Add configurable baud rate for Adalight with dynamic FPS hint

Baud rate is now a first-class device field, passed through the full
stack: Device model → API schemas → routes → ProcessorManager →
AdalightClient. The frontend shows a baud rate dropdown (115200–2M)
for Adalight devices in both Add Device and Settings modals, with a
live "Max FPS ≈ N" hint computed from LED count and baud rate.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/api/routes/devices.py

@@ -49,6 +49,7 @@ def _device_to_response(device) -> DeviceResponse:
         device_type=device.device_type,
         led_count=device.led_count,
         enabled=device.enabled,
+        baud_rate=device.baud_rate,
         capabilities=sorted(get_device_capabilities(device.device_type)),
         calibration=CalibrationSchema(**calibration_to_dict(device.calibration)),
         created_at=device.created_at,
@@ -115,6 +116,7 @@ async def create_device(
             url=device_data.url,
             led_count=led_count,
             device_type=device_type,
+            baud_rate=device_data.baud_rate,
         )
 
         # Register in processor manager for health monitoring
@@ -124,6 +126,7 @@ async def create_device(
             led_count=device.led_count,
             calibration=device.calibration,
             device_type=device.device_type,
+            baud_rate=device.baud_rate,
         )
 
         return _device_to_response(device)
@@ -229,6 +232,7 @@ async def update_device(
             url=update_data.url,
             enabled=update_data.enabled,
             led_count=update_data.led_count,
+            baud_rate=update_data.baud_rate,
         )
 
         # Sync connection info in processor manager
@@ -237,6 +241,7 @@ async def update_device(
                 device_id,
                 device_url=update_data.url,
                 led_count=update_data.led_count,
+                baud_rate=update_data.baud_rate,
             )
         except ValueError:
             pass

server/src/wled_controller/api/schemas/devices.py

@@ -13,6 +13,7 @@ class DeviceCreate(BaseModel):
     url: str = Field(description="Device URL (e.g., http://192.168.1.100 or COM3)")
     device_type: str = Field(default="wled", description="LED device type (e.g., wled, adalight)")
     led_count: Optional[int] = Field(None, ge=1, le=10000, description="Number of LEDs (required for adalight)")
+    baud_rate: Optional[int] = Field(None, description="Serial baud rate (for adalight devices)")
 
 
 class DeviceUpdate(BaseModel):
@@ -22,6 +23,7 @@ class DeviceUpdate(BaseModel):
     url: Optional[str] = Field(None, description="Device URL or serial port")
     enabled: Optional[bool] = Field(None, description="Whether device is enabled")
     led_count: Optional[int] = Field(None, ge=1, le=10000, description="Number of LEDs (for devices with manual_led_count capability)")
+    baud_rate: Optional[int] = Field(None, description="Serial baud rate (for adalight devices)")
 
 
 class Calibration(BaseModel):
@@ -87,6 +89,7 @@ class DeviceResponse(BaseModel):
     device_type: str = Field(default="wled", description="LED device type")
     led_count: int = Field(description="Total number of LEDs")
     enabled: bool = Field(description="Whether device is enabled")
+    baud_rate: Optional[int] = Field(None, description="Serial baud rate")
     capabilities: List[str] = Field(default_factory=list, description="Device type capabilities")
     calibration: Optional[Calibration] = Field(None, description="Calibration configuration")
     created_at: datetime = Field(description="Creation timestamp")