onClose) onClose();
+  }
+
+  function nextFile() {
+    if (currentIndex < fileList.length - 1) {
+      currentFileName = fileList[currentIndex + 1].name;
+      isDropdownOpen = false;
+    }
+  }
+
+  function prevFile() {
+    if (currentIndex > 0) {
+      currentFileName = fileList[currentIndex - 1].name;
+      isDropdownOpen = false;
+    }
+  }
+
+  function initDraftIfNeeded() {
+    if (!currentFile) return;
+    if (!drafts[currentFile.name]) {
+      drafts[currentFile.name] = {
+        newName: currentFile.name,
+        tags: { ...(currentFile.metaTags || {}) },
+      };
+    }
+  }
+
+  function updateTag(field: keyof MetadataTags, event: Event) {
+    initDraftIfNeeded();
+    if (currentFile) {
+      drafts[currentFile.name].tags[field] = (event.target as HTMLInputElement).value;
+      drafts = drafts;
+    }
+  }
+
+  function updateName(event: Event) {
+    initDraftIfNeeded();
+    if (currentFile) {
+      const inputEl = event.target as HTMLInputElement;
+      let val = inputEl.value.replace(/[^a-zA-Z0-9_\-\.]/g, "");
+      if (val.length > maxFilenameLength) val = val.substring(0, maxFilenameLength);
+      inputEl.value = val;
+      drafts[currentFile.name].newName = val;
+      drafts = drafts;
+    }
+  }
+
+  function resetCurrent() {
+    if (!currentFile) return;
+    delete drafts[currentFile.name];
+    drafts = drafts;
+  }
+
+  function resetAll() {
+    drafts = {};
+  }
+
+  async function saveCurrent() {
+    if (!currentFile || !drafts[currentFile.name]) return;
+    const draft = drafts[currentFile.name];
+    const oldName = currentFile.name;
+    const newName = draft.newName;
+
+    try {
+      await updateFile(oldName, newName, currentFile.sysTags, draft.tags, type, applyToBoth);
+      addToast(`Datei ${newName} gespeichert.`, "success");
+      delete drafts[oldName];
+      drafts = drafts;
+      if (oldName !== newName) currentFileName = newName;
+
+      if (applyToBoth) {
+        // Wenn auf beide angewendet, beide Seiten neu laden
+        await refreshLocal();
+        await refreshRemote();
+      } else {
+        // Ansonsten nur die aktive Seite
+        if (type === "local") await refreshLocal();
+        if (type === "buzzer") await refreshRemote();
+      }
+    } catch (error) {
+      addToast("Fehler beim Speichern.", "error");
+    }
+  }
+
+  async function saveAll() {
+    try {
+      let savedCount = 0;
+      for (const [oldName, draft] of Object.entries(drafts)) {
+        const file = fileList.find((f) => f.name === oldName);
+        if (file) {
+          await updateFile(oldName, draft.newName, file.sysTags, draft.tags, type, applyToBoth);
+          savedCount++;
+        }
+      }
+      drafts = {};
+      addToast(`${savedCount} Dateien gespeichert.`, "success");
+
+      if (applyToBoth) {
+        await refreshLocal();
+        await refreshRemote();
+      } else {
+        if (type === "local") await refreshLocal();
+        if (type === "buzzer") await refreshRemote();
+      }
+    } catch (error) {
+      addToast("Fehler beim Speichern.", "error");
+    }
+  }
+
+  function formatSize(bytes: number) {
+    return (bytes / 1024).toFixed(1) + "\u202FkB";
+  }
+
+  function clickOutside(node: HTMLElement) {
+    const handleClick = (event: MouseEvent) => {
+      if (!node.contains(event.target as Node) && !event.defaultPrevented) {
+        node.dispatchEvent(new CustomEvent("outclick"));
+      }
+    };
+    document.addEventListener("click", handleClick, true);
+    return {
+      destroy() {
+        document.removeEventListener("click", handleClick, true);
+      },
+    };
+  }
+
+  function getDropdownItemClass(fileName: string, current: string, currentDrafts: any): string {
+    const isChanged = !!currentDrafts[fileName];
+    const isSelected = fileName === current;
+    if (isChanged)
+      return isSelected
+        ? "bg-amber-50 hover:bg-amber-100 font-semibold"
+        : "bg-amber-50 hover:bg-amber-100";
+    return isSelected ? "font-semibold hover:bg-slate-100" : "bg-white hover:bg-slate-100";
+  }
+
+  function isTagChanged(
+    field: keyof MetadataTags,
+    currentDraftTags: MetadataTags,
+    originalFile: any,
+    draftExists: boolean,
+  ): boolean {
+    if (!draftExists || !originalFile) return false;
+    const orig = originalFile.metaTags?.[field];
+    const draft = currentDraftTags[field];
+    const origStr = Array.isArray(orig) ? orig.join(", ") : orig || "";
+    const draftStr = Array.isArray(draft) ? draft.join(", ") : draft || "";
+    return origStr !== draftStr;
+  }
+
+  function getInputClass(isChanged: boolean): string {
+    return isChanged
+      ? "border-amber-400 focus:border-amber-500 focus:ring-1 focus:ring-amber-500 bg-amber-50/50 text-amber-900"
+      : "border-border-card focus:border-on-surface focus:ring-1 focus:ring-on-surface";
+  }
+
+  function handleKeydown(event: KeyboardEvent) {
+    if (show && event.key === "Escape" && !isDropdownOpen) {
+      closeEditor();
+    }
+  }
+</script>
+
+<svelte:window on:keydown={handleKeydown} />
+
+{#if show && currentFile}
+  <!-- svelte-ignore a11y_click_events_have_key_events -->
+  <!-- svelte-ignore a11y_no_static_element_interactions -->
+  <div
+    class="w-full h-full bg-white flex flex-col rounded-b-lg shadow-sm overflow-hidden"
+    transition:fade={{ duration: 150 }}
+    on:click|stopPropagation
+  >
+    <div
+      class="flex items-center justify-between p-2 border-b border-border-card bg-gradient-to-b from-white {hasDraft
+        ? 'to-amber-100'
+        : 'to-slate-100'}"
+    >
+      <button class="nav-btn" on:click={prevFile} disabled={currentIndex === 0}>
+        <CaretLeftIcon class="w-5 h-5" />
+      </button>
+
+      <div
+        class="relative flex-1 px-2"
+        use:clickOutside
+        on:outclick={() => (isDropdownOpen = false)}
+      >
+        <button
+          class="w-full flex items-center justify-center gap-1.5 text-sm font-semibold cursor-pointer outline-none"
+          on:click={() => (isDropdownOpen = !isDropdownOpen)}
+        >
+          {#if hasDraft}<PencilIcon class="w-4 h-4 shrink-0 text-amber-700" />{/if}
+          <span class="truncate {hasDraft ? 'text-amber-800' : 'text-slate-800'}">
+            {activeName}
+          </span>
+        </button>
+
+        {#if isDropdownOpen}
+          <div
+            transition:slide={{ duration: 200 }}
+            class="absolute left-0 right-0 top-full mt-2 bg-white shadow-lg rounded-md border border-border-card max-h-64 overflow-y-auto z-50"
+          >
+            {#each fileList as file}
+              <button
+                class="w-full text-left px-3 py-2 text-sm transition-colors flex items-center gap-2 border-b border-border-card last:border-0 {getDropdownItemClass(
+                  file.name,
+                  currentFileName,
+                  drafts,
+                )}"
+                on:click={() => {
+                  currentFileName = file.name;
+                  isDropdownOpen = false;
+                }}
+              >
+                {#if drafts[file.name]}<PencilIcon class="w-4 h-4 shrink-0 text-amber-600" />
+                  <span class="truncate text-amber-800">{drafts[file.name].newName}</span>
+                {:else}<div class="w-4 h-4 shrink-0"></div>
+                  <span class="truncate text-slate-700">{file.name}</span>{/if}
+              </button>
+            {/each}
+          </div>
+        {/if}
+      </div>
+
+      <button class="nav-btn" on:click={nextFile} disabled={currentIndex === fileList.length - 1}>
+        <CaretRightIcon class="w-5 h-5" />
+      </button>
+      <button
+        class="ml-2 p-1.5 hover:bg-slate-200 rounded-full transition-colors"
+        on:click={closeEditor}
+      >
+        <XIcon class="w-5 h-5" />
+      </button>
+    </div>
+
+    <div class="flex-1 overflow-y-auto flex flex-col">
+      <div
+        class="px-4 py-3 bg-slate-50 border-b border-border-card flex flex-wrap gap-x-4 gap-y-1 text-xs text-slate-500 font-mono"
+      >
+        <div class="flex flex-col">
+          <span class="text-[10px] uppercase text-slate-400">Grösse</span>
+          <span>{formatSize(currentFile.size)}</span>
+        </div>
+        <div class="flex flex-col">
+          <span class="text-[10px] uppercase text-slate-400">CRC32</span>
+          <span>
+            {currentFile.sysTags?.crc32
+              ? `0x${currentFile.sysTags.crc32.toString(16).toUpperCase()}`
+              : "N/A"}
+          </span>
+        </div>
+        <div class="flex flex-col">
+          <span class="text-[10px] uppercase text-slate-400">Audio Codec</span>
+          <span>
+            {currentFile.sysTags?.format?.codec || "PCM"} / {currentFile.sysTags?.format
+              ?.sampleRate || "16000"}Hz
+          </span>
+        </div>
+      </div>
+
+      <div class="p-4 flex flex-col gap-3 {hasDraft ? 'bg-amber-50/50' : ''}">
+        <label class="flex flex-col gap-1">
+          <span class="text-xs font-semibold text-slate-600">Dateiname</span>
+          <input
+            type="text"
+            value={activeName}
+            on:input={updateName}
+            maxlength={maxFilenameLength}
+            class="editor-input {getInputClass(
+              hasDraft && activeName !== currentFile.name,
+            )}"
+          />
+        </label>
+        <label class="flex flex-col gap-1">
+          <span class="text-xs font-semibold text-slate-600">Titel</span>
+          <input
+            type="text"
+            value={activeTags.t || ""}
+            on:input={(e) => updateTag("t", e)}
+            class="editor-input {getInputClass(
+              isTagChanged('t', activeTags, currentFile, hasDraft),
+            )}"
+            placeholder="Titel..."
+          />
+        </label>
+        <label class="flex flex-col gap-1">
+          <span class="text-xs font-semibold text-slate-600">Autor</span>
+          <input
+            type="text"
+            value={activeTags.a || ""}
+            on:input={(e) => updateTag("a", e)}
+            class="editor-input {getInputClass(
+              isTagChanged('a', activeTags, currentFile, hasDraft),
+            )}"
+            placeholder="Autor..."
+          />
+        </label>
+        <label class="flex flex-col gap-1">
+          <span class="text-xs font-semibold text-slate-600">Tags/Kategorien</span>
+          <input
+            type="text"
+            value={Array.isArray(activeTags.c) ? activeTags.c.join(", ") : activeTags.c || ""}
+            on:input={(e) => updateTag("c", e)}
+            class="editor-input {getInputClass(
+              isTagChanged('c', activeTags, currentFile, hasDraft),
+            )}"
+            placeholder="Tags..."
+          />
+        </label>
+        <label class="flex flex-col gap-1">
+          <span class="text-xs font-semibold text-slate-600">Bemerkungen</span>
+          <textarea
+            value={activeTags.r || ""}
+            on:input={(e) => updateTag("r", e)}
+            class="editor-input resize-none h-20 {getInputClass(
+              isTagChanged('r', activeTags, currentFile, hasDraft),
+            )}"
+            placeholder="Infos..."
+          ></textarea>
+        </label>
+      </div>
+    </div>
+
+    <div class="flex flex-col border-t border-border-card bg-white mt-auto">
+      {#if hasAnyDrafts}
+        <div class="flex bg-amber-50">
+          <button
+            class="menu-btn !border-b-0 flex-1 text-amber-700 hover:bg-amber-100"
+            on:click={resetAll}
+          >
+            <ArrowUUpLeftIcon class="btn-icon" /> Alle zurück
+          </button>
+          <button
+            class="menu-btn !border-b-0 flex-1 border-l border-amber-200 text-amber-700 hover:bg-amber-100 font-semibold"
+            on:click={saveAll}
+          >
+            <FloppyDiskIcon class="btn-icon" /> Alle speichern
+          </button>
+        </div>
+        <div class="border-t border-amber-200"></div>
+      {/if}
+      <div class="flex">
+        <button class="menu-btn flex-1" disabled={!hasDraft} on:click={resetCurrent}>
+          <ArrowUUpLeftIcon class="btn-icon" /> Zurück
+        </button>
+        <button
+          class="menu-btn flex-1 border-l border-border-card font-semibold {hasDraft
+            ? 'text-blue-700'
+            : ''}"
+          disabled={!hasDraft}
+          on:click={saveCurrent}
+        >
+          <FloppyDiskIcon class="btn-icon" /> Speichern
+        </button>
+      </div>
+      <div
+        use:tooltip={{
+          text: "Diese Option ist deaktiviert, da ein Duplikat-Konflikt vorliegt. Lösen Sie den Konflikt, um Änderungen auf beiden Seiten anwenden zu können.",
+          pos: "top",
+          variant: "danger",
+          disabled: !isDuplicate,
+        }}
+        class:grayscale={isDuplicate}
+        class:cursor-not-allowed={isDuplicate}
+      >
+        <button
+          class="menu-btn bg-slate-50 hover:bg-slate-100 !justify-start text-slate-700 w-full"
+          on:click={() => (applyToBoth = !applyToBoth)}
+          disabled={isDuplicate}
+        >
+          <svelte:component
+            this={autoApplyIcon}
+            class="btn-icon {applyToBoth ? 'text-blue-600' : 'text-slate-400'}"
+          /> Auch {type === "buzzer" ? "lokal" : "auf dem Buzzer"} anwenden
+        </button>
+      </div>
+    </div>
+  </div>
+{/if}
+
+<style>
+  @reference "../styles/app.css";
+  .nav-btn {
+    @apply p-1.5 rounded-full transition-colors;
+    &:not(:disabled) {
+      @apply hover:bg-slate-200 cursor-pointer;
+    }
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed grayscale;
+    }
+  }
+  .editor-input {
+    @apply w-full px-3 py-2 text-sm bg-white border rounded shadow-sm outline-none transition-colors;
+  }
+  .menu-btn {
+    @apply w-full px-4 border-b border-border-card text-left text-xs sm:text-sm flex justify-center items-center min-h-10 transition-colors;
+    &:not(:disabled) {
+      @apply hover:bg-surface-hover cursor-pointer;
+    }
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed grayscale;
+    }
+  }
+  :global(.btn-icon) {
+    @apply w-4 h-4 mr-2 shrink-0;
+  }
+</style>

webpage/src/components/FileTransfer.svelte

@@ -1,27 +0,0 @@
-<script lang="ts">
-  import { storageUsage } from "../lib/store";
-</script>
-
-<div class="mt-4 w-full h-3 bg-slate-100 rounded-sm overflow-hidden flex shadow-inner">
-  <div
-    class="h-full bg-slate-400 transition-all duration-500"
-    style="width: {$storageUsage?.systemPercent ?? 0}%"
-  ></div>
-
-<div class="mt-1 text-xs text-slate-400 flex justify-between uppercase tracking-tighter font-medium">
-  {#if $storageUsage}
-    <div class="flex gap-4">
-      <div>
-        <span class="font-semibold text-slate-400">
-          Rate: {($storageUsage.systemBytes / 1048576).toFixed(2)} MB
-        </span>
-      </div>
-     <div>
-      <span class="font-semibold text-slate-400">
-        {($storageUsage.freeBytes / 1048576).toFixed(2)} Sekunden
-      </span>
-    </div>
-  {:else}
-    <div class="text-slate-400">Kein Transfer aktiv</div>
-  {/if}
-</div>

webpage/src/components/FlashUsage.svelte

@@ -2,39 +2,37 @@
   import { storageUsage } from "../lib/store";
 </script>
 
-<div class="mt-4 w-full h-3 bg-slate-100 rounded-sm overflow-hidden flex shadow-inner">
+<div class="w-full h-3 bg-slate-100 rounded-sm overflow-hidden flex shadow-inner shadow-sm">
   <div
-    class="h-full bg-slate-400 transition-all duration-500"
+    class="h-full bg-gradient-to-b from-slate-300 to-slate-400 transition-all duration-500"
     style="width: {$storageUsage?.systemPercent ?? 0}%"
   ></div>
 
   <div
-    class="h-full bg-indigo-500 transition-all duration-500"
+    class="h-full bg-gradient-to-b from-indigo-300 to-indigo-500 transition-all duration-500"
     style="width: {$storageUsage?.audioPercent ?? 0}%"
   ></div>
 
   <div
-    class="h-full bg-emerald-500 transition-all duration-500"
+    class="h-full bg-gradient-to-b from-emerald-300 to-emerald-500 transition-all duration-500"
     style="width: {$storageUsage?.freePercent ?? 0}%"
   ></div>
 </div>
 
-<div class="mt-1 text-xs text-slate-400 flex justify-between uppercase tracking-tighter font-medium">
+<div class="text-xs text-slate-400 flex justify-between">
   {#if $storageUsage}
     <div class="flex gap-4">
       <div>
         <span class="font-semibold text-slate-400">System:
-        {($storageUsage.systemBytes / 1048576).toFixed(2)} MB</span>
+        {($storageUsage.systemBytes / 1048576).toFixed(2)}&thinsp;MB</span>
-      </div>
-      <div>
         <span class="font-semibold text-indigo-500">Audio:
-        {($storageUsage.audioBytes / 1048576).toFixed(2)} MB</span>
+        {($storageUsage.audioBytes / 1048576).toFixed(2)}&thinsp;MB</span>
       </div>
     </div>
 
