feat(devices): WiZ Connected LAN target type

Adds support for WiZ Connected (Philips' budget-tier) smart bulbs that
accept JSON commands as UDP datagrams on port 38899 with broadcast LAN
discovery on 255.255.255.255:38899.

Backend:
- WiZClient is a single-pixel UDP adapter: averages the incoming strip
  to one RGB triple and pushes it via setPilot with r/g/b params.
  Brightness folds into the RGB scaling so we burn one packet per frame
  instead of two.
- UDP fire-and-forget tolerates high update rates with no ack overhead,
  so the default rate gate is 50 ms (~20 Hz) -- 10x faster than Yeelight.
- supports_fast_send=True with a synchronous send_pixels_fast hot path.
- Broadcast discovery sends the standard registration envelope; bulb
  replies are parsed for IP+MAC and surfaced as DiscoveredDevice
  entries. Broadcast failures (no network, firewall) yield [] rather
  than raising.
- Health check sends getPilot and waits 1.5s for any reply on a
  one-shot UDP socket.
- WiZConfig joins the typed config union; Device storage gains a
  wiz_min_interval_ms field; full to_dict/from_dict/to_config wiring.
- 36 unit tests cover URL parsing, MAC extraction, strip averaging,
  rate limiting, fast-send hot path, provider validate/discover/health,
  and Device.to_config round-trip.

Frontend:
- 'wiz' in DEVICE_TYPE_KEYS (next to 'yeelight'), lightbulb icon
  (deliberate smart-bulb family grouping with Hue + Yeelight).
- isWizDevice predicate + per-type field show/hide in create and
  settings modals.
- Rate-limit number input (default 50 ms) in both modals with hint
  text noting the UDP fire-and-forget characteristic.
- Locale strings in en/ru/zh.

WiZ bulbs are reachable from the existing "Scan network" button -- no
new discovery UI affordance was needed.

TODO.md

@@ -695,9 +695,16 @@ Xiaomi/Yeelight bulbs, port 55443 TCP JSON. Direct protocol (no
 
 Philips' UDP-local budget tier. Port 38899 JSON UDP.
 
-- [ ] Reuse the discovery scaffolding from Yeelight (UDP broadcast pattern)
-- [ ] `WiZConfig` + `WiZLEDClient` + `WiZDeviceProvider`
-- [ ] Frontend additions + locales
+- [x] `WiZConfig` + `WiZClient` + `WiZDeviceProvider`
+- [x] UDP broadcast discovery on 255.255.255.255:38899 with the standard
+      `registration` envelope; replies parsed for IP+MAC.
+- [x] Sync `send_pixels_fast` for the hot loop (UDP is fire-and-forget,
+      no async needed). 50 ms default min interval → ~20 Hz cap.
+- [x] Health check sends `getPilot` and waits for any reply.
+- [x] Storage + API schemas + route handler wiring
+- [x] 36 unit tests
+- [ ] Frontend: WiZ in device-type picker + edit form
+- [ ] Locale strings (en/ru/zh)
 
 ### Phase 2 — Unified discovery + pairing UX layer
 

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

@@ -67,6 +67,7 @@ def _device_to_response(device) -> DeviceResponse:
         hue_client_key=device.hue_client_key,
         hue_entertainment_group_id=device.hue_entertainment_group_id,
         yeelight_min_interval_ms=device.yeelight_min_interval_ms,
+        wiz_min_interval_ms=device.wiz_min_interval_ms,
         spi_speed_hz=device.spi_speed_hz,
         spi_led_type=device.spi_led_type,
         chroma_device_type=device.chroma_device_type,
@@ -227,6 +228,11 @@ async def create_device(
                 if device_data.yeelight_min_interval_ms is not None
                 else 500
             ),
+            wiz_min_interval_ms=(
+                device_data.wiz_min_interval_ms
+                if device_data.wiz_min_interval_ms is not None
+                else 50
+            ),
             spi_speed_hz=device_data.spi_speed_hz or 800000,
             spi_led_type=device_data.spi_led_type or "WS2812B",
             chroma_device_type=device_data.chroma_device_type or "chromalink",
@@ -490,6 +496,7 @@ async def update_device(
             hue_client_key=update_data.hue_client_key,
             hue_entertainment_group_id=update_data.hue_entertainment_group_id,
             yeelight_min_interval_ms=update_data.yeelight_min_interval_ms,
+            wiz_min_interval_ms=update_data.wiz_min_interval_ms,
             spi_speed_hz=update_data.spi_speed_hz,
             spi_led_type=update_data.spi_led_type,
             chroma_device_type=update_data.chroma_device_type,

