Rev 0.2: Major hardware improvements and production readiness

Hardware Improvements (Thanks to shx for schematic cleanup):
- Clean up schematic organization and structure
- Set CAN transceiver Silent pin to GND for stability
- Add status LEDs (yellow: 24V/5V/3.3V, green: MCU PB4)
- Replace jumpers with solder jumpers on bottom side
- Add jumpers to output PFETs for permanent-on without firmware
- Add robust test points for 5V/GND load testing
- Add optional heatsink for DC/DC converter on bottom
- Add 10µF capacitor for MCU on 3.3V rail

Component Optimizations:
- Replace 30kΩ with 33kΩ basic part for simplified BOM
- Change DC/DC feedback: 15.5kΩ15kΩ (new output: 5.1V)
- Upgrade CAN ESD protection: NUP2105LPESD1CAN
- Increase CAN termination resistor footprint: 04020603
- Switch USB hub supply from 5V to 3.3V per datasheet

Production Ready:
- Add all LCSC part numbers and rotations
- Generate complete production data package
- Improve PCB layout and button placement
- Create comprehensive changelog documentation

EWS.kicad_pro

@@ -37,9 +37,9 @@
         "other_text_thickness": 0.15,
         "other_text_upright": false,
         "pads": {
-          "drill": 0.8,
-          "height": 1.27,
-          "width": 2.54
+          "drill": 0.0,
+          "height": 0.5,
+          "width": 0.5
         },
         "silk_line_width": 0.1,
         "silk_text_italic": false,
@@ -59,10 +59,30 @@
         }
       ],
       "drc_exclusions": [
+        [
+          "clearance|156042000|116200000|fef98222-42f4-443c-9224-f99b996ed493|8ee3669b-efa2-41bb-be1d-7684448c6a1e",
+          ""
+        ],
+        [
+          "clearance|158115000|116550000|fef98222-42f4-443c-9224-f99b996ed493|77886cf6-68e5-4ef7-b4b6-664c5a95f538",
+          ""
+        ],
         [
           "lib_footprint_mismatch|162470000|70480000|610ee3a1-cddb-4c0f-af4e-03d4d43dd8fd|00000000-0000-0000-0000-000000000000",
           ""
         ],
+        [
+          "malformed_courtyard|164500000|101850000|68f5159d-5eb4-43b3-b8ca-0ee0239bcfc1|00000000-0000-0000-0000-000000000000",
+          ""
+        ],
+        [
+          "malformed_courtyard|164500000|121850000|68f5159d-5eb4-43b3-b8ca-0ee0239bcfc1|00000000-0000-0000-0000-000000000000",
+          ""
+        ],
+        [
+          "malformed_courtyard|184500000|101850000|68f5159d-5eb4-43b3-b8ca-0ee0239bcfc1|00000000-0000-0000-0000-000000000000",
+          ""
+        ],
         [
           "silk_edge_clearance|129970000|113785000|fdd701de-0a27-4ebd-8fd1-96170ff11ac8|6adb97d8-cc31-4317-9e6a-e761bc319e0c",
           ""
@@ -98,6 +118,10 @@
         [
           "silk_edge_clearance|130000000|90540000|fdd701de-0a27-4ebd-8fd1-96170ff11ac8|06de41d1-e499-4c89-9869-ce3d63a3dd30",
           ""
+        ],
+        [
+          "solder_mask_bridge|156750000|115950000|2f58d55f-f271-47e4-90af-d672557af686|fef98222-42f4-443c-9224-f99b996ed493",
+          ""
         ]
       ],
       "meta": {
@@ -232,6 +256,7 @@
         0.25,
         0.3,
         0.5,
+        0.6,
         0.975
       ],
       "tuning_pattern_settings": {
@@ -676,7 +701,7 @@
           "group_by": false,
           "label": "FT Rotation Offset",
           "name": "FT Rotation Offset",
-          "show": false
+          "show": true
         },
         {
           "group_by": false,
@@ -689,11 +714,17 @@
           "label": "#",
           "name": "${ITEM_NUMBER}",
           "show": false
+        },
+        {
+          "group_by": false,
+          "label": "Sim.Pins",
+          "name": "Sim.Pins",
+          "show": false
         }
       ],
       "filter_string": "",
       "group_symbols": true,
-      "include_excluded_from_bom": true,
+      "include_excluded_from_bom": false,
       "name": "",
       "sort_asc": true,
       "sort_field": "Reference"
@@ -772,5 +803,7 @@
       "Connectivity"
     ]
   ],
-  "text_variables": {}
+  "text_variables": {
+    "PROJEKT_REV": "0.2"
+  }
 }