     <div>
       <span class="font-semibold text-emerald-500">Frei:
-      {($storageUsage.freeBytes / 1048576).toFixed(2)} MB</span>
+      {($storageUsage.freeBytes / 1048576).toFixed(2)}&thinsp;MB</span>
     </div>
   {:else}
     <div class="text-slate-400">Speicherdaten nicht verfügbar</div>

webpage/src/components/Header.svelte

@@ -0,0 +1,245 @@
+<script lang="ts">
+  import HeaderDeviceListItem from "./HeaderDeviceListItem.svelte";
+  import {
+    PlugsIcon,
+    PlugsConnectedIcon,
+    BluetoothIcon,
+    CaretDownIcon,
+    LinkIcon,
+    UsbIcon,
+    SquareIcon,
+    CheckSquareIcon,
+  } from "phosphor-svelte";
+  import { slide } from "svelte/transition";
+  import {
+    isConnected,
+    isConnecting,
+    availableDevices,
+    pairedDevices,
+    activeDeviceId,
+    autoConnect,
+    loadConnectionState,
+    fsInfo,
+  } from "../lib/store";
+  import {
+    connectBuzzer,
+    disconnectBuzzer,
+    pairBuzzer,
+    forgetDevice,
+    getPairedDevices,
+  } from "../lib/bluetooth";
+
+  let showDropdown = false;
+
+  $: lastDeviceId = loadConnectionState()?.deviceId;
+  $: targetDevice = $pairedDevices.find((d) => d.id === lastDeviceId);
+  $: canQuickConnect = targetDevice ? $availableDevices.has(targetDevice.id) : false;
+  $: autoConnectIcon = $autoConnect ? CheckSquareIcon : SquareIcon;
+
+  async function handleMainAction() {
+    showDropdown = false;
+    if ($isConnected) {
+      disconnectBuzzer();
+    } else if (canQuickConnect && targetDevice) {
+      await connectBuzzer(targetDevice);
+    } else {
+      await pairBuzzer();
+    }
+  }
+
+  function clickOutside(node: HTMLElement) {
+    const handleClick = (event: MouseEvent) => {
+      if (!node.contains(event.target as Node) && !event.defaultPrevented) {
+        node.dispatchEvent(new CustomEvent("outclick"));
+      }
+    };
+
+    document.addEventListener("click", handleClick, true);
+
+    return {
+      destroy() {
+        document.removeEventListener("click", handleClick, true);
+      },
+    };
+  }
+</script>
+
+<header
+  class="fixed top-0 left-0 w-full h-16 bg-surface-card border-b border-border-card z-50
+    flex items-center justify-between px-4 lg:px-8 bg-gradient-to-b from-white to-slate-100"
+>
+  <div class="flex items-center">
+    <span class="text-2xl uppercase text-brand">
+      <span class="font-extrabold">Edis&nbsp;Buzzer</span>
+      &nbsp;
+      <span class="font-light">CONTROL</span>
+    </span>
+  </div>
+
+  <div
+    class="relative"
+    class:disabled={$isConnecting}
+    use:clickOutside
+    on:outclick={() => (showDropdown = false)}
+  >
+    <div
+      class="btn-connect-group"
+      class:connected={$isConnected}
+      class:last-available={!$isConnected && canQuickConnect}
+      class:last-unavailable={!$isConnected && !canQuickConnect}
+    >
+      <button class="btn-main" on:click={handleMainAction} disabled={$isConnecting}>
+        {#if $isConnected}
+          <PlugsIcon weight="fill" class="w-4 h-4" />
+          <span class="hidden sm:inline">Trennen</span>
+        {:else if canQuickConnect}
+          <PlugsConnectedIcon weight="fill" class="w-4 h-4" />
+          <span class="hidden sm:inline">Verbinden</span>
+        {:else}
+          <LinkIcon weight="bold" class="w-4 h-4" />
+          <span class="hidden sm:inline">Neues Gerät</span>
+        {/if}
+      </button>
+
+      <button
+        class="btn-dropdown"
+        on:click={() => (showDropdown = !showDropdown)}
+        disabled={$isConnecting}
+      >
+        <CaretDownIcon
+          weight="bold"
+          class="w-4 h-4 transition-transform duration-300 {showDropdown ? '-scale-y-100' : ''}"
+        />
+      </button>
+    </div>
+
+    {#if showDropdown}
+      <div
+        transition:slide={{ duration: 300 }}
+        class="absolute right-0 top-12 bg-surface-card shadow-xl rounded-lg border border-border-card p-0 z-50 overflow-hidden
+        w-max max-w-[calc(100vw-2rem)] sm:max-w-md min-w-[16rem]"
+      >
+        {#each $pairedDevices as dev (dev.id)}
+          <HeaderDeviceListItem
+            device={dev}
+            name={dev.name || ""}
+            isConnected={$activeDeviceId === dev.id}
+            isLastConnectedDevice={lastDeviceId === dev.id}
+            isAvailable={$availableDevices.has(dev.id)}
+            onConnect={(device) => {
+              connectBuzzer(device);
+              showDropdown = false;
+            }}
+            onForget={(device) => forgetDevice(device)}
+          />
+        {/each}
+
+        {#if $pairedDevices.length === 0}
+          <div
+            class="px-4 py-3 text-xs text-text-muted text-center italic border-b border-border-card"
+          >
+            Keine Geräte gekoppelt
+          </div>
+        {/if}
+
+        <div
+          class="flex-1 pr-3 pl-4 py-1 flex items-center menu-connect relative before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1"
+        >
+          <button
+            class="flex items-center w-full text-left"
+            on:click={() => {
+              pairBuzzer();
+              showDropdown = false;
+            }}
+          >
+            <LinkIcon weight="bold" class="mr-2 w-5 h-5" />
+            <div class="flex-1">
+              <div class="flex flex-col">
+                <span class="py-2">
+                  Buzzer über Bluetooth <BluetoothIcon weight="bold" class="w-4 h-4 flex inline" /> verbinden
+                </span>
+              </div>
+            </div>
+          </button>
+        </div>
+        <div
+          class="flex-1 pr-3 pl-4 py-1 flex items-center menu-connect relative before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1"
+        >
+          <button class="flex items-center w-full text-left">
+            <LinkIcon weight="bold" class="mr-2 w-5 h-5 opacity-50" />
+            <div class="flex-1 opacity-50">
+              <div class="flex flex-col">
+                <span class="py-2">
+                  Buzzer über USB <UsbIcon weight="bold" class="w-4 h-4 flex inline" /> verbinden
+                </span>
+              </div>
+            </div>
+          </button>
+        </div>
+        <div
+          class="flex-1 pr-3 pl-4 py-1 flex items-center menu-auto relative before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1"
+        >
+          <button
+            class="flex items-center w-full text-left"
+            on:click={() => ($autoConnect = !$autoConnect)}
+          >
+            <svelte:component this={autoConnectIcon} class="mr-2 w-5 h-5" />
+            <div class="flex-1">
+              <div class="flex flex-col">
+                <span class="py-2">Automatisch verbinden</span>
+              </div>
+            </div>
+          </button>
+        </div>
+      </div>
+    {/if}
+  </div>
+</header>
+
+<style>
+  @reference "../styles/app.css";
+
+  .connected {
+    @apply border-border-card;
+  }
+
+  .connected .btn-main,
+  .connected .btn-dropdown {
+    @apply bg-gradient-to-b from-white to-slate-200 hover:from-slate-100 hover:to-slate-300;
+  }
+
+  .last-available,
+  .last-unavailable {
+    @apply border-transparent;
+  }
+
+  .last-available .btn-main,
+  .last-available .btn-dropdown {
+    @apply bg-gradient-to-b from-emerald-500 to-emerald-600 hover:from-emerald-600 hover:to-emerald-700  text-white;
+  }
+
+  .last-unavailable .btn-main,
+  .last-unavailable .btn-dropdown {
+    @apply bg-gradient-to-b from-indigo-400 to-indigo-600 hover:from-indigo-400 hover:to-indigo-700 text-white;
+  }
+
+  .btn-connect-group {
+    @apply flex items-stretch rounded-full overflow-hidden shadow-sm;
+  }
+
+  .btn-main {
+    @apply flex items-center gap-2 p-2 text-sm font-semibold transition-colors outline-none cursor-pointer disabled:opacity-50;
+  }
+
+  .btn-dropdown {
+    @apply flex items-center justify-center px-2 py-2 transition-colors outline-none cursor-pointer disabled:opacity-50;
+  }
+
+  .menu-connect {
+    @apply text-blue-700 hover:bg-surface-hover font-semibold border-b last:border-b-0 border-border-card cursor-pointer;
+  }
+
+  .menu-auto {
+    @apply hover:bg-surface-hover font-semibold border-b last:border-b-0 border-border-card cursor-pointer;
+  }
+</style>

webpage/src/components/HeaderDeviceListItem.svelte

@@ -0,0 +1,68 @@
+<!-- HeaderDeviceListItem.svelte -->
+<script lang="ts">
+  import { BluetoothIcon, BluetoothSlashIcon, LinkBreakIcon } from "phosphor-svelte";
+
+  export let device: any = null;
+  export let isAvailable: boolean = false;
+  export let isLastConnectedDevice: boolean = false;
+  export let isConnected: boolean = false;
+  export let name: string = "";
+  export let type: string = "ble";
+  
+  export let onConnect: (device: any) => void;
+  export let onForget: (device: any) => void;
+
+  let isHovered = false;
+</script>
+
+<div
+  class="flex-1 pr-3 pl-4 py-1 flex items-center relative
+    border-b border-border-card
+    before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1
+    {isAvailable || isConnected ? '' : 'text-text-muted cursor-not-allowed'}
+    {isConnected && isLastConnectedDevice ? 'bg-bg-selected ' : ''}
+    {isAvailable && !isConnected ? 'hover:bg-surface-hover' : ''}
+    {isLastConnectedDevice ? 'before:bg-border-selected' : ''}
+  "
+>
+  <button
+    class="flex-1 flex items-center text-left min-2-0"
+    on:click={() => onConnect(device)}
+    disabled={!isAvailable || isConnected}
+  >
+    {#if type === "ble"}
+      {#if isAvailable || isConnected}
+        <BluetoothIcon class="text-blue-600 mr-2 w-5 h-5" />
+      {:else}
+        <BluetoothSlashIcon class="mr-2 w-5 h-5" />
+      {/if}
+    {/if}
+
+    <div class="flex-1 min-w-0">
+      <div class="flex flex-col">
+        <span class="font-medium text-sm truncate">
+          {name || "Unbekanntes Gerät"}
+        </span>
+        {#if isConnected}
+          <span class="text-xs font-semibold">Verbunden</span>
+        {:else if isAvailable}
+          <span class="text-xs">In Reichweite</span>
+        {:else if !isAvailable}
+          <span class="text-xs">Nicht in Reichweite</span>
+        {/if}
+      </div>
+    </div>
+  </button>
+  <button
+    on:mouseenter={() => (isHovered = true)}
+    on:mouseleave={() => (isHovered = false)}
+    on:click|stopPropagation={() => onForget(device)}
+    title="'{name}' entfernen"
+    class="flex-shrink-0"
+  >
+    <LinkBreakIcon
+      weight={isHovered ? "bold" : "regular"}
+      class="w-7 h-7 p-1 ml-3 rounded text-red-600 hover:bg-red-600 hover:text-white"
+    />
+  </button>
+</div>

webpage/src/components/MainGrid.svelte

@@ -0,0 +1,170 @@
+<script lang="ts">
+  import { isConnected, fsInfo, tagEditorState } from "../lib/store";
+  import { GearIcon, CloudArrowUpIcon, DotsThreeVerticalIcon } from "phosphor-svelte";
+  import FileList from "./FileList.svelte";
+  import DeviceInfo from "./DeviceInfo.svelte";
+  import { refreshRemote } from "../lib/sync";
+  import { transferStats, isTransferingRemote, pairedDevices, activeDeviceId } from "../lib/store";
+  import { SETTINGS } from "../lib/settings";
+  import TransferProgress from "./TransferProgress.svelte";
+  import FileMenuOverlay from "./FileMenuOverlay.svelte";
+  import FileTagEditor from "./FileTagEditor.svelte";
+  import FileListMenu from "./FileListMenu.svelte";
+  import AudioDropzone from "./AudioDropzone.svelte";
+
+  let showOverlay = false;
+  let isTransferFinished = false;
+  let overlayTimeout: ReturnType<typeof setTimeout>;
+  let showLocalMenu = false;
+  let showBuzzerMenu = false;
+  let editModeType: "local" | "buzzer" | null = null;
+  let fileToEdit: string | null = null;
+  let isFileDragOver = false;
+
+  $: currentDevice = $pairedDevices.find((d) => d.id === $activeDeviceId);
+
+  $: if ($isConnected) {
+    refreshRemote();
+  }
+
+  $: if ($isTransferingRemote && $transferStats.overallTotal > 0) {
+    // Transfer startet oder läuft
+    showOverlay = true;
+    isTransferFinished = false;
+    clearTimeout(overlayTimeout);
+  } else if (showOverlay && !$isTransferingRemote && $transferStats.overallDone > 0) {
+    // Transfer wurde soeben abgeschlossen
+    isTransferFinished = true;
+    overlayTimeout = setTimeout(closeOverlay, SETTINGS.ui.transferOverlayPersistMs);
+  }
+
+  function closeOverlay() {
+    clearTimeout(overlayTimeout);
+    showOverlay = false;
+    isTransferFinished = false;
+    // Optional: resetTransferStats() aufrufen, um die Werte zu nullen
+  }
+
+  export function openTagEditor(type: "local" | "buzzer", fileName: string) {
+    editModeType = type;
+    fileToEdit = fileName;
+  }
+
+  function formatTime(seconds: number): string {
+    if (!isFinite(seconds) || seconds < 0) return "∞";
+    const m = Math.floor(seconds / 60);
+    const s = Math.floor(seconds % 60);
+    return `${m.toString().padStart(2, "0")}:${s.toString().padStart(2, "0")} Min.`;
+  }
+</script>
+
+<div class="main-layout mt-16 lg:mt-20 pb-12">
+  <AudioDropzone />
+
+  <section class="buzzer-card flex flex-col">
+    <div class="card-header">
+      <h3 class="card-title">
+        {#if $isConnected && currentDevice?.name}
+          Geräteinfos: <span class="font-normal">{currentDevice.name}</span>
+        {/if}
+      </h3>
+      <button class="btn" aria-label="Einstellungen" disabled={!$isConnected}>
+        <GearIcon class="icon" />
+      </button>
+    </div>
+
+    <div class="relative overflow-hidden h-full">
+      <div class="card-body transition-all duration-500 h-full" class:disconnected={!$isConnected}>
+        <DeviceInfo />
+      </div>
+      <TransferProgress />
+    </div>
+  </section>
+
+  <section class="buzzer-card relative self-start">
+    <div class="card-header">
+      <h3 class="card-title">Lokale Bibliothek</h3>
+      <FileListMenu type="local" onToggleMenu={() => (showLocalMenu = !showLocalMenu)} />
+    </div>
+    <div class="grid">
+      <div class="col-start-1 row-start-1">
+        <div class="card-body">
+          <FileList type="local" />
+        </div>
+      </div>
+
+      <div
+        class="col-start-1 row-start-1 z-30"
+        class:hidden={!$tagEditorState.show || $tagEditorState.type !== "local"}
+      >
+        <FileTagEditor
+          type="local"
+          show={$tagEditorState.show && $tagEditorState.type === "local"}
+          initialFileName={$tagEditorState.fileName}
+          onClose={() => tagEditorState.set({ show: false, type: "local", fileName: "" })}
+        />
+      </div>
+
+      <div class="col-start-1 row-start-1 z-20" class:pointer-events-none={!showLocalMenu}>
+        <FileMenuOverlay
+          type="local"
+          show={showLocalMenu}
+          onClose={() => (showLocalMenu = false)}
+        />
+      </div>
+    </div>
+  </section>
+
+  <section class="buzzer-card relative self-start">
+    <div class="card-header">
+      <h3 class="card-title">
+        Gerätebibliothek <span class="text-text-muted text-xs font-mono">
+          {$fsInfo?.audioPath}
+        </span>
+      </h3>
+      <FileListMenu type="buzzer" onToggleMenu={() => (showBuzzerMenu = !showBuzzerMenu)} />
+    </div>
+    <div class="grid">
+      <div class="col-start-1 row-start-1">
+        <div class="card-body" class:disconnected={!$isConnected}>
+          <FileList type="buzzer" />
+        </div>
+      </div>
+
+      <div
+        class="col-start-1 row-start-1 z-30"
+        class:hidden={!$tagEditorState.show || $tagEditorState.type !== "buzzer"}
+      >
+        <FileTagEditor
+          type="buzzer"
+          show={$tagEditorState.show && $tagEditorState.type === "buzzer"}
+          initialFileName={$tagEditorState.fileName}
+          onClose={() => tagEditorState.set({ show: false, type: "buzzer", fileName: "" })}
+        />
+      </div>
+      <div class="col-start-1 row-start-1 z-20" class:pointer-events-none={!showBuzzerMenu}>
+        <FileMenuOverlay
+          type="buzzer"
+          show={showBuzzerMenu}
+          onClose={() => (showBuzzerMenu = false)}
+        />
+      </div>
+    </div>
+  </section>
+</div>
+
+<style>
+  @reference "../styles/app.css";
+  .btn {
+    @apply rounded-full transition-colors border-0;
+
+    &:not(:disabled) {
+      @apply hover:bg-slate-200 hover:shadow-sm;
+    }
+
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed;
+    }
+  }
+</style>

webpage/src/components/ToastContainer.svelte

@@ -7,12 +7,12 @@
   $: console.debug("Aktuelle Toasts im Store:", $toasts);
 </script>
 
-<div class="fixed bottom-20 right-6 z-[9999] flex flex-col gap-3 pointer-events-none">
+<div class="fixed bottom-6 right-6 z-[9999] flex flex-col gap-3 pointer-events-none">
   {#each $toasts as toast (toast.id)}
     <div
       in:fly={{ y: 20, duration: 300 }}
       out:fly={{ y: -20, duration: 300 }}
-      class="pointer-events-auto flex items-center justify-between px-5 py-3 rounded-lg border-l-4 shadow-xl min-w-[280px]
+      class="pointer-events-auto flex items-center justify-between px-5 py-3 rounded-lg border-l-4 shadow-xl min-w-[280px] backdrop-blur-sm
             {toast.type === 'success' ? 'bg-green-100/50 border-green-500 text-green-800' : ''}
             {toast.type === 'info' ? 'bg-blue-100/50 border-blue-500 text-blue-800' : ''}
             {toast.type === 'warning' ? 'bg-amber-100/50 border-amber-500 text-amber-800' : ''}

webpage/src/components/Tooltip.svelte

@@ -0,0 +1,51 @@
+<script lang="ts">
+  let { 
+    text = "", 
+    position = 'top',
+    variant = 'default' 
+  } = $props();
+
+  let x = $state(-999);
+  let y = $state(-999);
+  let visible = $state(false);
+
+  export function setPosition(newX: number, newY: number) {
+    x = newX;
+    y = newY;
+    visible = true;
+  }
+
+  export function hideTooltip() {
+    visible = false;
+  }
+
+  // Svelte 5 Reaktivität für dynamische Klassen basierend auf dem Typ
+  let containerClass = $derived(
+    variant === 'warning' ? 'bg-amber-700' :
+    variant === 'danger' ? 'bg-red-700' :
+    'bg-slate-700' // default
+  );
+
+  let arrowClass = $derived(
+    variant === 'warning' ? 'bg-amber-700' :
+    variant === 'danger' ? 'bg-red-700' :
+    'bg-slate-700' // default
+  );
+</script>
+
+<div
+  class="fixed z-[9999] pointer-events-none transition-opacity duration-200 {visible ? 'opacity-100' : 'opacity-0'}"
+  style="left: {x}px; top: {y}px;"
+>
+  <div class="relative text-xs text-white px-2 py-1 rounded shadow-xl max-w-xs {containerClass}">
+    
+    {@html text}
+
+    <div class="absolute w-2 h-2 rotate-45 {arrowClass}
+      {position === 'top' ? 'bottom-[-4px] left-1/2 -translate-x-1/2' : ''}
+      {position === 'bottom' ? 'top-[-4px] left-1/2 -translate-x-1/2' : ''}
+      {position === 'left' ? 'right-[-4px] top-1/2 -translate-y-1/2' : ''}
+      {position === 'right' ? 'left-[-4px] top-1/2 -translate-y-1/2' : ''}"
+    ></div>
+  </div>
+</div>