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

@@ -70,6 +70,13 @@ class DeviceCreate(BaseModel):
         le=10000,
         description="Yeelight client-side rate limit between commands in ms (default 500)",
     )
+    # WiZ fields
+    wiz_min_interval_ms: Optional[int] = Field(
+        None,
+        ge=0,
+        le=10000,
+        description="WiZ client-side rate limit between commands in ms (default 50)",
+    )
     # SPI Direct fields
     spi_speed_hz: Optional[int] = Field(
         None, ge=100000, le=4000000, description="SPI clock speed in Hz"
@@ -161,6 +168,9 @@ class DeviceUpdate(BaseModel):
     yeelight_min_interval_ms: Optional[int] = Field(
         None, ge=0, le=10000, description="Yeelight client-side rate limit in ms"
     )
+    wiz_min_interval_ms: Optional[int] = Field(
+        None, ge=0, le=10000, description="WiZ client-side rate limit in ms"
+    )
     spi_speed_hz: Optional[int] = Field(None, ge=100000, le=4000000, description="SPI clock speed")
     spi_led_type: Optional[str] = Field(None, description="LED chipset type")
     chroma_device_type: Optional[str] = Field(None, description="Chroma peripheral type")
@@ -333,6 +343,7 @@ class DeviceResponse(BaseModel):
     yeelight_min_interval_ms: int = Field(
         default=500, description="Yeelight client-side rate limit in ms"
     )
+    wiz_min_interval_ms: int = Field(default=50, description="WiZ client-side rate limit in ms")
     spi_speed_hz: int = Field(default=800000, description="SPI clock speed in Hz")
     spi_led_type: str = Field(default="WS2812B", description="LED chipset type")
     chroma_device_type: str = Field(default="chromalink", description="Chroma peripheral type")

server/src/ledgrab/core/devices/device_config.py

@@ -88,6 +88,18 @@ class YeelightConfig(BaseDeviceConfig):
     yeelight_min_interval_ms: int = 500
 
 
+@dataclass(frozen=True)
+class WiZConfig(BaseDeviceConfig):
+    """WiZ Connected (Philips budget-tier) UDP LAN bulb.
+
+    ``wiz_min_interval_ms`` is a client-side rate gate. WiZ tolerates much
+    higher rates than Yeelight (UDP, no ack) so the default is 50 ms ≈ 20 Hz.
+    """
+
+    device_type: Literal["wiz"] = "wiz"
+    wiz_min_interval_ms: int = 50
+
+
 @dataclass(frozen=True)
 class SPIConfig(BaseDeviceConfig):
     device_type: Literal["spi"] = "spi"
@@ -159,6 +171,7 @@ DeviceConfig = Union[
     WLEDConfig,
     DDPConfig,
     YeelightConfig,
+    WiZConfig,
     AdalightConfig,
     AmbiLEDConfig,
     DMXConfig,

server/src/ledgrab/core/devices/led_client.py

@@ -342,6 +342,10 @@ def _register_builtin_providers():
 
     register_provider(YeelightDeviceProvider())
 
