Add LED type detection, improve device card layout

- Detect LED chip type (WS2812B, SK6812, etc.) from WLED /json/cfg
- Show RGBW/RGB channel indicator with colored squares on device card
- Move version, display index, LED count to subtitle row under device name
- Add remove button as × icon in top-right corner of card
- Hide latency from card display (still visible in health dot tooltip)
- Fix display layout overflow on narrow viewports
- Add wled_rgbw and wled_led_type to ProcessingState API schema

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

server/src/wled_controller/core/processor_manager.py

@@ -22,6 +22,19 @@ logger = get_logger(__name__)
 
 DEFAULT_STATE_CHECK_INTERVAL = 30  # seconds between health checks
 
+# WLED LED bus type codes from const.h → human-readable names
+WLED_LED_TYPES: Dict[int, str] = {
+    18: "WS2812 1ch", 19: "WS2812 1ch x3", 20: "WS2812 CCT", 21: "WS2812 WWA",
+    22: "WS2812B", 23: "GS8608", 24: "WS2811 400kHz", 25: "TM1829",
+    26: "UCS8903", 27: "APA106", 28: "FW1906", 29: "UCS8904",
+    30: "SK6812 RGBW", 31: "TM1814", 32: "WS2805", 33: "TM1914", 34: "SM16825",
+    40: "On/Off", 41: "PWM 1ch", 42: "PWM 2ch", 43: "PWM 3ch",
+    44: "PWM 4ch", 45: "PWM 5ch", 46: "PWM 6ch",
+    50: "WS2801", 51: "APA102", 52: "LPD8806", 53: "P9813", 54: "LPD6803",
+    65: "HUB75 HS", 66: "HUB75 QS",
+    80: "DDP RGB", 81: "E1.31", 82: "Art-Net", 88: "DDP RGBW", 89: "Art-Net RGBW",
+}
+
 
 @dataclass
 class ProcessingSettings:
@@ -48,6 +61,8 @@ class DeviceHealth:
     wled_name: Optional[str] = None
     wled_version: Optional[str] = None
     wled_led_count: Optional[int] = None
+    wled_rgbw: Optional[bool] = None
+    wled_led_type: Optional[str] = None
     error: Optional[str] = None
 
 
@@ -433,6 +448,8 @@ class ProcessorManager:
             "wled_name": h.wled_name,
             "wled_version": h.wled_version,
             "wled_led_count": h.wled_led_count,
+            "wled_rgbw": h.wled_rgbw,
+            "wled_led_type": h.wled_led_type,
             "wled_last_checked": h.last_checked,
             "wled_error": h.error,
             "test_mode": state.test_mode_active,
@@ -643,7 +660,23 @@ class ProcessorManager:
             response.raise_for_status()
             data = response.json()
             latency = (time.time() - start) * 1000
-            wled_led_count = data.get("leds", {}).get("count")
+            leds_info = data.get("leds", {})
+            wled_led_count = leds_info.get("count")
+
+            # Fetch LED type from /json/cfg once (it's static config)
+            wled_led_type = state.health.wled_led_type
+            if wled_led_type is None:
+                try:
+                    cfg = await client.get(f"{url}/json/cfg")
+                    cfg.raise_for_status()
+                    cfg_data = cfg.json()
+                    ins = cfg_data.get("hw", {}).get("led", {}).get("ins", [])
+                    if ins:
+                        type_code = ins[0].get("type", 0)
+                        wled_led_type = WLED_LED_TYPES.get(type_code, f"Type {type_code}")
+                except Exception as cfg_err:
+                    logger.debug(f"Could not fetch LED type for {device_id}: {cfg_err}")
+
             state.health = DeviceHealth(
                 online=True,
                 latency_ms=round(latency, 1),
@@ -651,6 +684,8 @@ class ProcessorManager:
                 wled_name=data.get("name"),
                 wled_version=data.get("ver"),
                 wled_led_count=wled_led_count,
+                wled_rgbw=leds_info.get("rgbw", False),
+                wled_led_type=wled_led_type,
                 error=None,
             )
         except Exception as e:
@@ -661,6 +696,8 @@ class ProcessorManager:
                 wled_name=state.health.wled_name,
                 wled_version=state.health.wled_version,
                 wled_led_count=state.health.wled_led_count,
+                wled_rgbw=state.health.wled_rgbw,
+                wled_led_type=state.health.wled_led_type,
                 error=str(e),
             )
 
@@ -684,5 +721,7 @@ class ProcessorManager:
             "wled_name": h.wled_name,
             "wled_version": h.wled_version,
             "wled_led_count": h.wled_led_count,
+            "wled_rgbw": h.wled_rgbw,
+            "wled_led_type": h.wled_led_type,
             "error": h.error,
         }