webpage/src/components/TransferProgress.svelte

@@ -0,0 +1,106 @@
+<script lang="ts">
+  import { fade } from 'svelte/transition';
+  import { XIcon } from "phosphor-svelte";
+  import { isTransferingRemote, transferStats, transferDetails } from '../lib/store';
+  import { SETTINGS } from '../lib/settings';
+
+  let showOverlay = false;
+  let isTransferFinished = false;
+  let overlayTimeout: ReturnType<typeof setTimeout>;
+
+  $: if ($isTransferingRemote && $transferStats.overallTotal > 0) {
+    showOverlay = true;
+    isTransferFinished = false;
+    clearTimeout(overlayTimeout);
+  } else if (showOverlay && !$isTransferingRemote && $transferStats.overallDone > 0) {
+    isTransferFinished = true;
+    overlayTimeout = setTimeout(closeOverlay, SETTINGS.ui.transferOverlayPersistMs);
+  }
+
+  function closeOverlay() {
+    clearTimeout(overlayTimeout);
+    showOverlay = false;
+    isTransferFinished = false;
+  }
+
+  function formatTime(seconds: number): string {
+    if (!isFinite(seconds) || seconds < 0) return "Berechne...";
+    const m = Math.floor(seconds / 60);
+    const s = Math.floor(seconds % 60);
+    return `${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')} Min.`;
+  }
+</script>
+
+{#if showOverlay}
+  <div
+    class="absolute inset-0 z-10 bg-white/95 backdrop-blur-[2px] p-4 flex flex-col justify-end"
+    transition:fade={{ duration: 300 }}
+  >
+    {#if isTransferFinished}
+      <button
+        class="absolute top-2 right-2 p-1 text-slate-400 hover:text-slate-700 transition-colors"
+        on:click={closeOverlay}
+        aria-label="Overlay schließen"
+      >
+        <XIcon class="w-5 h-5" />
+      </button>
+    {/if}
+
+    <div class="w-full flex flex-col gap-1">
+      
+      <div class="flex flex-col gap-1">
+        <div class="relative w-full h-3 bg-slate-100 rounded-sm overflow-hidden shadow-inner shadow-sm">
+          <div
+            class="absolute top-0 left-0 h-full bg-gradient-to-b from-indigo-300 to-indigo-500"
+            style="width: {$transferDetails.filePercent}%; transition: {$transferDetails.filePercent === 0 ? 'none' : `width ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+          ></div>
+          <div class="absolute inset-0 flex items-center justify-center text-[10px] text-slate-500">
+            {$transferDetails.filePercent}%
+          </div>
+          <div
+            class="absolute inset-0 flex items-center justify-center text-[10px] text-white"
+            style="clip-path: inset(0 {100 - $transferDetails.filePercent}% 0 0); transition: {$transferDetails.filePercent === 0 ? 'none' : `clip-path ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+          >
+            {$transferDetails.filePercent}%
+          </div>
+        </div>
+        <div class="flex justify-between text-[10px] px-1">
+          <span class="truncate max-w-[60%]">{$transferStats.currentFileName || "Lade..."}</span>
+          <span>{formatTime($transferDetails.fileEta)}</span>
+        </div>
+      </div>
+
+      <div class="flex flex-col gap-1">
+        <div class="relative w-full h-3 bg-slate-100 rounded-sm overflow-hidden shadow-inner shadow-sm">
+          <div
+            class="absolute top-0 left-0 h-full bg-gradient-to-b from-indigo-300 to-indigo-500"
+            style="width: {$transferDetails.totalPercent}%; transition: {$transferDetails.totalPercent === 0 ? 'none' : `width ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+          ></div>
+          <div class="absolute inset-0 flex items-center justify-center text-[10px] text-slate-500">
+            {$transferDetails.totalPercent}%
+          </div>
+          <div
+            class="absolute inset-0 flex items-center justify-center text-[10px] text-white"
+            style="clip-path: inset(0 {100 - $transferDetails.totalPercent}% 0 0); transition: {$transferDetails.totalPercent === 0 ? 'none' : `clip-path ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+          >
+            {$transferDetails.totalPercent}%
+          </div>
+        </div>
+        <div class="flex justify-between text-[10px] px-1">
+          <span>{$transferDetails.speedKbs} kB/s</span>
+          <span>{formatTime($transferDetails.totalEta)}</span>
+        </div>
+      </div>
+
+      <div class="flex justify-center mt-1">
+        <button
+          class="px-4 py-1.5 text-xs font-semibold text-red-600 bg-red-50 hover:bg-red-100 rounded-md transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
+          disabled={true}
+        >
+          Transfer abbrechen
+        </button>
+      </div>
+      
+    </div>
+  </div>
+{/if}

webpage/src/layouts/MainLayout.astro

@@ -1,29 +1,30 @@
 ---
-import "../styles/global.css";
+import "../styles/app.css";
-const year = new Date().getFullYear();
 ---
 
+<!-- MainLayout.astro -->
 <html lang="de">
     <head>
         <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <link
+            rel="icon"
+            type="image/png"
+            href={`${import.meta.env.BASE_URL}favicon-96x96.png`}
+            sizes="96x96"
+        />
+        <link rel="icon" type="image/svg+xml" href={`${import.meta.env.BASE_URL}favicon.svg`} />
+        <link rel="shortcut icon" href={`${import.meta.env.BASE_URL}favicon.ico`} />
+        <link
+            rel="apple-touch-icon"
+            sizes="180x180"
+            href={`${import.meta.env.BASE_URL}apple-touch-icon.png`}
+        />
+        <meta name="apple-mobile-web-app-title" content="Edis Buzzer" />
+        <link rel="manifest" href={`${import.meta.env.BASE_URL}site.webmanifest`} />
         <title>Edis Buzzer</title>
     </head>
-    
+    <body class="bg-surface text-on-surface antialiased transition-colors duration-300">
-    <body class="antialiased bg-slate-50 text-primary pt-16 pb-12">
+        <slot />
-
-        <nav class="fixed top-0 left-0 w-full z-50 bg-white shadow-bottom px-4 py-3 h-16 flex items-center">
-            <span class="uppercase font-bold text-xl tracking-narrow font-mono italic">EDIS_BUZZER</span>
-        </nav>
-
-        <main class="mx-auto max-w-screen-lg px-4 py-8 w-full">
-            <slot />
-        </main>
-
-        <footer class="fixed bottom-0 left-0 w-full z-50 bg-white text-xs text-slate-500 h-12 flex items-center shadow-top">
-            <div class="mx-auto px-4 w-full text-center">
-                &copy; 2026-{year} iten engineering. Alle Rechte vorbehalten.
-            </div>
-        </footer>
-
     </body>
 </html>

webpage/src/lib/actions/clickOutside.ts

@@ -0,0 +1,23 @@
+export function clickOutside(node: HTMLElement, callback: () => void) {
+  const handleClick = (event: MouseEvent | TouchEvent) => {
+    // Prüfen, ob der Klick auf ein Element außerhalb des Containers erfolgte
+    if (node && !node.contains(event.target as Node) && !event.defaultPrevented) {
+      callback();
+    }
+  };
+
+  // Event-Listener in der Capture-Phase hinzufügen (true)
+  document.addEventListener('click', handleClick, true);
+  document.addEventListener('touchstart', handleClick, { passive: true, capture: true });
+
+  return {
+    update(newCallback: () => void) {
+      callback = newCallback;
+    },
+    destroy() {
+      // Event-Listener beim Zerstören der Komponente entfernen
+      document.removeEventListener('click', handleClick, true);
+      document.removeEventListener('touchstart', handleClick, true);
+    }
+  };
+}

webpage/src/lib/actions/tooltip.ts

@@ -0,0 +1,99 @@
+import Tooltip from "../../components/Tooltip.svelte";
+import { mount, unmount } from "svelte";
+
+// Typisierung um 'variant' erweitert
+export interface TooltipOptions {
+  text: string;
+  pos?: "top" | "bottom" | "left" | "right";
+  variant?: "default" | "warning" | "danger";
+}
+
+export function tooltip(node: HTMLElement, options: TooltipOptions) {
+  let tooltipInstance: any = null;
+  let container: HTMLElement | null = null;
+  let isHovered = false;
+
+  const show = () => {
+    isHovered = true;
+    if (!options.text) return;
+
+    container = document.createElement('div');
+    document.body.appendChild(container);
+
+    tooltipInstance = mount(Tooltip, {
+      target: container,
+      props: { 
+        text: options.text, 
+        position: options.pos || "top",
+        variant: options.variant || "default" // Übergabe an die Komponente
+      }
+    });
+
+    requestAnimationFrame(() => {
+      if (!isHovered || !container || !tooltipInstance) return;
+      
+      const tooltipEl = container.firstElementChild as HTMLElement;
+      if (!tooltipEl) return;
+
+      const nodeRect = node.getBoundingClientRect();
+      const tooltipRect = tooltipEl.getBoundingClientRect();
+      const gap = 8;
+      let x = 0, y = 0;
+
+      if (options.pos === "right") {
+        x = nodeRect.right + gap;
+        y = nodeRect.top + nodeRect.height / 2 - tooltipRect.height / 2;
+      } else if (options.pos === "left") {
+        x = nodeRect.left - tooltipRect.width - gap;
+        y = nodeRect.top + nodeRect.height / 2 - tooltipRect.height / 2;
+      } else if (options.pos === "bottom") {
+        x = nodeRect.left + nodeRect.width / 2 - tooltipRect.width / 2;
+        y = nodeRect.bottom + gap;
+      } else { 
+        x = nodeRect.left + nodeRect.width / 2 - tooltipRect.width / 2;
+        y = nodeRect.top - tooltipRect.height - gap;
+      }
+      
+      tooltipInstance.setPosition(x, y);
+    });
+  };
+
+  const hide = () => {
+    isHovered = false;
+    
+    if (tooltipInstance) {
+      tooltipInstance.hideTooltip();
+      
+      const instanceToRemove = tooltipInstance;
+      const containerToRemove = container;
+      
+      tooltipInstance = null;
+      container = null;
+
+      setTimeout(() => {
+        try {
+          unmount(instanceToRemove);
+          if (containerToRemove) containerToRemove.remove();
+        } catch (e) {
+          console.warn("[Tooltip Action] Cleanup Fehler", e);
+        }
+      }, 200);
+    }
+  };
+
+  node.addEventListener("mouseenter", show);
+  node.addEventListener("mouseleave", hide);
+  node.addEventListener("mousedown", hide);
+
+  return {
+    update(newOptions: TooltipOptions) { 
+      options = newOptions; 
+    },
+    destroy() {
+      hide();
+      node.removeEventListener("mouseenter", show);
+      node.removeEventListener("mouseleave", hide);
+      node.removeEventListener("mousedown", hide);
+    }
+  };
+}

webpage/src/lib/audioProcessor.ts

@@ -0,0 +1,131 @@
+export interface AudioProcessingOptions {
+  lowCut: boolean;
+  lowCutFreq: number;
+  compress: boolean;
+  compressorThreshold: number;
+  compressorRatio: number;
+  compressorKnee: number;
+  compressorAttack: number;
+  compressorRelease: number;
+  normalize: boolean;
+  normalizeTargetDb: number;
+}
+
+export const DEFAULT_AUDIO_OPTIONS: AudioProcessingOptions = {
+  lowCut: true,
+  lowCutFreq: 150,
+  compress: true,
+  compressorThreshold: -45, // Drastisch gesenkt: Erfasst auch sehr leises Flüstern
+  compressorRatio: 8,       // Starke Kompression (8:1)
+  compressorKnee: 10,       // Härterer Übergang (Hard Knee), damit der Kompressor direkter zupackt
+  compressorAttack: 0.005,  // Etwas langsamer (5ms), lässt die initialen Konsonanten für die Sprachverständlichkeit durch
+  compressorRelease: 0.15,  // Schnelleres Release (150ms), zieht leise Passagen zwischen Wörtern schneller hoch
+  normalize: true,
+  normalizeTargetDb: -0.5,
+};
+
+/**
+ * Konvertiert Float32 Samples (-1.0 bis 1.0) in Int16 PCM (-32768 bis 32767)
+ */
+function floatToInt16(float32Data: Float32Array): Int16Array {
+  const int16Data = new Int16Array(float32Data.length);
+  for (let i = 0; i < float32Data.length; i++) {
+    // Hard-Clipping verhindern, falls Signale leicht übersteuern
+    const s = Math.max(-1, Math.min(1, float32Data[i]));
+    int16Data[i] = s < 0 ? s * 0x8000 : s * 0x7FFF;
+  }
+  return int16Data;
+}
+
+/**
+ * Führt eine Peak-Normalisierung basierend auf einem dBFS-Zielwert durch.
+ */
+function applyNormalization(buffer: AudioBuffer, targetDb: number) {
+  const data = buffer.getChannelData(0);
+  let maxPeak = 0;
+
+  // 1. Höchsten absoluten Peak finden
+  for (let i = 0; i < data.length; i++) {
+    const absValue = Math.abs(data[i]);
+    if (absValue > maxPeak) maxPeak = absValue;
+  }
+
+  // 2. Multiplikator berechnen und anwenden
+  if (maxPeak > 0) {
+    const targetLinear = Math.pow(10, targetDb / 20);
+    const factor = targetLinear / maxPeak;
+    
+    for (let i = 0; i < data.length; i++) {
+      data[i] *= factor;
+    }
+  }
+}
+
+export async function processAudioFile(
+  file: File,
+  // Partial bedeutet: Es müssen nicht alle Felder übergeben werden
+  userOptions: Partial<AudioProcessingOptions> = {} 
+): Promise<{ buffer: ArrayBuffer; name: string }> {
+  
+  // Fügt die Standardwerte mit den User-Werten zusammen. 
+  // Was der User nicht mitschickt, wird durch Defaults aufgefüllt.
+  const options = { ...DEFAULT_AUDIO_OPTIONS, ...userOptions };
+  
+  // Cast auf ArrayBuffer, um TypeScript bzgl. SharedArrayBuffer zu beruhigen
+  const rawArrayBuffer = await file.arrayBuffer() as ArrayBuffer;
+  
+  const audioCtx = new window.AudioContext();
+  const sourceBuffer = await audioCtx.decodeAudioData(rawArrayBuffer);
+
+  // Ziel-Kontext: Exakt 16kHz, Mono (1 Kanal), Länge berechnet aus Originaldauer
+  const offlineCtx = new window.OfflineAudioContext(1, sourceBuffer.duration * 16000, 16000);
+
+  const source = offlineCtx.createBufferSource();
+  source.buffer = sourceBuffer;
+
+  let lastNode: AudioNode = source;
+
+  // 1. Low-Cut Filter (Highpass)
+  if (options.lowCut) {
+    const filter = offlineCtx.createBiquadFilter();
+    filter.type = "highpass";
+    // Jetzt ist options.lowCutFreq garantiert eine Zahl
+    filter.frequency.setValueAtTime(options.lowCutFreq, offlineCtx.currentTime);
+    lastNode.connect(filter);
+    lastNode = filter;
+  }
+
+  // 2. Dynamics Compressor
+  if (options.compress) {
+    const compressor = offlineCtx.createDynamicsCompressor();
+    // Hier knallt es nicht mehr, weil options.compressorThreshold existiert
+    compressor.threshold.setValueAtTime(options.compressorThreshold, offlineCtx.currentTime);
+    compressor.knee.setValueAtTime(options.compressorKnee, offlineCtx.currentTime);
+    compressor.ratio.setValueAtTime(options.compressorRatio, offlineCtx.currentTime);
+    compressor.attack.setValueAtTime(options.compressorAttack, offlineCtx.currentTime);
+    compressor.release.setValueAtTime(options.compressorRelease, offlineCtx.currentTime);
+    
+    lastNode.connect(compressor);
+    lastNode = compressor;
+  }
+  console.log("AudioProcessor: Audioeffekte angewendet", { options });
+  // Kette abschließen und Rendering starten
+  lastNode.connect(offlineCtx.destination);
+  source.start(0);
+
+  const renderedBuffer = await offlineCtx.startRendering();
+
+  // 3. Normalisierung 
+  if (options.normalize) {
+    applyNormalization(renderedBuffer, options.normalizeTargetDb);
+  }
+
+  // 4. In Zielformat (16-bit PCM) wandeln
+  const pcm16 = floatToInt16(renderedBuffer.getChannelData(0));
+
+  return {
+    buffer: pcm16.buffer as ArrayBuffer,
+    // Original-Dateiendung entfernen
+    name: file.name.replace(/\.[^/.]+$/, "")
+  };
+}

webpage/src/lib/bluetooth.ts

@@ -1,5 +1,5 @@
 import { get } from 'svelte/store';
-import { injectDummyDevices, isConnected, isPaired, isConnecting, pairedDevices, availableDevices, activeDeviceId, saveConnectionState, loadConnectionState, targetDeviceId, resetLocal, resetRemote } from './store';
+import { isConnected, isPaired, isConnecting, pairedDevices, availableDevices, activeDeviceId, saveConnectionState, loadConnectionState, targetDeviceId, resetLocal, resetRemote, autoConnect } from './store';
 import { BLE } from './protocol/constants';
 import { parseIncomingFrame } from './protocol';
 import { registerTransport, handleTransportDisconnect, handleTransportConnect } from './transport';
@@ -9,27 +9,25 @@ import { SETTINGS } from './settings';
 let rxCharacteristic: BluetoothRemoteGATTCharacteristic | null = null;
 let txCharacteristic: BluetoothRemoteGATTCharacteristic | null = null;
 let device: BluetoothDevice | null = null;
+let writeQueue = Promise.resolve();
 
 export async function restoreSession() {
     try {
         const devices = await getPairedDevices();
         if (devices.length > 0) {
             isPaired.set(true);
-            startScanningAdvertisements(devices);
 
+            // Zuerst das Zielgerät definieren
             const savedState = loadConnectionState();
-            if (savedState && savedState.autoConnect && savedState.transport === 'ble') {
+            if (savedState) {
-                const targetDev = devices.find(d => d.id === savedState.deviceId);
-                if (targetDev) {
-                    addToast("Versuche automatische Wiederverbindung...", "info");
-                    await connectBuzzer(targetDev);
-                }
-            } else if (savedState) {
                 targetDeviceId.set(savedState.deviceId);
                 device = devices.find(d => d.id === savedState.deviceId) || devices[0];
             } else {
                 device = devices[0];
             }
+
+            // Danach das Scanning starten (die Auto-Connect-Logik liegt nun in den Callbacks)
+            startScanningAdvertisements(devices);
         }
     } catch (error) {
         console.error("Session-Wiederherstellung fehlgeschlagen:", error);
@@ -38,19 +36,24 @@ export async function restoreSession() {
 
 async function startScanningAdvertisements(devices: BluetoothDevice[]) {
     for (const dev of devices) {
-        // Sicherheits-Check für Mock-Objekte
         if (typeof dev.addEventListener !== 'function') continue;
 
-        dev.addEventListener('advertisementreceived', () => {
+        dev.addEventListener('advertisementreceived', async () => {
+            // Gerät als verfügbar markieren
             availableDevices.update(set => {
                 const newSet = new Set(set);
                 newSet.add(dev.id);
                 return newSet;
             });
+
+            // Auto-Connect ausführen, sobald das Gerät funkt und falls die Voraussetzungen stimmen
+            if (get(autoConnect) && get(targetDeviceId) === dev.id && !get(isConnected) && !get(isConnecting)) {
+                console.debug("Auto-Connect: Gerät in Reichweite, starte Verbindung.");
+                await connectBuzzer(dev);
+            }
         });
 
         try {
-            // Auch hier vorher prüfen
             if (typeof dev.watchAdvertisements === 'function') {
                 await dev.watchAdvertisements();
             }
@@ -201,22 +204,17 @@ export async function forgetDevice(targetDevice: BluetoothDevice) {
 export async function getPairedDevices() {
     let rawDevices: BluetoothDevice[] = [];
 