+    from ledgrab.core.devices.wiz_provider import WiZDeviceProvider
+
+    register_provider(WiZDeviceProvider())
+
     # BLE support is optional — only register the provider if the ``bleak``
     # extra is installed. Importing the provider itself is safe (it doesn't
     # import bleak at module load), but we still want a clean skip on

server/src/ledgrab/core/devices/wiz_client.py

@@ -0,0 +1,323 @@
+"""WiZ Connected (Philips' budget tier) LAN LED client.
+
+WiZ bulbs accept JSON commands as UDP datagrams on port 38899. There's no
+persistent connection — every frame is fire-and-forget — so the client is
+simpler than Yeelight and tolerates higher update rates.
+
+URL scheme: ``wiz://<host>[:port]`` or bare ``<host>``. Default port 38899.
+
+Discovery: UDP broadcast of a ``registration`` envelope on
+255.255.255.255:38899 — bulbs reply unicast with their MAC and state.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import json
+import socket
+import time
+from datetime import datetime, timezone
+from typing import List, Optional, Tuple, Union
+from urllib.parse import urlparse
+
+import numpy as np
+
+from ledgrab.core.devices.led_client import DeviceHealth, LEDClient
+from ledgrab.utils import get_logger
+
+logger = get_logger(__name__)
+
+WIZ_PORT = 38899
+DEFAULT_MIN_INTERVAL_S = 0.05  # ~20 Hz cap; bulbs tolerate it, UDP costs nothing
+
+
+def parse_wiz_url(url: str) -> Tuple[str, int]:
+    """Pull ``(host, port)`` from ``wiz://host[:port]`` or a bare ``host[:port]``."""
+    if not url:
+        raise ValueError("WiZ URL is empty")
+    raw = url.strip()
+    if "://" in raw:
+        parsed = urlparse(raw)
+        host = parsed.hostname or ""
+        port = parsed.port or WIZ_PORT
+    else:
+        parsed = urlparse(f"wiz://{raw}")
+        host = parsed.hostname or ""
+        port = parsed.port or WIZ_PORT
+    if not host:
+        raise ValueError(f"WiZ URL has no host: {url!r}")
+    return host, port
+
+
+def _average_color(
+    pixels: Union[List[Tuple[int, int, int]], np.ndarray],
+) -> Tuple[int, int, int]:
+    """Reduce an N-pixel strip to one average RGB triple."""
+    if isinstance(pixels, np.ndarray):
+        if pixels.size == 0:
+            return (0, 0, 0)
+        arr = pixels.reshape(-1, 3) if pixels.ndim > 1 else pixels[:3].reshape(1, 3)
+        mean = arr.mean(axis=0)
+        return int(mean[0]), int(mean[1]), int(mean[2])
+    if not pixels:
+        return (0, 0, 0)
+    total_r = total_g = total_b = 0
+    for r, g, b in pixels:
+        total_r += r
+        total_g += g
+        total_b += b
+    n = len(pixels)
+    return total_r // n, total_g // n, total_b // n
+
+
+class _WiZProtocol(asyncio.DatagramProtocol):
+    """Minimal protocol: sends only, drops any inbound packets silently."""
+
+    def connection_made(self, transport):
+        self.transport = transport
+
+    def datagram_received(self, data, addr):
+        # WiZ bulbs reply to setPilot with a small ack. We don't need it for
+        # ambilight streaming — just drop the bytes on the floor.
+        pass
+
+    def error_received(self, exc):
+        # UDP errors (ICMP unreachable, route changes) surface here. Log
+        # once and let the next frame retry; transient drops are normal.
+        logger.debug("WiZ UDP error: %s", exc)
+
+
+class WiZClient(LEDClient):
+    """LEDClient for a single WiZ Connected bulb on the LAN."""
+
+    def __init__(
+        self,
+        url: str,
+        led_count: int = 1,
+        *,
+        min_interval_s: float = DEFAULT_MIN_INTERVAL_S,
+    ):
+        host, port = parse_wiz_url(url)
+        self._host = host
+        self._port = port
+        self._led_count = led_count
+        self._min_interval_s = max(0.0, min_interval_s)
+        self._transport: Optional[asyncio.DatagramTransport] = None
+        self._protocol: Optional[_WiZProtocol] = None
+        self._connected = False
+        self._next_tx_at: float = 0.0
+
+    @property
+    def host(self) -> str:
+        return self._host
+
+    @property
