Pi port: serial transport, addressed ESP-NOW bridge, port 80

- Run app on Raspberry Pi: serial to ESP32 bridge at 912000 baud, /dev/ttyS0
- Remove ESP-NOW/MicroPython-only code from src (espnow, p2p, wifi, machine/Pin)
- Transport: always send 6-byte MAC + payload; optional to/destination_mac in API and WebSocket
- Settings and model DB use project paths (no root); fix sys.print_exception for CPython
- Preset/settings controllers use get_current_sender(); template paths for cwd=src
- Pipfile: run from src, PORT from env; scripts for port 80 (setcap) and test
- ESP32 bridge: receive 6-byte addr + payload, LRU peer management (20 max), handle ESP_ERR_ESPNOW_EXIST
- Add esp32/main.py, esp32/benchmark_peers.py, scripts/setup-port80.sh, scripts/test-port80.sh

Made-with: Cursor

src/controllers/settings.py

@@ -1,6 +1,5 @@
 from microdot import Microdot, send_file
 from settings import Settings
-import util.wifi as wifi
 import json
 
 controller = Microdot()
@@ -15,19 +14,18 @@ async def get_settings(request):
 
 @controller.get('/wifi/ap')
 async def get_ap_config(request):
-    """Get Access Point configuration."""
-    config = wifi.get_ap_config()
-    if config:
-        # Also get saved settings
-        config['saved_ssid'] = settings.get('wifi_ap_ssid')
-        config['saved_password'] = settings.get('wifi_ap_password')
-        config['saved_channel'] = settings.get('wifi_ap_channel')
-        return json.dumps(config), 200, {'Content-Type': 'application/json'}
-    return json.dumps({"error": "Failed to get AP config"}), 500
+    """Get saved AP configuration (Pi: no in-device AP)."""
+    config = {
+        'saved_ssid': settings.get('wifi_ap_ssid'),
+        'saved_password': settings.get('wifi_ap_password'),
+        'saved_channel': settings.get('wifi_ap_channel'),
+        'active': False,
+    }
+    return json.dumps(config), 200, {'Content-Type': 'application/json'}
 
 @controller.post('/wifi/ap')
 async def configure_ap(request):
-    """Configure Access Point."""
+    """Save AP configuration to settings (Pi: no in-device AP)."""
     try:
         data = request.json
         ssid = data.get('ssid')
@@ -43,18 +41,14 @@ async def configure_ap(request):
             if channel < 1 or channel > 11:
                 return json.dumps({"error": "Channel must be between 1 and 11"}), 400
         
-        # Save to settings
         settings['wifi_ap_ssid'] = ssid
         settings['wifi_ap_password'] = password
         if channel is not None:
             settings['wifi_ap_channel'] = channel
         settings.save()
         
-        # Configure AP
-        wifi.ap(ssid, password, channel)
-        
         return json.dumps({
-            "message": "AP configured successfully",
+            "message": "AP settings saved",
             "ssid": ssid,
             "channel": channel
         }), 200, {'Content-Type': 'application/json'}