-    // 1. Physische Geräte abrufen, falls die API verfügbar ist
     if ('bluetooth' in navigator && 'getDevices' in navigator.bluetooth) {
         try {
             rawDevices = await navigator.bluetooth.getDevices();
         } catch (error) {
             console.error("Fehler beim Abrufen der gekoppelten Geräte:", error);
         }
+        console.log("Bluetooth-Devices", rawDevices);
     }
 
-    // 2. Physische Geräte in den Store schreiben
     pairedDevices.set(rawDevices);
 
-    // 3. Testdaten anfügen
-    injectDummyDevices();
-
-    // 4. Den aktualisierten Store-Inhalt (inkl. Dummies) für die weiterverarbeitenden Funktionen zurückgeben
     return get(pairedDevices);
 }
 
@@ -226,7 +224,7 @@ function handleDisconnect() {
     if (get(isConnected)) {
         addToast("Verbindung zu Buzzer verloren", "warning");
     }
-
+    writeQueue = Promise.resolve();
     resetRemote();
     registerTransport(null);
     rxCharacteristic = null;
@@ -240,8 +238,15 @@ function handleIncomingData(event: Event) {
     }
 }
 
-export async function sendBleFrame(buffer: ArrayBuffer) {
+export function sendBleFrame(buffer: ArrayBuffer): Promise<void> {
     // TODO: MTU Check einfügen!
-    if (!rxCharacteristic) return;
+    if (!rxCharacteristic) return Promise.resolve();
-    await rxCharacteristic.writeValueWithoutResponse(buffer);
+
+    writeQueue = writeQueue.then(() => 
+        rxCharacteristic!.writeValueWithoutResponse(buffer)
+    ).catch(error => {
+        console.error("BLE Sende-Fehler:", error);
+    });
+
+    return writeQueue;
 }

webpage/src/lib/db.ts

@@ -0,0 +1,147 @@
+// src/lib/db.ts
+
+const DB_NAME = 'BuzzerDB';
+const STORE_NAME = 'localAudio';
+
+function initDB(): Promise<IDBDatabase> {
+    return new Promise((resolve, reject) => {
+        const request = indexedDB.open(DB_NAME, 1);
+
+        request.onupgradeneeded = () => {
+            const db = request.result;
+            if (!db.objectStoreNames.contains(STORE_NAME)) {
+                // Der Dateiname fungiert als eindeutiger Schlüssel
+                db.createObjectStore(STORE_NAME, { keyPath: 'name' });
+            }
+        };
+
+        request.onsuccess = () => resolve(request.result);
+        request.onerror = () => reject(request.error);
+    });
+}
+
+export async function saveLocalFile(name: string, blob: Blob, size: number): Promise<void> {
+    const db = await initDB();
+    return new Promise((resolve, reject) => {
+        const tx = db.transaction(STORE_NAME, 'readwrite');
+        const store = tx.objectStore(STORE_NAME);
+
+        // Speichert das Blob zusammen mit Metadaten
+        store.put({ name, blob, size, timestamp: Date.now() });
+
+        tx.oncomplete = () => resolve();
+        tx.onerror = () => reject(tx.error);
+    });
+}
+
+export async function getLocalFiles(): Promise<any[]> {
+    const db = await initDB();
+    return new Promise((resolve, reject) => {
+        const tx = db.transaction(STORE_NAME, 'readonly');
+        const store = tx.objectStore(STORE_NAME);
+        const request = store.getAll();
+
+        request.onsuccess = () => resolve(request.result);
+        request.onerror = () => reject(request.error);
+    });
+}
+
+export async function deleteLocalFile(name: string): Promise<void> {
+    const db = await initDB();
+    return new Promise((resolve, reject) => {
+        const tx = db.transaction(STORE_NAME, 'readwrite');
+        const store = tx.objectStore(STORE_NAME);
+
+        const request = store.delete(name);
+
+        request.onsuccess = () => resolve();
+        request.onerror = () => reject(request.error);
+    });
+}
+
+export async function getLocalFile(name: string): Promise<{ name: string, blob: Blob, size: number } | undefined> {
+    const db = await initDB();
+    return new Promise((resolve, reject) => {
+        const tx = db.transaction(STORE_NAME, 'readonly');
+        const store = tx.objectStore(STORE_NAME);
+        const request = store.get(name);
+
+        request.onsuccess = () => resolve(request.result);
+        request.onerror = () => reject(request.error);
+    });
+}
+
+let currentSource: AudioBufferSourceNode | null = null;
+
+export async function playLocalFile(name: string): Promise<void> {
+    // Falls bereits etwas spielt: Stoppen und aufräumen
+    if (currentSource) {
+        try {
+            currentSource.stop();
+        } catch (e) {
+            // Ignorieren, falls die Quelle bereits natürlich gestoppt war
+        }
+        currentSource = null;
+    }
+
+    const fileEntry = await getLocalFile(name);
+    if (!fileEntry) throw new Error('Datei nicht gefunden');
+
+    const fullBuffer = await fileEntry.blob.arrayBuffer();
+    let audioByteLength = fullBuffer.byteLength;
+
+    // Metadaten-Limit berechnen (Footer an EOF - 8)
+    if (fullBuffer.byteLength >= 8) {
+        const view = new DataView(fullBuffer);
+        const footerOffset = fullBuffer.byteLength - 8;
+        const magic = new TextDecoder().decode(new Uint8Array(fullBuffer, footerOffset + 4, 4));
+        
+        if (magic === "TAG!") {
+            const totalTagSize = view.getUint16(footerOffset, true); //
+            if (totalTagSize <= fullBuffer.byteLength) {
+                audioByteLength = fullBuffer.byteLength - totalTagSize;
+            }
+        }
+    }
+
+    const numSamples = Math.floor(audioByteLength / 2);
+    const int16Data = new Int16Array(fullBuffer, 0, numSamples);
+
+    const audioCtx = new (window.AudioContext || window.webkitAudioContext)();
+    const audioBuffer = audioCtx.createBuffer(1, numSamples, 16000);
+    const float32Data = audioBuffer.getChannelData(0);
+
+    for (let i = 0; i < numSamples; i++) {
+        float32Data[i] = int16Data[i] / 32768.0;
+    }
+
+    const source = audioCtx.createBufferSource();
+    source.buffer = audioBuffer;
+    source.connect(audioCtx.destination);
+    
+    // Referenz speichern, bevor wir starten
+    currentSource = source;
+
+    // Wenn die Datei natürlich endet, Referenz löschen
+    source.onended = () => {
+        if (currentSource === source) {
+            currentSource = null;
+        }
+    };
+
+    source.start();
+}
+
+export async function downloadLocalFile(name: string): Promise<void> {
+    const fileEntry = await getLocalFile(name);
+    if (!fileEntry) throw new Error('Datei nicht gefunden');
+
+    const url = URL.createObjectURL(fileEntry.blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = name + ".buzz";
+    document.body.appendChild(a);
+    a.click();
+    document.body.removeChild(a);
+    URL.revokeObjectURL(url);
+}

webpage/src/lib/init.ts

@@ -1,5 +1,6 @@
 // src/lib/init.ts
 import { isBluetoothSupported, isSerialSupported, isInitializing } from './store';
+import { refreshLocal } from './sync';
 
 export function getBrowserName(): string {
     const ua = navigator.userAgent;
@@ -20,5 +21,8 @@ export function performHardwareCheck() {
 
     isBluetoothSupported.set(hasBT);
     isSerialSupported.set(hasSerial);
-    isInitializing.set(false);
+    
+    refreshLocal().then(() => {
+        isInitializing.set(false);
+    });
 }

webpage/src/lib/protocol/constants.ts

@@ -10,11 +10,13 @@ export const FRAME = {
     RESPONSE: 0x10,
     ACK: 0x11,
     ERROR: 0x12,
+    SUCCESS: 0x13,
 
     FILE_START: 0x20,
     FILE_CHUNK: 0x21,
     FILE_END: 0x22,
 
+
     LS_START: 0x40,
     LS_ENTRY: 0x41,
     LS_END: 0x42,
@@ -22,11 +24,14 @@ export const FRAME = {
 
 export const DATA = {
     PROTO_INFO: 0x01,
+    DEVICE_INFO: 0x02,
     FS_INFO: 0x03,
+    FW_INFO: 0x04,
 
     FILE_GET: 0x20,
     FILE_PUT: 0x21,
-
+    TAGS_GET: 0x22,
+    TAGS_PUT: 0x23,
 
     LS: 0x40
 };
@@ -54,3 +59,10 @@ export const ZEPHYR_ERRORS: Record<number, ZephyrError> = {
     88: { text: "Funktion im Buzzer nicht implementiert", zephyr: "ENOSYS" },
     134: { text: "Operation nicht unterstützt", zephyr: "ENOTSUP" }
 };
+
+export const FW_STATUS = {
+    CONFIRMED: 0x00,
+    PENDING: 0x01,
+    TESTING: 0x02,
+    UNKNOWN: 0xFF,
+}

webpage/src/lib/protocol/crc32.ts

@@ -0,0 +1,16 @@
+const CRC32_TABLE = new Int32Array(256);
+for (let i = 0; i < 256; i++) {
+    let c = i;
+    for (let j = 0; j < 8; j++) {
+        c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
+    }
+    CRC32_TABLE[i] = c;
+}
+
+export function crc32(buffer: Uint8Array, previousCrc = 0): number {
+    let crc = previousCrc ^ -1;
+    for (let i = 0; i < buffer.length; i++) {
+        crc = (crc >>> 8) ^ CRC32_TABLE[(crc ^ buffer[i]) & 0xFF];
+    }
+    return (crc ^ -1) >>> 0; // Rückgabe als unsigned 32-bit
+}

webpage/src/lib/protocol/parser.ts

@@ -1,14 +1,24 @@
 import { FRAME, DATA, ZEPHYR_ERRORS } from './constants';
-import { protocolInfo, fsInfo } from '../store';
+import { protocolInfo, deviceInfo, fsInfo, transferStats, fwInfo, resetTransferStats, transferDetails } from '../store';
 import { addToast } from '../toast';
+import { SETTINGS } from '../settings';
+import { crc32 } from './crc32';
+import { get } from 'svelte/store';
+import { saveLocalFile } from '../db';
+import { refreshLocal } from '../sync';
+import { file } from 'astro:schema';
+
+let lastUiUpdate = 0;
+let currentFileCrc32 = 0;
 
 export type FrameSender = (buffer: ArrayBuffer) => Promise<void>;
 
 let lsBuffer: any[] = [];
+let fileChunks: Uint8Array[] = [];
 let lsTimeout: ReturnType<typeof setTimeout> | null = null;
 let lsResolve: ((data: any[]) => void) | null = null;
 let lsReject: ((error: Error) => void) | null = null;
-let fileGetResolve: ((success: boolean) => void) | null = null;
+let fileGetResolve: ((result: { success: boolean, blob?: Blob }) => void) | null = null;
 let fileGetReject: ((error: Error) => void) | null = null;
 
 export function showErrorToast(errorCode: number) {
@@ -38,20 +48,42 @@ export function parseIncomingFrame(view: DataView, sender: FrameSender) {
     switch (frameType) {
         case FRAME.RESPONSE:
             const dataType = view.getUint8(3);
-
+            switch (dataType) {
-            if (dataType === DATA.PROTO_INFO && payloadLength >= 5) {
+                case DATA.PROTO_INFO:
-                const version = view.getUint16(4, true);
+                    const version = view.getUint16(4, true);
-                const maxChunkSize = view.getUint16(6, true);
+                    const maxChunkSize = view.getUint16(6, true);
-                protocolInfo.set({ version, maxChunkSize });
+                    protocolInfo.set({ version, maxChunkSize });
-            } else if (dataType === DATA.FS_INFO && payloadLength >= 14) {
+                    break;
-                const totalSizeBytes = view.getUint32(4, true);
+                case DATA.FS_INFO:
-                const freeSizeBytes = view.getUint32(8, true);
+                    const totalSizeBytes = view.getUint32(4, true);
-                const maxPathLength = view.getUint8(12);
+                    const freeSizeBytes = view.getUint32(8, true);
-                const sysPathLength = view.getUint8(13);
+                    const maxPathLength = view.getUint8(12);
-                const audioPathLength = view.getUint8(14);
+                    const sysPathLength = view.getUint8(13);
-                const sysPath = new TextDecoder().decode(new Uint8Array(view.buffer, 15, sysPathLength));
+                    const audioPathLength = view.getUint8(14);
-                const audioPath = new TextDecoder().decode(new Uint8Array(view.buffer, 15 + sysPathLength, audioPathLength));
+                    const sysPath = new TextDecoder().decode(new Uint8Array(view.buffer, 15, sysPathLength));
-                fsInfo.set({ totalSize: totalSizeBytes / 1024 / 1024, freeSize: freeSizeBytes / 1024 / 1024, maxPathLength, sysPath, audioPath });
+                    const audioPath = new TextDecoder().decode(new Uint8Array(view.buffer, 15 + sysPathLength, audioPathLength));
+                    fsInfo.set({ totalSize: totalSizeBytes / 1024 / 1024, freeSize: freeSizeBytes / 1024 / 1024, maxPathLength, sysPath, audioPath });
+                    break;
+                case DATA.DEVICE_INFO:
+                    const deviceId = [0, 2, 4, 6]
+                        .map(offset => view.getUint16(4 + offset, false).toString(16).padStart(4, '0').toUpperCase())
+                        .join('-');
+                    const boardNameLength = view.getUint8(12);
+                    const boardRevisionLength = view.getUint8(13);
+                    const socNameLength = view.getUint8(14);
+                    const boardName = new TextDecoder().decode(new Uint8Array(view.buffer, 15, boardNameLength));
+                    const boardRevision = new TextDecoder().decode(new Uint8Array(view.buffer, 15 + boardNameLength, boardRevisionLength));
+                    const socName = new TextDecoder().decode(new Uint8Array(view.buffer, 15 + boardNameLength + boardRevisionLength, socNameLength));
+                    deviceInfo.set({ deviceId, boardName, boardRevision, socName });
+                    break;
+                case DATA.FW_INFO:
+                    const fwStatus = view.getUint8(4);
+                    const slot1Size = view.getUint32(5, true);
+                    const fw_version_length = view.getUint8(9);
+                    const kernel_version_length = view.getUint8(10);
+                    const fwVersion = new TextDecoder().decode(new Uint8Array(view.buffer, 11, fw_version_length));
+                    const kernelVersion = new TextDecoder().decode(new Uint8Array(view.buffer, 11 + fw_version_length, kernel_version_length));
+                    fwInfo.set({ fwStatus, slot1Size, fwVersion, kernelVersion });
             }
             break;
 
@@ -78,26 +110,40 @@ export function parseIncomingFrame(view: DataView, sender: FrameSender) {
         case FRAME.LS_END:
             if (lsTimeout) clearTimeout(lsTimeout);
             const total = view.getUint32(3, true);
-            console.debug(`LS Stream beendet. Erwartete Einträge: ${total}, empfangen: ${lsBuffer.length}`, lsBuffer);
             if (total !== lsBuffer.length) {
                 console.warn(`LS Stream: Erwartete Anzahl Einträge laut Header: ${total}, tatsächlich empfangen: ${lsBuffer.length}`);
                 addToast(`Warnung: LS Stream erwartete ${total} Einträge, aber nur ${lsBuffer.length} empfangen.`, 'warning');
             } else if (lsResolve) {
-                lsResolve([...lsBuffer]);
+                const currentResolve = lsResolve;
                 lsResolve = null;
                 lsReject = null;
+                currentResolve([...lsBuffer]);
             }
             break;
 
-case FRAME.FILE_START:
+        case FRAME.FILE_START:
-            fileTransfer.totalBytes = view.getUint32(3, true);
+            currentFileCrc32 = 0;
-            fileTransfer.receivedBytes = 0;
+            const totalBytes = view.getUint32(3, true);
-            fileTransfer.lastReceivedBytes = 0;
+            const nowStart = performance.now();
-            fileTransfer.stalledSeconds = 0;
+            fileChunks = [];
-            fileTransfer.active = true;
-            fileTransfer.startTime = performance.now();
 
-            console.log(`[FILE_GET] Stream gestartet. Erwartete Größe: ${fileTransfer.totalBytes} Bytes.`);
+            if (fileTransfer.mode === 'file') {
+                transferStats.update(s => ({
+                    ...s,
+                    bytesTotal: totalBytes,
+                    bytesDone: 0,
+                    currentFileName: s.pendingFileName || s.currentFileName,
+                    fileStartTime: nowStart,
+                    bulkStartTime: s.bulkStartTime === 0 ? nowStart : s.bulkStartTime
+                }));
+            }
+
+            // Parser-interne Metriken (Watchdog etc.)
+            fileTransfer.totalBytes = totalBytes;
+            fileTransfer.receivedBytes = 0;
+            fileTransfer.active = true;
+            fileTransfer.startTime = nowStart;
+            lastUiUpdate = 0;
 
             fileTransfer.metricsTimer = setInterval(() => {
                 if (!fileTransfer.active) return;
@@ -112,29 +158,21 @@ case FRAME.FILE_START:
                         if (fileTransfer.metricsTimer) clearInterval(fileTransfer.metricsTimer);
                         fileTransfer.active = false;
 
-                        // Hier optional einen Toast anzeigen lassen, falls importiert:
+                        addToast("Dateitransfer abgebrochen (Timeout)", "error");
-                        // addToast("Dateitransfer abgebrochen (Timeout)", "error");
 
-                        if (fileGetReject) {
+                        const currentReject = fileGetReject;
-                            fileGetReject(new Error("Timeout beim Dateitransfer"));
+                        fileGetResolve = null;
-                            fileGetResolve = null;
+                        fileGetReject = null;
-                            fileGetReject = null;
+
+                        if (currentReject) {
+                            currentReject(new Error("Timeout beim Dateitransfer"));
                         }
                         return;
                     }
                 } else {
-                    // Daten fließen -> Watchdog zurücksetzen
                     fileTransfer.stalledSeconds = 0;
                     fileTransfer.lastReceivedBytes = fileTransfer.receivedBytes;
                 }
-
-                const elapsedSec = (performance.now() - fileTransfer.startTime) / 1000;
-                const speedKB = (fileTransfer.receivedBytes / 1024) / elapsedSec;
-                const percent = fileTransfer.totalBytes > 0 
-                    ? ((fileTransfer.receivedBytes / fileTransfer.totalBytes) * 100).toFixed(1) 
-                    : "0.0";
-                    
-                console.log(`[FILE_GET] Fortschritt: ${percent}% | Speed: ${speedKB.toFixed(2)} KB/s`);
             }, 1000);
 
             // Initiale Credits (z.B. 64)
@@ -145,37 +183,105 @@ case FRAME.FILE_START:
         case FRAME.FILE_CHUNK:
             if (!fileTransfer.active) break;
 
