Rebuild: fix J1 orientation (90°), re-place all components, Freerouting orthogonal routing, 84 GND vias

- J1 rotated 90° so USB-C mating face faces left board edge
- All 23 components re-placed with proper spacing (8 courtyard overlaps remain — all ESP32 keepout)
- Freerouting v2.2.4: 21/25 nets autorouted cleanly
- 3V3/VBUS_SENSE manually routed on B.Cu for remaining 4 nets
- 84 GND stitching vias (grid + around_refs)
- DRC: 158 violations (0 tracks_crossing, 2 shorts, 84 via_dangling zone-fill dependent)
- Board 65x35mm, 2-layer

USB_PD_ESP32S3.kicad_prl

@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 0,
+    "active_layer": 2,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],
@@ -17,17 +17,17 @@
     },
     "prototype_zone_fills": false,
     "selection_filter": {
-      "dimensions": true,
-      "footprints": true,
-      "graphics": true,
-      "keepouts": true,
+      "dimensions": false,
+      "footprints": false,
+      "graphics": false,
+      "keepouts": false,
       "lockedItems": false,
-      "otherItems": true,
-      "pads": true,
-      "text": true,
+      "otherItems": false,
+      "pads": false,
+      "text": false,
       "tracks": true,
       "vias": true,
-      "zones": true
+      "zones": false
     },
     "visible_items": [
       "vias",