Remove WiFi station (client) support

- Drop station connect/status/credentials from wifi util and settings API
- Remove station activation from main
- Remove station UI and JS from index, settings template, and help.js
- Device settings now only configure WiFi Access Point

Co-authored-by: Cursor <cursoragent@cursor.com>

src/controllers/settings.py

@@ -13,51 +13,6 @@ async def get_settings(request):
     # trigger MicroPython's "dict update sequence has wrong length" quirk.
     return json.dumps(settings), 200, {'Content-Type': 'application/json'}
 
-@controller.get('/wifi/station')
-async def get_station_status(request):
-    """Get WiFi station connection status."""
-    status = wifi.get_sta_status()
-    if status:
-        return json.dumps(status), 200, {'Content-Type': 'application/json'}
-    return json.dumps({"error": "Failed to get station status"}), 500
-
-@controller.post('/wifi/station')
-async def connect_station(request):
-    """Connect to WiFi station with credentials."""
-    try:
-        data = request.json
-        ssid = data.get('ssid')
-        password = data.get('password', '')
-        ip = data.get('ip')
-        gateway = data.get('gateway')
-        
-        if not ssid:
-            return json.dumps({"error": "SSID is required"}), 400
-        
-        # Save credentials to settings
-        settings['wifi_station_ssid'] = ssid
-        settings['wifi_station_password'] = password
-        if ip:
-            settings['wifi_station_ip'] = ip
-        if gateway:
-            settings['wifi_station_gateway'] = gateway
-        settings.save()
-        
-        # Attempt connection
-        result = wifi.connect(ssid, password, ip, gateway)
-        if result:
-            return json.dumps({
-                "message": "Connected successfully",
-                "ip": result[0],
-                "netmask": result[1],
-                "gateway": result[2],
-                "dns": result[3] if len(result) > 3 else None
-            }), 200, {'Content-Type': 'application/json'}
-        else:
-            return json.dumps({"error": "Failed to connect"}), 400
-    except Exception as e:
-        return json.dumps({"error": str(e)}), 500
-
 @controller.get('/wifi/ap')
 async def get_ap_config(request):
     """Get Access Point configuration."""
@@ -106,15 +61,6 @@ async def configure_ap(request):
     except Exception as e:
         return json.dumps({"error": str(e)}), 500
 
-@controller.get('/wifi/station/credentials')
-async def get_station_credentials(request):
-    """Get saved WiFi station credentials (without password)."""
-    return json.dumps({
-        "ssid": settings.get('wifi_station_ssid', ''),
-        "ip": settings.get('wifi_station_ip', ''),
-        "gateway": settings.get('wifi_station_gateway', '')
-    }), 200, {'Content-Type': 'application/json'}
-
 @controller.put('/settings')
 async def update_settings(request):
     """Update general settings."""