+            const chunkData = new Uint8Array(view.buffer, 3, payloadLength);
+            currentFileCrc32 = crc32(chunkData, currentFileCrc32);
+            fileChunks.push(new Uint8Array(chunkData));
+
+            const previousReceived = fileTransfer.receivedBytes;
             fileTransfer.receivedBytes += payloadLength;
             fileTransfer.credits--;
 
-            // Nachladen, sobald die Credits auf 32 fallen (Dein Vorschlag)
+            if (fileTransfer.mode === 'file') {
+                const nowChunk = performance.now();
+                if (nowChunk - lastUiUpdate > SETTINGS.ui.transferUpdateIntervalMs) {
+                    const delta = fileTransfer.receivedBytes - previousReceived;
+
+                    transferStats.update(s => ({
+                        ...s,
+                        bytesDone: fileTransfer.receivedBytes,
+                        overallDone: s.overallDone + (fileTransfer.receivedBytes - s.bytesDone)
+                    }));
+                    lastUiUpdate = nowChunk;
+                }
+            }
+
             if (fileTransfer.credits <= 64) {
                 fileTransfer.credits = 128;
                 sendCredits(fileTransfer.credits, sender);
-
             }
             break;
 
         case FRAME.FILE_END:
-            if (fileTransfer.metricsTimer) {
+            if (fileTransfer.mode === 'file') {
-                clearInterval(fileTransfer.metricsTimer);
+                transferStats.update(s => ({
-                fileTransfer.metricsTimer = null;
+                    ...s,
+                    bytesDone: s.bytesTotal,
+                }));
             }
+            if (fileTransfer.metricsTimer) clearInterval(fileTransfer.metricsTimer);
             fileTransfer.active = false;
 
-            const crc32 = view.getUint32(3, true);
+            const buzzerCrc32 = view.getUint32(3, true);
+
             const totalElapsed = (performance.now() - fileTransfer.startTime) / 1000;
             const avgSpeed = (fileTransfer.receivedBytes / 1024) / totalElapsed;
 
-            console.log(`[FILE_GET] Stream beendet.`);
+            if (currentFileCrc32 === buzzerCrc32) {
-            console.log(`[FILE_GET] Empfangen: ${fileTransfer.receivedBytes} Bytes in ${totalElapsed.toFixed(2)}s.`);
+                const fileBlob = new Blob(fileChunks, { type: 'application/octet-stream' });
-            console.log(`[FILE_GET] Durchschnitt: ${avgSpeed.toFixed(2)} KB/s`);
-            console.log(`[FILE_GET] Zephyr CRC32: 0x${crc32.toString(16).toUpperCase().padStart(8, '0')}`);
 
-            if (fileGetResolve) {
+                if (fileTransfer.mode === 'file') {
-                fileGetResolve(true);
+                    const fileName = get(transferStats).currentFileName;
+                    const currentResolve = fileGetResolve;
+                    const currentReject = fileGetReject;
+
+                    // Direkt hier aufräumen, um Race Conditions bei schnellen Folge-Transfers zu vermeiden
+                    fileGetResolve = null;
+                    fileGetReject = null;
+
+                    saveLocalFile(fileName, fileBlob, fileTransfer.totalBytes)
+                        .then(() => {
+                            refreshLocal();
+                            if (currentResolve) {
+                                currentResolve({ success: true });
+                            }
+                        })
+                        .catch(err => {
+                            console.error("Datenbankfehler:", err);
+                            addToast(`Speichern von ${fileName} fehlgeschlagen.`, 'error');
+                            if (currentReject) currentReject(err);
+                        });
+                } else {
+                    // TAGS Modus: Blob direkt zurückgeben, nichts speichern
+                    const currentResolve = fileGetResolve;
+                    fileGetResolve = null;
+                    fileGetReject = null;
+                    if (currentResolve) currentResolve({ success: true, blob: fileBlob });
+                }
+            } else {
+                console.error("[CRC] Mismatch! Datei beschädigt.");
+                addToast("CRC Fehler: Datei wurde fehlerhaft übertragen.", "error");
+                const currentReject = fileGetReject;
                 fileGetResolve = null;
                 fileGetReject = null;
+                if (currentReject) currentReject(new Error("CRC Mismatch"));
+            }
+            break;
+
+        case FRAME.ACK:
+            if (uploadState.active && payloadLength >= 2) {
+                const creditsAdded = view.getUint16(3, true);
+                uploadState.credits += creditsAdded;
+                if (uploadState.onCreditsAdded) {
+                    uploadState.onCreditsAdded();
+                }
+            }
+
+        case FRAME.SUCCESS:
+            if (payloadLength >= 1) {
+                const successDataType = view.getUint8(3);
+                if (uploadState.active && successDataType === DATA.FILE_PUT || successDataType === DATA.TAGS_PUT) {
+                    if (uploadState.onSuccess) uploadState.onSuccess();
+                }
             }
             break;
 
@@ -184,16 +290,21 @@ case FRAME.FILE_START:
             console.error(`Received error frame with code: 0x${errorCode.toString(16)}`);
             showErrorToast(errorCode);
             if (lsReject) {
-                lsReject(new Error(`Buzzer Error 0x${errorCode.toString(16)}`));
+                const currentReject = lsReject;
                 lsResolve = null;
                 lsReject = null;
+                currentReject(new Error(`Buzzer Error 0x${errorCode.toString(16)}`));
             }
             if (fileGetReject && fileTransfer.active) {
                 if (fileTransfer.metricsTimer) clearInterval(fileTransfer.metricsTimer);
                 fileTransfer.active = false;
-                fileGetReject(new Error(`Buzzer Error 0x${errorCode.toString(16)}`));
+                const currentReject = fileGetReject;
                 fileGetResolve = null;
                 fileGetReject = null;
+                currentReject(new Error(`Buzzer Error 0x${errorCode.toString(16)}`));
+            }
+            if (uploadState.active && uploadState.onError) {
+                uploadState.onError(new Error(`Buzzer Error 0x${errorCode.toString(16)}`));
             }
             break;
 
@@ -214,6 +325,17 @@ export function buildProtocolInfoRequest(): ArrayBuffer {
     return buffer;
 }
 
+export function buildDeviceInfoRequest(): ArrayBuffer {
+    const buffer = new ArrayBuffer(4);
+    const view = new DataView(buffer);
+
+    view.setUint8(0, FRAME.REQUEST);
+    view.setUint16(1, 1, true);
+    view.setUint8(3, DATA.DEVICE_INFO);
+
+    return buffer;
+}
+
 export function buildFSInfoRequest(): ArrayBuffer {
     const buffer = new ArrayBuffer(4);
     const view = new DataView(buffer);
@@ -225,6 +347,17 @@ export function buildFSInfoRequest(): ArrayBuffer {
     return buffer;
 }
 
+export function buildFWInfoRequest(): ArrayBuffer {
+    const buffer = new ArrayBuffer(4);
+    const view = new DataView(buffer);
+
+    view.setUint8(0, FRAME.REQUEST);
+    view.setUint16(1, 1, true);
+    view.setUint8(3, DATA.FW_INFO);
+
+    return buffer;
+}
+
 export function buildLSRequest(path: string): ArrayBuffer {
     const encoder = new TextEncoder();
     const pathBytes = encoder.encode(path);
@@ -250,7 +383,6 @@ async function sendCredits(count: number, send: FrameSender) {
     const buffer = new ArrayBuffer(5);
     const view = new DataView(buffer);
 
-    console.debug(`Sende ${count} Credits für Stream...`);
     view.setUint8(0, FRAME.ACK);
     view.setUint16(1, 2, true);
     view.setUint16(3, count, true);
@@ -264,9 +396,10 @@ function resetLsWatchdog() {
         addToast("Verzeichnis-Streaming abgebrochen (Timeout)", "warning");
         lsBuffer = [];
         if (lsReject) {
-            lsReject(new Error("Timeout beim Lesen des Verzeichnisses"));
+            const currentReject = lsReject;
             lsResolve = null;
             lsReject = null;
+            currentReject(new Error("Timeout beim Lesen des Verzeichnisses"));
         }
     }, 3000);
 }
@@ -278,18 +411,32 @@ export function setLsResolver(resolve: (data: any[]) => void, reject: (error: Er
 
 const fileTransfer = {
     active: false,
+    mode: 'file' as 'file' | 'tags',
     startTime: 0,
     totalBytes: 0,
     receivedBytes: 0,
-    lastReceivedBytes: 0, // NEU: Für die Timeout-Berechnung
+    lastReceivedBytes: 0,
-    stalledSeconds: 0,    // NEU: Zähler für Stillstand
+    stalledSeconds: 0,
     credits: 0,
     metricsTimer: null as ReturnType<typeof setInterval> | null
 };
 
-export function setFileGetResolver(resolve: (success: boolean) => void, reject: (error: Error) => void) {
+export const uploadState = {
+    active: false,
+    credits: 0,
+    onCreditsAdded: null as (() => void) | null,
+    onSuccess: null as (() => void) | null,
+    onError: null as ((err: Error) => void) | null,
+};
+
+export function setFileGetResolver(
+    resolve: (result: { success: boolean, blob?: Blob }) => void,
+    reject: (error: Error) => void,
+    mode: 'file' | 'tags' = 'file' // Standard ist 'file'
+) {
     fileGetResolve = resolve;
     fileGetReject = reject;
+    fileTransfer.mode = mode;
 }
 
 export function buildFileGetRequest(path: string): ArrayBuffer {
@@ -307,3 +454,19 @@ export function buildFileGetRequest(path: string): ArrayBuffer {
 
     return buffer;
 }
+
+export function buildTagsGetRequest(path: string): ArrayBuffer {
+    const encoder = new TextEncoder();
+    const pathBytes = encoder.encode(path);
+    const buffer = new ArrayBuffer(4 + pathBytes.length);
+    const view = new DataView(buffer);
+
+    view.setUint8(0, FRAME.REQUEST);
+    view.setUint16(1, 1 + pathBytes.length, true);
+    view.setUint8(3, DATA.TAGS_GET);
+
+    const uint8Buffer = new Uint8Array(buffer);
+    uint8Buffer.set(pathBytes, 4);
+
+    return buffer;
+}

webpage/src/lib/settings.ts

@@ -1,11 +1,46 @@
+import type { AudioProcessingOptions } from './types';
+
 export const SETTINGS = {
     storage: {
         connectionKey: 'buzzer_connection_state'
     },
     bluetooth: {
-        connectionTimeoutMs: 10000 // Timeout für den Verbindungsaufbau
+        connectionTimeoutMs: 3000, // Timeout für den Verbindungsaufbau
+        appleMaxInflight: 15, // iOS erlaubt nur wenige unbestätigte Nachrichten, daher begrenzen wir die Anzahl der gleichzeitig gesendeten Frames
     },
     ui: {
-        toastDurationMs: 5000
+        toastDurationMs: 5000,
-    }
+        transferUpdateIntervalMs: 200,
+        speedSmoothingSamples: 50, // Anzahl der Messwerte für den gleitenden ETA-Durchschnitt
+        transferOverlayPersistMs: 4000,
+        estimatedInterFileGapMs: 700, // Initialer Schätzwert für die Pause zwischen zwei Dateien
+    },
 };
+
+export const AUDIO_PRESETS: Record<'normal' | 'broadcast', Partial<AudioProcessingOptions>> = {
+  normal: {
+    compressorThreshold: -45,
+    compressorRatio: 8,
+    compressorKnee: 10,
+    compressorAttack: 0.005,
+    compressorRelease: 0.15,
+  },
+  broadcast: {
+    // Noch aggressiver für maximale, konstante Lautstärke (Radio-Style)
+    compressorThreshold: -50,
+    compressorRatio: 12,
+    compressorKnee: 2,
+    compressorAttack: 0.002,
+    compressorRelease: 0.10,
+  }
+};
+
+export const DEFAULT_AUDIO_OPTIONS: AudioProcessingOptions = {
+  preset: 'normal',
+  lowCut: true,
+  lowCutFreq: 150,
+  compress: true,
+  ...AUDIO_PRESETS.normal, // Initialisierung mit Normal-Werten
+  normalize: true,
+  normalizeTargetDb: -0.5,
+} as AudioProcessingOptions;

webpage/src/lib/store.ts

@@ -1,5 +1,8 @@
 import { writable, derived } from 'svelte/store';
-import type { BuzzerFile } from './types';
+import{ type  BuzzerFile, SyncState, type SyncStatus, type AudioProcessingOptions } from './types';
+import {DEFAULT_AUDIO_OPTIONS, SETTINGS } from './settings';
+
+const CONNECTION_STATE_KEY = 'buzzer_connection_state';
 
 // Fallback-Typ fuer Build-Umgebungen ohne DOM-Library.
 interface BluetoothDevice {
@@ -28,6 +31,13 @@ export interface ProtocolInfo {
     maxChunkSize: number;
 }
 
+export interface DeviceInfo {
+    deviceId: string;
+    boardName: string;
+    boardRevision: string;
+    socName: string;
+}
+
 export interface FsInfo {
     totalSize: number;
     freeSize: number;
@@ -36,6 +46,13 @@ export interface FsInfo {
     audioPath: string;
 }
 
+export interface FwInfo {
+    fwStatus: number;
+    slot1Size: number;
+    fwVersion: string;
+    kernelVersion: string;
+}
+
 export interface StorageUsage {
     totalBytes: number;
     freeBytes: number;
@@ -46,8 +63,6 @@ export interface StorageUsage {
     freePercent: number;
 }
 
-const CONNECTION_STATE_KEY = 'buzzer_connection_state';
-
 // App-Status: Initialisierung und Feature-Support
 export const isInitializing = writable<boolean>(true);
 export const isBluetoothSupported = writable<boolean | null>(null);
@@ -64,9 +79,11 @@ export const targetDeviceId = writable<string | null>(null);
 export const pairedDevices = writable<BluetoothDevice[]>([]);
 export const availableDevices = writable<Set<string>>(new Set()); // IDs der derzeit advertisierten Geräte
 
-// Protokoll- und Dateisystem-Metadaten aus dem Device
+// Metadaten aus dem Device
 export const protocolInfo = writable<ProtocolInfo | null>(null);
+export const deviceInfo = writable<DeviceInfo | null>(null);
 export const fsInfo = writable<FsInfo | null>(null);
+export const fwInfo = writable<FwInfo | null>(null);
 
 // Dateilisten
 export const buzzerAudioFiles = writable<BuzzerFile[]>([]);
@@ -74,7 +91,7 @@ export const buzzerSysFiles = writable<BuzzerFile[]>([]);
 export const localAudioFiles = writable<BuzzerFile[]>([]);
 
 // Ladezustände getrennt nach Quelle
-export const isFetchingRemote = writable<boolean>(false);
+export const isTransferingRemote = writable<boolean>(false);
 export const isFetchingLocal = writable<boolean>(false);
 
 // Persistenz des letzten Verbindungsziels (nur im Browser nutzbar)
@@ -120,55 +137,151 @@ export const storageUsage = derived(
     },
 );
 
-// Nur für Entwicklungszwecke: lokale Dummy-Geräte für UI-Tests
+// Für die Anzeige der Transferdetails (Dateiname, Fortschritt, Geschwindigkeit, ETA)
-export function injectDummyDevices(): void {
+export const transferStats = writable({
-    const dummy1 = {
+    isActive: false,
-        id: 'dummy-1',
+    currentFileName: '',
-        name: 'Dev Buzzer (Erreichbar)',
+    pendingFileName: '',
-        forget: async () => {
+    bytesDone: 0,
-            console.log('Forget dummy-1');
+    bytesTotal: 0,
-        },
+    overallDone: 0,
-        addEventListener: () => {},
+    overallTotal: 0,
-        removeEventListener: () => {},
+    bulkStartTime: 0,
-        watchAdvertisements: async () => {},
+    fileStartTime: 0,
-        gatt: { connected: false, disconnect: () => {} },
+    filesRemaining: 0
-    } as unknown as BluetoothDevice;
+});
 
-    const dummy2 = {
+export const resetTransferStats = () => {
-        id: 'dummy-2',
+    transferStats.set({
-        name: 'Dev Buzzer (Offline)',
+        isActive: false,
-        forget: async () => {
+        currentFileName: '',
-            console.log('Forget dummy-2');
+        pendingFileName: '',
-        },
+        bytesDone: 0,
-        addEventListener: () => {},
+        bytesTotal: 0,
-        removeEventListener: () => {},
+        overallDone: 0,
-        watchAdvertisements: async () => {},
+        overallTotal: 0,
-        gatt: { connected: false, disconnect: () => {} },
+        bulkStartTime: 0,
-    } as unknown as BluetoothDevice;
+        fileStartTime: 0,
+        filesRemaining: 0
+    });
+};
 
-    pairedDevices.update((devices) => {
+let speedSamples: number[] = [];
-        if (!devices.find((d) => d.id === 'dummy-1')) {
+let lastSampleTime = 0;
-            return [...devices, dummy1, dummy2];
+let lastSampleBytes = 0;
+let lastCalculatedSpeedKbs = 0;
+
+let gapStartTime = 0;
+let gapTimes: number[] = [];
+let currentAverageGapMs = SETTINGS.ui.estimatedInterFileGapMs;
+let wasActivelyTransferring = false;
+
+export const transferDetails = derived(transferStats, ($s) => {
+    const now = performance.now();
+    
+    // Nur nullen, wenn wirklich kein Transfer mehr im Store steht. 
+    // Erlaubt das saubere Ausfaden des UI mit 100% Werten, auch wenn isActive schon false ist.
+    if ($s.overallTotal === 0) {
+        speedSamples = [];
+        lastSampleTime = 0;
+        lastSampleBytes = 0;
+        lastCalculatedSpeedKbs = 0;
+        
+        gapStartTime = 0;
+        gapTimes = [];
+        currentAverageGapMs = SETTINGS.ui.estimatedInterFileGapMs;
+        wasActivelyTransferring = false;
+        
+        return { filePercent: 0, totalPercent: 0, speedKbs: 0, fileEta: Infinity, totalEta: Infinity };
+    }
+
+    const isActivelyTransferring = $s.bytesDone > 0 && $s.bytesDone < $s.bytesTotal;
+
+    // --- 1. Gap Calculation (Realer Overhead zwischen den Dateien) ---
+    if (!isActivelyTransferring) {
+        if (wasActivelyTransferring || gapStartTime === 0) {
+            gapStartTime = now;
         }
-        return devices;
+    } else {
-    });
+        if (!wasActivelyTransferring && gapStartTime > 0) {
+            const gapMs = now - gapStartTime;
+            gapStartTime = 0;
+            if (gapMs > 0 && gapMs < 10000) { // Plausibilitäts-Check
+                gapTimes.push(gapMs);
+                currentAverageGapMs = gapTimes.reduce((a, b) => a + b, 0) / gapTimes.length;
+                console.debug(`[Transfer] Inter-file overhead gap: ${gapMs.toFixed(1)}ms. Neues Bulk-Average: ${currentAverageGapMs.toFixed(1)}ms`);
+            }
+        }
+    }
+    wasActivelyTransferring = isActivelyTransferring;
 
-    availableDevices.update((set) => {
+    // --- 2. Speed Calculation (Gleitender Durchschnitt) ---
-        const newSet = new Set(set);
+    if (isActivelyTransferring) {
-        newSet.add('dummy-1');
+        if (lastSampleTime > 0) {
-        return newSet;
+            const timeDiff = (now - lastSampleTime) / 1000;
-    });
+            const updateIntervalSecs = SETTINGS.ui.transferUpdateIntervalMs / 1000;
-}
+            if (timeDiff >= updateIntervalSecs) { // Dynamisches Fenster gemäß Config
+                const bytesDiff = $s.overallDone - lastSampleBytes;
+                if (bytesDiff >= 0) {
+                    const currentSpeedKbs = (bytesDiff / 1024) / timeDiff;
+                    speedSamples.push(currentSpeedKbs);
+                    if (speedSamples.length > SETTINGS.ui.speedSmoothingSamples) {
+                        speedSamples.shift();
+                    }
+                    lastCalculatedSpeedKbs = speedSamples.reduce((a, b) => a + b, 0) / speedSamples.length;
+                }
+                lastSampleTime = now;
+                lastSampleBytes = $s.overallDone;
+            }
+        } else {
+            lastSampleTime = now;
+            lastSampleBytes = $s.overallDone;
+        }
+    } else {
+        lastSampleTime = 0; // Friert den Speed ein
+    }
 
+    const speedBytesPerSec = lastCalculatedSpeedKbs * 1024;
+    const estimatedGapSecs = ($s.filesRemaining * currentAverageGapMs) / 1000;
+
+    // ETA Aufrunden (Math.ceil), damit die letzte Sekunde immer als "1s" und nicht "0s" angezeigt wird.
+    // Harter Fallback auf 0, sobald die Datei/der Bulk physisch 100% erreicht hat.
+    let fileEta = Infinity;
+    if ($s.bytesTotal > 0 && $s.bytesDone >= $s.bytesTotal) {
+        fileEta = 0;
+    } else if (speedBytesPerSec > 100) {
+        fileEta = Math.ceil(($s.bytesTotal - $s.bytesDone) / speedBytesPerSec);
+    }
+
+    let totalEta = Infinity;
+    if ($s.overallTotal > 0 && $s.overallDone >= $s.overallTotal) {
+        totalEta = 0;
+    } else if (speedBytesPerSec > 100) {
+        totalEta = Math.ceil((($s.overallTotal - $s.overallDone) / speedBytesPerSec) + estimatedGapSecs);
+    }
+
+    return {
+        filePercent: Math.round(($s.bytesTotal > 0 ? $s.bytesDone / $s.bytesTotal : 0) * 100),
+        totalPercent: Math.round(($s.overallTotal > 0 ? $s.overallDone / $s.overallTotal : 0) * 100),
+        speedKbs: parseFloat(lastCalculatedSpeedKbs.toFixed(2)),
+        fileEta,
+        totalEta
+    };
+});
+
+// Reset-Funktionen für verschiedene Anwendungsfälle
 export function resetRemote(): void {
     isConnected.set(false);
     isConnecting.set(false);
     protocolInfo.set(null);
+    deviceInfo.set(null);
     fsInfo.set(null);
+    fwInfo.set(null);
     activeDeviceId.set(null);
     buzzerAudioFiles.set([]);
     buzzerSysFiles.set([]);
-    isFetchingRemote.set(false);
+    isTransferingRemote.set(false);
+    resetTransferStats();
 }
 
 export function resetLocal(): void {
@@ -180,3 +293,149 @@ export function resetAll(): void {
     resetRemote();
     resetLocal();
 }
+
+// Initialisierung aus dem bestehenden LocalStorage-Eintrag
+const initialState = loadConnectionState();
+export const autoConnect = writable<boolean>(initialState?.autoConnect ?? true);
+
+// Automatische Speicherung bei Änderungen
+autoConnect.subscribe(value => {
+    // Verhindert Fehler beim serverseitigen Rendern (Astro)
+    if (typeof window !== 'undefined') {
+        const currentState = loadConnectionState() || { transport: 'ble', deviceId: '', autoConnect: true };
+        saveConnectionState({ ...currentState, autoConnect: value });
+    }
+});
+
+// Abgeleitete Stores für die Anzahl der ausgewählten Dateien und der Dateien
+export const buzzerFilesCount = derived(
+    buzzerAudioFiles,
+    ($files) => $files.length
+);
+export const selectedBuzzerFilesCount = derived(
+    buzzerAudioFiles,
+    ($files) => $files.filter(f => f.selected).length
+);
+
+export const tagEditorState = writable<{show: boolean, type: "local" | "buzzer", fileName: string}>({
+    show: false,
+    type: "buzzer",
+    fileName: ""
+});
+
+function tagsAreEqual(tagsA: any, tagsB: any): boolean {
+    const a = tagsA || {};
+    const b = tagsB || {};
+    const keysA = Object.keys(a);
+    const keysB = Object.keys(b);
+    
+    if (keysA.length !== keysB.length) return false;
+    
+    for (const key of keysA) {
+        if (JSON.stringify(a[key]) !== JSON.stringify(b[key])) return false;
+    }
+    return true;
+}
+
+export const syncStateMap = derived(
+    [localAudioFiles, buzzerAudioFiles],
+    ([$local, $remote]) => {
+        const result = {
+            local: {} as Record<string, SyncStatus>,
+            buzzer: {} as Record<string, SyncStatus>
+        };
+
+        const localByCrc = new Map<number, typeof $local>();
+        const remoteByCrc = new Map<number, typeof $remote>();
+
+        // 1. Gruppierung und Filterung von fehlenden CRCs
+        for (const file of $local) {
+            if (!file.sysTags || !file.sysTags.crc32) {
+                result.local[file.name] = { state: SyncState.UNKNOWN, linkedFiles: [] };
+                continue;
+            }
+            const crc = file.sysTags.crc32;
+            if (!localByCrc.has(crc)) localByCrc.set(crc, []);
+            localByCrc.get(crc)!.push(file);
+        }
+
+        for (const file of $remote) {
+            if (!file.sysTags || !file.sysTags.crc32) {
+                result.buzzer[file.name] = { state: SyncState.UNKNOWN, linkedFiles: [] };
+                continue;
+            }
+            const crc = file.sysTags.crc32;
+            if (!remoteByCrc.has(crc)) remoteByCrc.set(crc, []);
+            remoteByCrc.get(crc)!.push(file);
+        }
+
+        // 2. Auswertung der Gruppen
+        const allCrcs = new Set([...localByCrc.keys(), ...remoteByCrc.keys()]);
+
+        for (const crc of allCrcs) {
+            const locals = localByCrc.get(crc) || [];
+            const remotes = remoteByCrc.get(crc) || [];
+
+            const remoteNames = remotes.map(f => f.name);
+            const localNames = locals.map(f => f.name);
+
+            // Regel 5: Duplikate
+            if (locals.length > 1 || remotes.length > 1) {
+                locals.forEach(f => result.local[f.name] = { state: SyncState.DUPLICATE, linkedFiles: localNames.filter(n => n !== f.name) });
+                remotes.forEach(f => result.buzzer[f.name] = { state: SyncState.DUPLICATE, linkedFiles: remoteNames.filter(n => n !== f.name) });
+                continue;
+            }
+
+            // Regel 2: Einseitig vorhanden
+            if (locals.length === 1 && remotes.length === 0) {
+                result.local[locals[0].name] = { state: SyncState.SINGLE_SIDED, linkedFiles: [] };
+                continue;
+            }
+            if (locals.length === 0 && remotes.length === 1) {
+                result.buzzer[remotes[0].name] = { state: SyncState.SINGLE_SIDED, linkedFiles: [] };
+                continue;
+            }
+
+            // Regel 3 & 4: Beidseitig vorhanden (genau 1 lokal, genau 1 remote)
+            if (locals.length === 1 && remotes.length === 1) {
+                const localFile = locals[0];
+                const remoteFile = remotes[0];
+
+                const namesMatch = localFile.name === remoteFile.name;
+                const tagsMatch = tagsAreEqual(localFile.metaTags, remoteFile.metaTags);
+
+                const finalState = (namesMatch && tagsMatch) ? SyncState.SYNCED : SyncState.CONFLICT;
+
+                result.local[localFile.name] = { state: finalState, linkedFiles: remoteNames };
+                result.buzzer[remoteFile.name] = { state: finalState, linkedFiles: localNames };
+            }
+        }
+
+        return result;
+    }
+);
+
+function createAudioOptionsStore() {
+  // 1. Initialen Wert aus dem Local Storage laden
+  const stored = localStorage.getItem("edi_audio_options");
+  
+  // Merge aus Defaults und gespeicherten Werten, falls neue Felder hinzukommen
+  const initialValue: AudioProcessingOptions = stored
+    ? { ...DEFAULT_AUDIO_OPTIONS, ...JSON.parse(stored) }
+    : DEFAULT_AUDIO_OPTIONS;
+
+  const { subscribe, set, update } = writable<AudioProcessingOptions>(initialValue);
+
+  // 2. Bei jeder Änderung automatisch in den Local Storage schreiben
+  subscribe((currentValue) => {
+    localStorage.setItem("edi_audio_options", JSON.stringify(currentValue));
+  });
+
+  return {
+    subscribe,
+    set,
+    update,
+  };
+}
+
+export const audioOptions = createAudioOptionsStore();

webpage/src/lib/sync.ts

@@ -1,7 +1,12 @@
 import { get } from 'svelte/store';
-import { isConnected, fsInfo, buzzerAudioFiles, buzzerSysFiles, isFetchingRemote, isFetchingLocal, storageUsage} from './store';
+import { isConnected, deviceInfo, fsInfo, fwInfo, buzzerAudioFiles, buzzerSysFiles, isTransferingRemote, isFetchingLocal, storageUsage, localAudioFiles, transferStats } from './store';
-import { requestProtocolInfo, requestFSInfo, fetchDirectory } from './transport';
+import { requestProtocolInfo, requestFSInfo, fetchDirectory, getFile, putFile, deleteRemoteFile, requestDeviceInfo, requestFWInfo } from './transport';
 import type { BuzzerFile } from './types';
+import { addToast } from './toast';
+import { getLocalFiles, deleteLocalFile, getLocalFile } from './db';
+import { parseAudioFileTags } from './tagHandler';
+import { SETTINGS } from './settings';
+import { fetchFileTags } from './tagHandler';
 
 function mapToBuzzerFile(rawFile: any): BuzzerFile {
     return {
@@ -10,17 +15,20 @@ function mapToBuzzerFile(rawFile: any): BuzzerFile {
         type: rawFile.type,
         tagsLoaded: false,
         sysTags: { format: null, crc32: null },
-        metaTags: {}
+        metaTags: {},
+        selected: false,
     };
 }
 
 export async function refreshRemote() {
     if (!get(isConnected)) return;
 
-    isFetchingRemote.set(true);
+    isTransferingRemote.set(true);
     try {
         await requestProtocolInfo();
         await requestFSInfo();
+        await requestFWInfo();
+        await requestDeviceInfo();
 
         // Kurze Verzögerung für Store-Propagation
         await new Promise(r => setTimeout(r, 100));
@@ -32,28 +40,234 @@ export async function refreshRemote() {
         buzzerSysFiles.set(sysFiles.map(mapToBuzzerFile));
 
         const audioFiles = await fetchDirectory(currentFsInfo?.audioPath || "/lfs/a");
-        buzzerAudioFiles.set(audioFiles.map(mapToBuzzerFile));
+        let mappedAudio = audioFiles.map(mapToBuzzerFile);
+
+        // Dateien sofort im UI anzeigen, bevor die Tags geladen sind
+        buzzerAudioFiles.set([...mappedAudio]);
+
+        // Tags sequenziell für alle gefundenen Audiodateien laden
+        for (let i = 0; i < mappedAudio.length; i++) {
+            const fileName = mappedAudio[i].name;
+            try {
+                const tags = await fetchFileTags(fileName, "buzzer");
+                mappedAudio[i].sysTags = tags.sysTags;
+                mappedAudio[i].metaTags = tags.metaTags;
+                mappedAudio[i].tagsLoaded = true;
+
+                // Store aktualisieren, um das UI pro Datei neu zu rendern
+                buzzerAudioFiles.set([...mappedAudio]);
+            } catch (error) {
+                console.warn(`Konnte Tags für ${fileName} nicht laden.`);
+            }
+        }
 
-        console.log("Audiodatein: ", audioFiles);
-        console.log("Systemdatein: ", sysFiles);
-        console.log("Aktuelle FS-Info: ", currentFsInfo);
-        console.log("Storage Usage: ", get(storageUsage));
     } catch (error) {
         console.error("Fehler beim Aktualisieren der Buzzer-Daten:", error);
+        addToast("Fehler beim Laden der Daten vom Buzzer: " + (error instanceof Error ? error.message : "Unbekannter Fehler"), "error");
     } finally {
-        isFetchingRemote.set(false);
+        isTransferingRemote.set(false);
     }
 }
 
 export async function refreshLocal() {
     isFetchingLocal.set(true);
     try {
-        // TODO: Implementierung lokaler Dateisystem-Zugriff (z.B. File System Access API)
+        const dbFiles = await getLocalFiles();
-        // const files = await readLocalDirectory();
+
-        // localAudioFiles.set(files.map(mapToBuzzerFile));
+        // Paralleles Parsen aller Blobs in der lokalen Datenbank
+        const files: BuzzerFile[] = await Promise.all(dbFiles.map(async (record) => {
+            const { sysTags, metaTags } = await parseAudioFileTags(record.blob, record.name);
+
+            return {
+                name: record.name,
+                size: record.size,
+                type: 0, // 0 = File
+                tagsLoaded: true, // Marker, dass Tags erfolgreich extrahiert wurden
+                sysTags: sysTags,
+                metaTags: metaTags,
+                selected: false,
+            };
+        }));
+
+        localAudioFiles.set(files);
     } catch (error) {
-        console.error("Fehler beim Aktualisieren der lokalen Daten:", error);
+        console.error("Fehler beim Laden der lokalen Datenbank:", error);
+        addToast("Fehler beim Laden der lokalen Datenbank: " + (error instanceof Error ? error.message : "Unbekannter Fehler"), "error");
     } finally {
         isFetchingLocal.set(false);
     }
 }
+
+export async function downloadSelectedFiles() {
+    const files = get(buzzerAudioFiles).filter(f => f.selected);
+    const pathPrefix = get(fsInfo)?.audioPath || "/lfs/a";
+
+    if (files.length === 0) {
+        addToast("Keine Dateien zum Herunterladen ausgewählt.", "warning");
+        return;
+    }
+
+    const totalBytes = files.reduce((sum, f) => sum + f.size, 0);
+    const bulkStart = performance.now(); // Startzeitpunkt exakt erfassen
+
+    transferStats.update(s => ({
+        ...s,
+        isActive: true,
+        overallTotal: totalBytes,
+        overallDone: 0,
+        bulkStartTime: bulkStart,
+        filesRemaining: files.length
+    }));
+
+    isTransferingRemote.set(true);
+
+    try {
+        for (const file of files) {
+            console.debug(`Starte Download von: ${file.name}`);
+
+            // Setzt die Einzel-Balken hart auf 0 und bereitet UI perfekt auf neue Datei vor
+            transferStats.update(s => ({
+                ...s,
+                pendingFileName: file.name,
+                currentFileName: file.name,
+                bytesTotal: file.size,
+                bytesDone: 0,
+                filesRemaining: s.filesRemaining > 0 ? s.filesRemaining - 1 : 0
+            }));
+
+            const fullPath = `${pathPrefix}/${file.name}`;
+            await getFile(fullPath);
+        }
+
+        // Echte Durchschnittsgeschwindigkeit für den gesamten Bulk-Transfer berechnen
+        const totalTimeSec = (performance.now() - bulkStart) / 1000;
+        const avgSpeedKbs = ((totalBytes / 1024) / totalTimeSec).toFixed(1);
+
+        addToast(`${files.length} ${files.length === 1 ? "Datei" : "Dateien"} erfolgreich heruntergeladen. (${avgSpeedKbs} kB/s)`, "success");
+    } catch (error) {
+        console.error("Bulk-Download Fehler:", error);
+        addToast("Download abgebrochen: " + (error instanceof Error ? error.message : "Unbekannter Fehler"), "error");
+    } finally {
+        transferStats.update(s => ({
+            ...s,
+            isActive: false, // UI Overlay verstecken
+            overallDone: s.overallTotal,
+        }));
+        isTransferingRemote.set(false);
+    }
+}
+
+export async function deleteSelectedLocalFiles() {
+    const files = get(localAudioFiles);
+    const selectedFiles = files.filter(f => f.selected);
+
+    if (selectedFiles.length === 0) return;
+
+    if (!confirm(`Möchten Sie wirklich ${selectedFiles.length} lokale Datei(en) löschen?`)) {
+        return;
+    }
+
+    try {
+        for (const file of selectedFiles) {
+            await deleteLocalFile(file.name);
+        }
+
+        await refreshLocal();
+    } catch (error) {
+        console.error("Fehler beim Löschen lokaler Dateien:", error);
+    }
+}
+
+export async function deleteSelectedRemoteFiles() {
+    const files = get(buzzerAudioFiles).filter(f => f.selected);
+    const pathPrefix = get(fsInfo)?.audioPath || "/lfs/a";
+
+    if (files.length === 0) return;
+
+    if (!confirm(`Möchten Sie wirklich ${files.length} Datei(en) auf dem Buzzer löschen?`)) {
+        return;
+    }
+
+    isTransferingRemote.set(true);
+    try {
+        for (const file of files) {
+            const fullPath = `${pathPrefix}/${file.name}`;
+            console.debug(`Lösche Datei auf dem Buzzer: ${fullPath}`);
+            await deleteRemoteFile(fullPath);
+        }
+        addToast(`${files.length} Datei(en) auf dem Buzzer gelöscht.`, "success");
+        await refreshRemote();
+    } catch (error) {
+        console.error("Fehler beim Löschen auf dem Buzzer:", error);
+        addToast("Fehler beim Löschen: " + (error instanceof Error ? error.message : "Unbekannt"), "error");
+    } finally {
+        isTransferingRemote.set(false);
+    }
+}
+
+export async function uploadSelectedFiles() {
+    const files = get(localAudioFiles).filter(f => f.selected);
+    const pathPrefix = get(fsInfo)?.audioPath || "/lfs/a";
+
+    if (files.length === 0) {
+        addToast("Keine Dateien zum Hochladen ausgewählt.", "warning");
+        return;
+    }
+
+    const totalBytes = files.reduce((sum, f) => sum + f.size, 0);
+    const bulkStart = performance.now();
+
+    transferStats.update(s => ({
+        ...s,
+        isActive: true,
+        overallTotal: totalBytes,
+        overallDone: 0,
+        bulkStartTime: bulkStart,
+        filesRemaining: files.length
+    }));
+
+    isTransferingRemote.set(true);
+
+    try {
+        for (const file of files) {
+            console.debug(`Starte Upload von: ${file.name} (${(file.size / 1024).toFixed(1)} kB)`);
+
+            // Resetted die Store-Stats VOR der DB-Abfrage, UI glättet sich sofort
+            transferStats.update(s => ({
+                ...s,
+                pendingFileName: file.name,
+                currentFileName: file.name,
+                bytesTotal: file.size,
+                bytesDone: 0,
+                filesRemaining: s.filesRemaining > 0 ? s.filesRemaining - 1 : 0
+            }));
+
+            const dbRecord = await getLocalFile(file.name);
+            if (!dbRecord || !dbRecord.blob) {
+                throw new Error(`Datei ${file.name} nicht in lokaler Datenbank gefunden.`);
+            }
+
+            const fullPath = `${pathPrefix}/${file.name}`;
+
+            await putFile(dbRecord.blob, fullPath, file.name);
+        }
+
+        const totalTimeSec = (performance.now() - bulkStart) / 1000;
+        const avgSpeedKbs = ((totalBytes / 1024) / totalTimeSec).toFixed(1);
+
+        addToast(` ${files.length === 1 ? "Eine Datei" : files.length + " Dateien"} erfolgreich hochgeladen. (${avgSpeedKbs} kB/s)`, "success");
+
+        // Buzzer-Ansicht nach erfolgreichem Upload aktualisieren
+        refreshRemote();
+    } catch (error) {
+        console.error("Bulk-Upload Fehler:", error);
+        addToast("Upload abgebrochen: " + (error instanceof Error ? error.message : "Unbekannter Fehler"), "error");
+    } finally {
+        transferStats.update(s => ({
+            ...s,
+            isActive: false,
+            overallDone: s.overallTotal, // Schließt den Ladebalken visuell sauber ab
+        }));
+        isTransferingRemote.set(false);
+    }
+}

webpage/src/lib/tagHandler.ts

@@ -0,0 +1,369 @@
+import { getLocalFiles, saveLocalFile, deleteLocalFile } from './db';
+import type { SystemTags, MetadataTags, AudioFormat } from './types';
+import { addToast } from './toast';
+import { crc32 } from './protocol/crc32';
+import { getTags, putTags, renameRemoteFile } from './transport';
+import { get } from 'svelte/store';
+import { fsInfo, syncStateMap } from './store';
+
+function getEmptyTags() {
+    return {
+        sysTags: { format: null, crc32: null } as SystemTags,
+        metaTags: {} as MetadataTags
+    };
+}
+
+export async function parseAudioFileTags(blob: Blob, filename: string): Promise<{ sysTags: SystemTags, metaTags: MetadataTags }> {
+    const MAGIC = "TAG!";
+    const VERSION = 1;
+
+    // Ein Footer ist exakt 8 Bytes groß
+    if (blob.size < 8) return getEmptyTags();
+
+    // 1. Footer auslesen (EOF - 8)
+    const footerBuffer = await blob.slice(-8).arrayBuffer();
+    const footerView = new DataView(footerBuffer);
+
+    // Magic-Signatur prüfen ("TAG!")
+    const magicDecoder = new TextDecoder('ascii');
+    const magicStr = magicDecoder.decode(new Uint8Array(footerBuffer, 4, 4));
+    if (magicStr !== MAGIC) {
+        return getEmptyTags(); // Datei hat keine angehängten Metadaten
+    }
+
+    // Version prüfen (Little-Endian)
+    const version = footerView.getUint16(2, true);
+    if (version !== VERSION) {
+        console.warn(`TagHandler: Nicht unterstützte Format-Version (${version}) in der Datei ${filename}.`);
+        addToast(`Warnung: Unbekanntes Metadaten-Format in der Datei <b>${filename}</b>. Es können keine Tags ausgelesen werden.`, "warning");
+        return getEmptyTags();
+    }
+
+    // Gesamtgröße der Metadaten ermitteln
+    const totalSize = footerView.getUint16(0, true);
+    if (totalSize < 8 || totalSize > blob.size) {
+        console.error(`TagHandler: total_size ist ungültig (korrupt) in der Datei ${filename}.`);
+        addToast(`Fehler: Ungültige Metadaten in der Datei <b>${filename}</b>. Es können keine Tags ausgelesen werden.`, "error");
+        return getEmptyTags();
+    }
+
+    // 2. TLV-Block isolieren (alles zwischen Audio-Daten und Footer)
+    const tlvSize = totalSize - 8;
+    if (tlvSize <= 0) return getEmptyTags(); // Keine Tags vorhanden, nur Footer
+
+    const metadataStart = blob.size - totalSize;
+    const tlvBuffer = await blob.slice(metadataStart, metadataStart + tlvSize).arrayBuffer();
+    const tlvView = new DataView(tlvBuffer);
+
+    const tags = getEmptyTags();
+    let offset = 0;
+
+    // 3. TLV-Blöcke iterieren
+    while (offset + 4 <= tlvSize) { // 4 Bytes für den Header (Type, Index, Length)
+        const type = tlvView.getUint8(offset);
+        const index = tlvView.getUint8(offset + 1);
+        const length = tlvView.getUint16(offset + 2, true);
+
+        offset += 4; // Zeiger hinter den Header verschieben
+
+        // Sicherheitsprüfung gegen Pufferüberläufe durch korrupte Längenangaben
+        if (offset + length > tlvSize) {
+            console.warn(`TagHandler: TLV-Block überschreitet Puffergröße in der Datei ${filename}. Abbruch.`);
+            addToast(`Warnung: Ungültige Metadatenstruktur in der Datei <b>${filename}</b>. Es können nur teilweise Tags ausgelesen werden.`, "warning");
+            break;
+        }
+
+        if (type === 0x00) {
+            // System Metadata
+            if (index === 0x00 && length === 8) {
+                // Audio Format
+                tags.sysTags.format = {
+                    codec: tlvView.getUint8(offset),
+                    bitDepth: tlvView.getUint8(offset + 1),
+                    // Bytes an Offset 2 und 3 sind reserviert/Padding
+                    sampleRate: tlvView.getUint32(offset + 4, true)
+                };
+            } else if (index === 0x01 && length === 4) {
+                // Audio CRC32
+                tags.sysTags.crc32 = tlvView.getUint32(offset, true);
+            }
+        } else if (type === 0x10) {
+            // JSON Metadata
+            try {
+                const jsonBytes = new Uint8Array(tlvBuffer, offset, length);
+                const jsonStr = new TextDecoder('utf-8').decode(jsonBytes);
+                const parsed = JSON.parse(jsonStr);
+
+                // Geparste Daten in das MetaTag-Interface mergen
+                tags.metaTags = { ...tags.metaTags, ...parsed };
+            } catch (e) {
+                console.error(`TagHandler: Fehler beim Parsen der JSON-Metadaten in der Datei ${filename}.`, e);
+                addToast(`Fehler: Ungültige JSON-Metadaten in der Datei <b>${filename}</b>. Es können keine Tags ausgelesen werden.`, "error");
+            }
+        }
+
+        offset += length; // Zum nächsten TLV-Block springen
+    }
+
+    return tags;
+}
+
+// Baut den binären TLV-Block gemäß Spezifikation
+function buildTagBlock(sysTags: SystemTags, metaTags: MetadataTags): ArrayBuffer {
+    const jsonStr = JSON.stringify(metaTags);
+    const jsonBytes = new TextEncoder().encode(jsonStr);
+
+    // Größen berechnen
+    const tlvAudioFormatSize = sysTags.format ? 4 + 8 : 0; // Header(4) + Payload(8)
+    const tlvCrcSize = sysTags.crc32 ? 4 + 4 : 0;          // Header(4) + Payload(4)
+    const tlvJsonSize = 4 + jsonBytes.length;              // Header(4) + Payload(variabel)
+
+    const totalSize = tlvAudioFormatSize + tlvCrcSize + tlvJsonSize + 8; // + 8 für Footer
+
+    const buffer = new ArrayBuffer(totalSize);
+    const view = new DataView(buffer);
+    const uint8View = new Uint8Array(buffer);
+
+    let offset = 0;
+
+    // 1. Audio Format TLV (Type 0x00, Index 0x00)
+    if (sysTags.format) {
+        view.setUint8(offset, 0x00);
+        view.setUint8(offset + 1, 0x00);
+        view.setUint16(offset + 2, 8, true);
+        view.setUint8(offset + 4, sysTags.format.codec);
+        view.setUint8(offset + 5, sysTags.format.bitDepth);
+        // Bytes an Offset 6 und 7 bleiben 0 (Reserved)
+        view.setUint32(offset + 8, sysTags.format.sampleRate, true);
+        offset += 12;
+    }
+
+    // 2. CRC32 TLV (Type 0x00, Index 0x01)
+    if (sysTags.crc32) {
+        view.setUint8(offset, 0x00);
+        view.setUint8(offset + 1, 0x01);
+        view.setUint16(offset + 2, 4, true);
+        view.setUint32(offset + 4, sysTags.crc32, true);
+        offset += 8;
+    }
+
+    // 3. JSON Metadata TLV (Type 0x10, Index 0x00)
+    view.setUint8(offset, 0x10);
+    view.setUint8(offset + 1, 0x00);
+    view.setUint16(offset + 2, jsonBytes.length, true);
+    uint8View.set(jsonBytes, offset + 4);
+    offset += 4 + jsonBytes.length;
+    console.log(`TagHandler: JSON-Metadaten mit ${jsonBytes.length} Bytes hinzugefügt.`, { jsonStr });
+    // 4. Footer
+    view.setUint16(offset, totalSize, true); // Gesamtgröße
+    view.setUint16(offset + 2, 1, true);     // Version 1
+    // Magic "TAG!"
+    view.setUint8(offset + 4, 0x54); // T
+    view.setUint8(offset + 5, 0x41); // A
+    view.setUint8(offset + 6, 0x47); // G
+    view.setUint8(offset + 7, 0x21); // !
+
+    return buffer;
+}
+
+// Hauptfunktion für das lokale Aktualisieren und Umbenennen
+export async function updateLocalFile(oldName: string, newName: string, sysTags: SystemTags, newMetaTags: MetadataTags): Promise<void> {
+    const files = await getLocalFiles();
+    const record = files.find(f => f.name === oldName);
+    if (!record) throw new Error(`Datei ${oldName} nicht in der lokalen Datenbank gefunden.`);
+
+    const blob = record.blob;
+    let audioBlob = blob;
+
+    // Alte Metadaten abschneiden, falls vorhanden
+    if (blob.size >= 8) {
+        const footerBuf = await blob.slice(-8).arrayBuffer();
+        const footerView = new DataView(footerBuf);
+        const magicStr = new TextDecoder('ascii').decode(new Uint8Array(footerBuf, 4, 4));
+
+        if (magicStr === "TAG!") {
+            const totalSize = footerView.getUint16(0, true);
+            if (totalSize >= 8 && totalSize <= blob.size) {
+                audioBlob = blob.slice(0, blob.size - totalSize);
+            }
+        }
+    }
+
+    // Neue Tags generieren und an die Rohdaten anhängen
+    const newTagsBuffer = buildTagBlock(sysTags, newMetaTags);
+    const finalBlob = new Blob([audioBlob, newTagsBuffer]);
+
+    // In die Datenbank schreiben
+    if (oldName !== newName) {
+        await deleteLocalFile(oldName);
+    }
+    await saveLocalFile(newName, finalBlob, finalBlob.size);
+}
+
+export async function updateRemoteFile(
+    oldName: string,
+    newName: string,
+    sysTags: SystemTags,
+    newMetaTags: MetadataTags
+): Promise<void> {
+    const currentFsInfo = get(fsInfo);
+    const basePath = currentFsInfo?.audioPath || "/lfs/a";
+    const oldFullPath = `${basePath}/${oldName}`;
+    const newFullPath = `${basePath}/${newName}`;
+
+    if (oldName !== newName) {
+        console.log(`TagHandler: Benenne Datei auf dem Buzzer um (${oldFullPath} -> ${newFullPath})`);
+        await renameRemoteFile(oldFullPath, newFullPath);
+    }
+
+    // 1. Den binären TLV-Block inkl. Footer bauen
+    const newTagsBuffer = buildTagBlock(sysTags, newMetaTags);
+    const tagsBlob = new Blob([newTagsBuffer]);
+
+    console.log(`Sende modifizierte Tags (${tagsBlob.size} Bytes) an ${newFullPath}...`);
+
+    // 3. Über das Protokoll an den Buzzer senden
+    await putTags(tagsBlob, newFullPath);
+}
+
+export async function updateFile(
+    oldName: string,
+    newName: string,
+    sysTags: SystemTags,
+    newMetaTags: MetadataTags,
+    type: "local" | "buzzer",
+    applyToBoth: boolean = false
+): Promise<void> {
+    if (type === "local") {
+        await updateLocalFile(oldName, newName, sysTags, newMetaTags);
+        if (applyToBoth) {
+            try {
+                const sMap = get(syncStateMap);
+                const syncStatus = sMap.local[oldName];
+                if (syncStatus && syncStatus.linkedFiles.length > 0) {
+                    const remoteOldName = syncStatus.linkedFiles[0];
+                    await updateRemoteFile(remoteOldName, newName, sysTags, newMetaTags);
+                } else {
+                    console.warn(`Keine verknüpfte Remote-Datei für '${oldName}' gefunden. Überspringe Remote-Update.`);
+                }
+            } catch (e) {
+                console.error("Fehler beim synchronen Aktualisieren der Buzzer-Datei:", e);
+                addToast("Fehler beim Update der Buzzer-Datei: " + (e instanceof Error ? e.message : "Unbekannt"), "error");
+            }
+        }
+    } else {
+        await updateRemoteFile(oldName, newName, sysTags, newMetaTags);
+        if (applyToBoth) {
+            try {
+                const sMap = get(syncStateMap);
+                const syncStatus = sMap.buzzer[oldName];
+                if (syncStatus && syncStatus.linkedFiles.length > 0) {
+                    const localOldName = syncStatus.linkedFiles[0];
+                    await updateLocalFile(localOldName, newName, sysTags, newMetaTags);
+                } else {
+                    throw new Error(`Keine verknüpfte lokale Datei für '${oldName}' gefunden.`);
+                }
+            } catch (e) {
+                console.error("Fehler beim synchronen Aktualisieren der lokalen Datei:", e);
+                addToast("Fehler beim Update der lokalen Datei: " + (e instanceof Error ? e.message : "Unbekannt"), "error");
+            }
+        }
+    }
+}
+
+/**
+ * FASADE: Einheitlicher Einstiegspunkt zum Auslesen von Tags.
+ */
+export async function fetchFileTags(
+    filename: string,
+    type: "local" | "buzzer"
+): Promise<{ sysTags: SystemTags, metaTags: MetadataTags }> {
+    if (type === "local") {
+        const files = await getLocalFiles();
+        const record = files.find(f => f.name === filename);
+        if (!record) throw new Error(`Datei ${filename} lokal nicht gefunden.`);
+
+        return await parseAudioFileTags(record.blob, filename);
+    } else {
+        try {
+            const currentFsInfo = get(fsInfo);
+            const basePath = currentFsInfo?.audioPath || "/lfs/a";
+            const fullPath = `${basePath}/${filename}`;
+
+            const blob = await getTags(fullPath);
+            return await parseAudioFileTags(blob, filename);
+        } catch (e) {
+            console.warn(`Fehler beim Abrufen der Remote-Tags für ${filename}:`, e);
+            return getEmptyTags();
+        }
+    }
+}
+
+export async function calculateLocalAudioCrc(filename: string): Promise<number> {
+    const files = await getLocalFiles();
+    const record = files.find(f => f.name === filename);
+    if (!record) throw new Error(`Datei ${filename} nicht gefunden.`);
+
+    const blob: Blob = record.blob;
+    let audioSize = blob.size;
+
+    // 1. Prüfen, ob Metadaten vorhanden sind, um nur den Audioanteil zu berechnen
+    if (blob.size >= 8) {
+        const footerBuffer = await blob.slice(-8).arrayBuffer();
+        const footerView = new DataView(footerBuffer);
+        const magic = new TextDecoder('ascii').decode(new Uint8Array(footerBuffer, 4, 4));
+
+        if (magic === "TAG!") {
+            const totalSize = footerView.getUint16(0, true);
+            if (totalSize >= 8 && totalSize <= blob.size) {
+                audioSize = blob.size - totalSize; // Nur bis zum Beginn der Tags lesen
+            }
+        }
+    }
+
+    // 2. Audio-Daten einlesen
+    const audioData = await blob.slice(0, audioSize).arrayBuffer();
+
+    // 3. CRC32 berechnen
+    return crc32(new Uint8Array(audioData));
+}
+
+export async function updateLocalAudioCrc(filename: string): Promise<number> {
+    const files = await getLocalFiles();
+    const record = files.find(f => f.name === filename);
+    if (!record) throw new Error(`Datei ${filename} nicht gefunden.`);
+
+    // Tags auslesen
+    const { sysTags, metaTags } = await parseAudioFileTags(record.blob, filename);
+
+    // Neue CRC berechnen
+    const newCrc = await calculateLocalAudioCrc(filename);
+    if (newCrc === sysTags.crc32) {
+        console.log(`TagHandler: CRC32 für ${filename} ist bereits aktuell (${newCrc}). Kein Update nötig.`);
+        return newCrc; // Keine Änderung, daher kein Update
+    }
+    console.log(`TagHandler: Aktualisiere CRC32 für ${filename} von ${sysTags.crc32} auf ${newCrc}.`);
+    // Mit aktualisierter CRC speichern
+    const updatedSysTags = { ...sysTags, crc32: newCrc };
+    await updateLocalFile(filename, filename, updatedSysTags, metaTags);
+
+    return newCrc;
+}
+
+export async function updateLocalAudioFormat(filename: string, audioFormat: AudioFormat ): Promise<AudioFormat> {
+    const files = await getLocalFiles();
+    const record = files.find(f => f.name === filename);
+    if (!record) throw new Error(`Datei ${filename} nicht gefunden.`);
+
+    // Tags auslesen
+    const { sysTags, metaTags } = await parseAudioFileTags(record.blob, filename);
+
+    // Neue CRC berechnen
+    
+    console.log(`TagHandler: Aktualisiere Audioformat für ${filename}`, { oldFormat: sysTags.format, newFormat: audioFormat });
+    // Mit aktualisierter CRC speichern
+    const updatedSysTags = { ...sysTags, format: audioFormat };
+    await updateLocalFile(filename, filename, updatedSysTags, metaTags);
+
+    return audioFormat;
+}

webpage/src/lib/transport.ts

@@ -1,6 +1,15 @@
-import { buildLSRequest, buildProtocolInfoRequest, buildFSInfoRequest, setLsResolver } from './protocol/parser';
+import { buildLSRequest, buildProtocolInfoRequest, buildDeviceInfoRequest, buildFSInfoRequest, buildFWInfoRequest, setLsResolver, buildFileGetRequest, setFileGetResolver, buildTagsGetRequest, uploadState } from './protocol/parser';
-import { buildFileGetRequest, setFileGetResolver } from './protocol/parser';
+import { crc32 } from './protocol/crc32';
+import { get } from 'svelte/store';
+import { protocolInfo, transferStats, } from './store';
+import { DATA, FRAME } from './protocol/constants';
 import { isConnected, resetRemote } from './store';
+import { SETTINGS } from './settings';
+
+const isMac = navigator.userAgent.includes('Macintosh') || navigator.userAgent.includes('Mac OS X');
+const MAX_INFLIGHT = isMac ? SETTINGS.bluetooth.appleMaxInflight : Infinity;  // iOS erlaubt nur wenige unbestätigte Nachrichten
+
+console.log("Transport: Max Inflight Frames =", MAX_INFLIGHT);
 
 export type FrameSender = (buffer: ArrayBuffer) => Promise<void>;
 let currentSender: FrameSender | null = null;
@@ -17,6 +26,8 @@ export async function handleTransportConnect(sender: FrameSender) {
         // Basis-Informationen zwingend vorab laden
         await requestProtocolInfo();
         await requestFSInfo();
+        await requestDeviceInfo();
+        await requestFWInfo();
 
         // Erst wenn diese Basisdaten da sind, wird die UI freigeschaltet
         isConnected.set(true);
@@ -35,10 +46,18 @@ export async function requestProtocolInfo() {
     await sendFrame(buildProtocolInfoRequest());
 }
 
+export async function requestDeviceInfo() {
+    await sendFrame(buildDeviceInfoRequest());
+}
+
 export async function requestFSInfo() {
     await sendFrame(buildFSInfoRequest());
 }
 
+export async function requestFWInfo() {
+    await sendFrame(buildFWInfoRequest());
+}
+
 let isListing = false;
 
 export async function fetchDirectory(path: string): Promise<any[]> {
@@ -70,7 +89,7 @@ export function handleTransportDisconnect() {
 
 let isFileTransferring = false;
 
-export async function fetchFileThroughputTest(path: string): Promise<boolean> {
+export async function getFile(path: string): Promise<boolean> {
     if (isFileTransferring) {
         throw new Error("Ein Dateitransfer läuft bereits.");
     }
@@ -78,7 +97,7 @@ export async function fetchFileThroughputTest(path: string): Promise<boolean> {
 
     return new Promise(async (resolve, reject) => {
         setFileGetResolver(
-            (success) => { isFileTransferring = false; resolve(success); },
+            (result: any) => { isFileTransferring = false; resolve(result.success); },
             (err) => { isFileTransferring = false; reject(err); }
         );
 
@@ -90,3 +109,313 @@ export async function fetchFileThroughputTest(path: string): Promise<boolean> {
         }
     });
 }
+
+export async function getTags(path: string): Promise<Blob> {
+    if (isFileTransferring) {
+        throw new Error("Ein Dateitransfer läuft bereits.");
+    }
+    isFileTransferring = true;
+
+    return new Promise(async (resolve, reject) => {
+        setFileGetResolver(
+            (result: any) => {
+                isFileTransferring = false;
+                // Wenn wir erfolgreich sind, geben wir den Blob zurück. Bei 0 Bytes ist er leer.
+                if (result.success && result.blob) {
+                    resolve(result.blob);
+                } else {
+                    resolve(new Blob([])); // Fallback
+                }
+            },
+            (err) => {
+                isFileTransferring = false;
+                reject(err);
+            },
+            'tags' // WICHTIG: Setzt den Parser in den stummen Modus ohne UI-Ladebalken!
+        );
+
+        try {
+            await sendFrame(buildTagsGetRequest(path));
+        } catch (e) {
+            isFileTransferring = false;
+            reject(e);
+        }
+    });
+}
+
+export async function putFile(fileBlob: Blob, remotePath: string, fileNameForUI: string): Promise<void> {
+    if (isFileTransferring) {
+        throw new Error("Ein Dateitransfer läuft bereits.");
+    }
+    isFileTransferring = true;
+
+    uploadState.active = true;
+    uploadState.credits = 0; // Warten auf das initiale ACK
+    uploadState.onCreditsAdded = null;
+    uploadState.onSuccess = null;
+    uploadState.onError = null;
+
+    try {
+        const pathBytes = new TextEncoder().encode(remotePath);
+        const reqBuffer = new ArrayBuffer(4 + 1 + 4 + pathBytes.length); // Header(3) + DataType(1) + Size(4) + Path
+        const reqView = new DataView(reqBuffer);
+
+        reqView.setUint8(0, FRAME.REQUEST);
+        reqView.setUint16(1, 1 + 4 + pathBytes.length, true);
+        reqView.setUint8(3, DATA.FILE_PUT);
+        reqView.setUint32(4, fileBlob.size, true);
+        new Uint8Array(reqBuffer).set(pathBytes, 8);
+
+        // UI Statistiken initialisieren
+        const startTime = performance.now();
+        transferStats.update(s => ({
+            ...s,
+            bytesTotal: fileBlob.size,
+            bytesDone: 0,
+            currentFileName: fileNameForUI,
+            fileStartTime: startTime,
+            bulkStartTime: s.bulkStartTime === 0 ? startTime : s.bulkStartTime
+        }));
+
+        await sendFrame(reqBuffer);
+
+        // Chunking Loop
+        const maxChunkSize = get(protocolInfo)?.maxChunkSize || 240;
+        const fileData = new Uint8Array(await fileBlob.arrayBuffer());
+        let offset = 0;
+        let currentCrc = 0;
+        let lastUiUpdate = 0;
+
+        while (offset < fileData.length) {
+            // Blockieren, falls keine Credits vorhanden sind
+            if (uploadState.credits <= 0) {
+                await new Promise<void>((resolve) => {
+                    uploadState.onCreditsAdded = () => {
+                        if (uploadState.credits > 0) {
+                            uploadState.onCreditsAdded = null;
+                            resolve();
+                        }
+                    };
+                });
+            }
+
+            if (uploadState.credits > MAX_INFLIGHT) {
+                uploadState.credits = MAX_INFLIGHT;
+            }
+
+            const chunkLen = Math.min(maxChunkSize, fileData.length - offset);
+            const chunkData = fileData.subarray(offset, offset + chunkLen);
+
+            // CRC32 fortlaufend berechnen
+            currentCrc = crc32(chunkData, currentCrc);
+
+            const chunkBuffer = new ArrayBuffer(3 + chunkLen); // Header(3) + Payload
+            const chunkView = new DataView(chunkBuffer);
+            chunkView.setUint8(0, FRAME.FILE_CHUNK);
+            chunkView.setUint16(1, chunkLen, true);
+            new Uint8Array(chunkBuffer).set(chunkData, 3);
+
+            await sendFrame(chunkBuffer);
+
+            uploadState.credits--;
+            offset += chunkLen;
+
+            // UI gedrosselt updaten (gemäß Settings)
+            const now = performance.now();
+            if (now - lastUiUpdate > SETTINGS.ui.transferUpdateIntervalMs) {
+                transferStats.update(s => ({
+                    ...s,
+                    bytesDone: offset,
+                    overallDone: s.overallDone + (offset - s.bytesDone)
+                }));
+                lastUiUpdate = now;
+            }
+        }
+
+        // Abschließendes UI Update
+        transferStats.update(s => ({
+            ...s,
+            bytesDone: fileData.length,
+            overallDone: s.overallDone + (fileData.length - s.bytesDone)
+        }));
+
+        // END Frame senden
+        const endBuffer = new ArrayBuffer(3 + 4);
+        const endView = new DataView(endBuffer);
+        endView.setUint8(0, FRAME.FILE_END);
+        endView.setUint16(1, 4, true);
+        endView.setUint32(3, currentCrc, true);
+
+        await sendFrame(endBuffer);
+
+        // Auf Erfolgsmeldung vom Dateisystem warten
+        await new Promise<void>((resolve, reject) => {
+            const finalTimeout = setTimeout(() => {
+                uploadState.onSuccess = null;
+                uploadState.onError = null;
+                reject(new Error("Timeout: Keine Bestätigung (SUCCESS) vom Buzzer erhalten."));
+            }, 5000); // 5 Sekunden warten auf das Dateisystem
+
+            uploadState.onSuccess = () => {
+                clearTimeout(finalTimeout);
+                resolve();
+            };
+            uploadState.onError = (err) => {
+                clearTimeout(finalTimeout);
+                reject(err);
+            };
+        });
+
+    } finally {
+        // Cleanup
+        isFileTransferring = false;
+        uploadState.active = false;
+        uploadState.onCreditsAdded = null;
+        uploadState.onSuccess = null;
+        uploadState.onError = null;
+    }
+}
+
+export async function deleteRemoteFile(fullPath: string): Promise<void> {
+    const pathBytes = new TextEncoder().encode(fullPath);
+    const payloadLength = 1 + 1 + pathBytes.length; // data_type(1) + path_length(1) + path
+
+    const buffer = new ArrayBuffer(3 + payloadLength);
+    const view = new DataView(buffer);
+    const uint8View = new Uint8Array(buffer);
+
+    view.setUint8(0, FRAME.REQUEST);
+    view.setUint16(1, payloadLength, true);
+
+    view.setUint8(3, 0x24); // BUZZ_DATA_RM_FILE
+    view.setUint8(4, pathBytes.length);
+    uint8View.set(pathBytes, 5);
+
+    await sendFrame(buffer);
+    // Kurze Wartezeit, bis der Parser SUCCESS verarbeitet und der Flash fertig ist
+    await new Promise(resolve => setTimeout(resolve, 200));
+}
+
+export async function renameRemoteFile(oldFullPath: string, newFullPath: string): Promise<void> {
+    const oldBytes = new TextEncoder().encode(oldFullPath);
+    const newBytes = new TextEncoder().encode(newFullPath);
+
+    const payloadLength = 1 + 1 + 1 + oldBytes.length + newBytes.length; // data_type + 2x len + 2x string
+
+    const buffer = new ArrayBuffer(3 + payloadLength);
+    const view = new DataView(buffer);
+    const uint8View = new Uint8Array(buffer);
+
+    view.setUint8(0, FRAME.REQUEST);
+    view.setUint16(1, payloadLength, true);
+
+    view.setUint8(3, 0x25); // BUZZ_DATA_RENAME_FILE
+    view.setUint8(4, oldBytes.length);
+    view.setUint8(5, newBytes.length);
+
+    uint8View.set(oldBytes, 6);
+    uint8View.set(newBytes, 6 + oldBytes.length);
+
+    await sendFrame(buffer);
+    // Kurze Wartezeit, bis der Parser SUCCESS verarbeitet und der Flash fertig ist
+    await new Promise(resolve => setTimeout(resolve, 200));
+}
+
+export async function putTags(tagsBlob: Blob, remotePath: string): Promise<void> {
+    if (isFileTransferring) {
+        throw new Error("Ein Dateitransfer läuft bereits.");
+    }
+    isFileTransferring = true;
+
+    uploadState.active = true;
+    uploadState.credits = 0;
+    uploadState.onCreditsAdded = null;
+    uploadState.onSuccess = null;
+    uploadState.onError = null;
+
+    try {
+        const pathBytes = new TextEncoder().encode(remotePath);
+        const reqBuffer = new ArrayBuffer(4 + 1 + 4 + pathBytes.length);
+        const reqView = new DataView(reqBuffer);
+
+        reqView.setUint8(0, FRAME.REQUEST);
+        reqView.setUint16(1, 1 + 4 + pathBytes.length, true);
+        reqView.setUint8(3, DATA.TAGS_PUT);
+        reqView.setUint32(4, tagsBlob.size, true);
+        new Uint8Array(reqBuffer).set(pathBytes, 8);
+
+        await sendFrame(reqBuffer);
+
+        const maxChunkSize = get(protocolInfo)?.maxChunkSize || 240;
+        const tagsData = new Uint8Array(await tagsBlob.arrayBuffer());
+        let offset = 0;
+        let currentCrc = 0;
+
+        while (offset < tagsData.length) {
+            if (uploadState.credits <= 0) {
+                await new Promise<void>((resolve, reject) => {
+                    const timeout = setTimeout(() => {
+                        uploadState.onCreditsAdded = null;
+                        reject(new Error("Timeout beim Senden der Tags."));
+                    }, 5000);
+
+                    uploadState.onCreditsAdded = () => {
+                        if (uploadState.credits > 0) {
+                            clearTimeout(timeout);
+                            uploadState.onCreditsAdded = null;
+                            resolve();
+                        }
+                    };
+                });
+            }
+
+            const chunkLen = Math.min(maxChunkSize, tagsData.length - offset);
+            const chunkData = tagsData.subarray(offset, offset + chunkLen);
+
+            currentCrc = crc32(chunkData, currentCrc);
+
+            const chunkBuffer = new ArrayBuffer(3 + chunkLen);
+            const chunkView = new DataView(chunkBuffer);
+            chunkView.setUint8(0, FRAME.FILE_CHUNK);
+            chunkView.setUint16(1, chunkLen, true);
+            new Uint8Array(chunkBuffer).set(chunkData, 3);
+
+            await sendFrame(chunkBuffer);
+
+            uploadState.credits--;
+            offset += chunkLen;
+        }
+
+        const endBuffer = new ArrayBuffer(3 + 4);
+        const endView = new DataView(endBuffer);
+        endView.setUint8(0, FRAME.FILE_END);
+        endView.setUint16(1, 4, true);
+        endView.setUint32(3, currentCrc, true);
+
+        await sendFrame(endBuffer);
+
+        await new Promise<void>((resolve, reject) => {
+            const finalTimeout = setTimeout(() => {
+                uploadState.onSuccess = null;
+                uploadState.onError = null;
+                reject(new Error("Timeout: Keine Bestätigung (SUCCESS) vom Buzzer erhalten."));
+            }, 5000); // 5 Sekunden warten auf das Dateisystem
+
+            uploadState.onSuccess = () => {
+                clearTimeout(finalTimeout);
+                resolve();
+            };
+            uploadState.onError = (err) => {
+                clearTimeout(finalTimeout);
+                reject(err);
+            };
+        });
+
+    } finally {
+        isFileTransferring = false;
+        uploadState.active = false;
+        uploadState.onCreditsAdded = null;
+        uploadState.onSuccess = null;
+        uploadState.onError = null;
+    }
+}

webpage/src/lib/types.ts

@@ -26,4 +26,32 @@ export interface BuzzerFile {
     tagsLoaded: boolean; 
     sysTags: SystemTags;
     metaTags: MetadataTags;
+    selected: boolean;
+}
+
+export enum SyncState {
+    UNKNOWN = "UNKNOWN",       // Amber Question (Keine CRC32)
+    SINGLE_SIDED = "SINGLE_SIDED", // Green Circle (Nur lokal oder nur remote)
+    SYNCED = "SYNCED",         // Green CheckCircle (Beidseitig, identisch)
+    CONFLICT = "CONFLICT",     // Amber Warning (Beidseitig, abweichender Name/Tags)
+    DUPLICATE = "DUPLICATE"    // Red Warning (Mehrfach gleiche CRC32 auf einer Seite)
+}
+
+export interface SyncStatus {
+    state: SyncState;
+    linkedFiles: string[]; // Referenzen auf die Dateinamen der Gegenseite (für Tooltips)
+}
+
+export interface AudioProcessingOptions {
+  preset: 'normal' | 'broadcast' | 'custom';
+  lowCut: boolean;
+  lowCutFreq: number;
+  compress: boolean;
+  compressorThreshold: number;
+  compressorRatio: number;
+  compressorKnee: number;
+  compressorAttack: number;
+  compressorRelease: number;
+  normalize: boolean;
+  normalizeTargetDb: number;
 }

webpage/src/pages/index.astro

@@ -1,41 +1,14 @@
 ---
-import MainLayout from "../layouts/MainLayout.astro";
-import BuzzerControl from "../components/BuzzerControl.svelte";
-import BLEList from "../components/BLEList.svelte";
 import AppGuard from "../components/AppGuard.svelte";
-import FlashUsage from "../components/FlashUsage.svelte";
+import MainLayout from "../layouts/MainLayout.astro";
+import Header from "../components/Header.svelte";
+import MainGrid from "../components/MainGrid.svelte";
 ---
 
+<!-- index.astro -->
 <MainLayout>
-    <AppGuard client:load>
+    <AppGuard client:only="svelte">
-        <div class="max-w-4xl mx-auto mt-4">
+        <Header client:only="svelte" />
-            <header class="mb-12 text-center">
+        <MainGrid client:only="svelte" />
-                <h1 class="text-3xl md:text-4xl font-extrabold text-slate-800 tracking-tight mb-3">
-                    Buzzer Management
-                </h1>
-                <p class="text-slate-500 text-lg max-w-2xl mx-auto">
-                    Verbinde dich mit dem nRF52840 Buzzer, um Audio-Dateien zu übertragen und
-                    Systemparameter auszulesen.
-                </p>
-            </header>
-
-            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-                <div>
-                    <BuzzerControl client:load />
-                </div>
-
-                <div>
-                    <BLEList client:load />
-                </div>
-            </div>
-          <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-                <div>
-                    <FlashUsage client:load />
-                </div>
-
-                <div>
-                </div>
-            </div>
-        </div>
     </AppGuard>
 </MainLayout>

webpage/src/styles/app.css

@@ -0,0 +1,77 @@
+/* app.css */
+@import "tailwindcss";
+@slot base;
+@slot components;
+@slot utilities;
+
+@theme {
+  --color-surface: var(--color-slate-50);
+  --color-on-surface: var(--color-slate-900);
+  --color-light-on-surface: var(--color-slate-700);
+  --color-accent: var(--color-blue-600);
+  --color-accent-bg: var(--color-blue-50);
+  --color-accent-hover: var(--color-blue-100);
+  --color-accent-border-separator: var(--color-blue-200);
+
+  --color-surface-card: var(--color-white);
+  --color-surface-hover: var(--color-slate-100);
+
+  --color-border-card: var(--color-slate-200);
+  --color-border-separator: var(--color-slate-100);
+
+  --color-text-muted: var(--color-slate-400);
+
+  --color-border-selected: var(--color-blue-500);
+  --color-bg-selected: var(--color-blue-50);
+  --color-bg-selected-hover: var(--color-blue-200);
+}
+
+@layer base {
+  body {
+    @apply bg-surface text-on-surface;
+  }
+}
+
+@layer components {
+  .main-layout {
+    @apply grid grid-cols-1 lg:grid-cols-2 gap-0 lg:gap-6 p-0 lg:p-6 w-full max-w-7xl mx-auto;
+  }
+
+  
+  .disconnected {
+    @apply grayscale opacity-30 blur-[1px];
+  }
+
+  .buzzer-card {
+    @apply bg-surface-card border-border-card transition-all duration-300 first:mt-0 mt-5 sm:mt-0 border-t first:border-t-0 sm:border-t-0 border-border-card;
+    @apply border-b lg:border lg:rounded-xl lg:shadow-sm overflow-hidden;
+  }
+
+  .card-header {
+    @apply px-3 py-2 flex justify-between items-center bg-gradient-to-b from-white to-slate-100 border-b border-border-card h-12;
+  }
+
+  .card-title {
+    @apply font-light font-features-['smcp'] tracking-tighter;
+  }
+
+  /* .card-body {
+    @apply;
+  } */
+
+  .buzzer-card .icon {
+    @apply w-7 h-7 p-1;
+  }
+
+  .buzzer-card .list-menu-icon {
+    @apply w-8 h-8 p-2;
+  }
+
+  .card-header .btn {
+    @apply border rounded border-transparent hover:bg-slate-200 hover:border-border-card hover:shadow-sm;
+  }
+  
+  .text-2xs {
+    @apply text-[0.625rem];
+  }
+}

webpage/src/styles/global.css

@@ -1,8 +0,0 @@
-@import "tailwindcss";
-
-@theme {
-    --color-primary: var(--color-slate-700);
-    --color-surface: var(--color-slate-50);
-    --shadow-top: 0 -2px 3px -1px color-mix(in srgb, var(--color-slate-500), transparent 70%);
-    --shadow-bottom: 0 2px 3px -1px color-mix(in srgb, var(--color-slate-500), transparent 70%);
-}