+    def port(self) -> int:
+        return self._port
+
+    @property
+    def is_connected(self) -> bool:
+        return self._connected and self._transport is not None
+
+    @property
+    def device_led_count(self) -> Optional[int]:
+        return self._led_count or None
+
+    async def connect(self) -> bool:
+        if self._connected and self._transport is not None:
+            return True
+        loop = asyncio.get_running_loop()
+        try:
+            transport, protocol = await loop.create_datagram_endpoint(
+                _WiZProtocol, remote_addr=(self._host, self._port)
+            )
+        except OSError as exc:
+            raise RuntimeError(f"Failed to open UDP to WiZ at {self._host}: {exc}") from exc
+        self._transport = transport
+        self._protocol = protocol  # type: ignore[assignment]
+        self._connected = True
+        logger.info("WiZClient connected to %s:%d", self._host, self._port)
+        return True
+
+    async def close(self) -> None:
+        if self._transport is not None:
+            try:
+                self._transport.close()
+            except OSError:
+                pass
+        self._transport = None
+        self._protocol = None
+        self._connected = False
+
+    def _send_json(self, payload: dict) -> None:
+        """Fire one JSON UDP packet. Caller must hold an open transport."""
+        assert self._transport is not None
+        raw = json.dumps(payload, separators=(",", ":")).encode("utf-8")
+        self._transport.sendto(raw)
+
+    async def send_pixels(
+        self,
+        pixels: Union[List[Tuple[int, int, int]], np.ndarray],
+        brightness: int = 255,
+    ) -> bool:
+        """Average the pixel strip to one color and push ``setPilot``."""
+        if not self.is_connected:
+            raise RuntimeError("WiZClient not connected")
+        now = time.monotonic()
+        if now < self._next_tx_at:
+            return True
+        r, g, b = _average_color(pixels)
+        # WiZ has a separate "dimming" param (1-100). For ambilight we keep
+        # things linear and fold brightness into the RGB scalars — that's
+        # what the bulb shows anyway with state=on.
+        if brightness < 255:
+            scale = max(0, min(255, brightness)) / 255.0
+            r = int(r * scale)
+            g = int(g * scale)
+            b = int(b * scale)
+        self._send_json({"method": "setPilot", "params": {"r": r, "g": g, "b": b}})
+        self._next_tx_at = now + self._min_interval_s
+        return True
+
+    def send_pixels_fast(
+        self,
+        pixels: Union[List[Tuple[int, int, int]], np.ndarray],
+        brightness: int = 255,
+    ) -> None:
+        """Synchronous variant for the hot path. Same shape as send_pixels."""
+        if not self.is_connected or self._transport is None:
+            raise RuntimeError("WiZClient not connected")
+        now = time.monotonic()
+        if now < self._next_tx_at:
+            return
+        r, g, b = _average_color(pixels)
+        if brightness < 255:
+            scale = max(0, min(255, brightness)) / 255.0
+            r = int(r * scale)
+            g = int(g * scale)
+            b = int(b * scale)
+        self._send_json({"method": "setPilot", "params": {"r": r, "g": g, "b": b}})
+        self._next_tx_at = now + self._min_interval_s
+
+    @property
+    def supports_fast_send(self) -> bool:
+        # WiZ is UDP fire-and-forget — perfect candidate for the sync hot path.
+        return True
+
+    async def set_color(self, r: int, g: int, b: int) -> None:
+        if not self.is_connected:
+            raise RuntimeError("WiZClient not connected")
+        self._send_json({"method": "setPilot", "params": {"r": r, "g": g, "b": b}})
+
+    async def set_brightness(self, brightness_0_100: int) -> None:
+        if not self.is_connected:
+            raise RuntimeError("WiZClient not connected")
+        clamped = max(10, min(100, brightness_0_100))  # WiZ rejects <10
+        self._send_json({"method": "setPilot", "params": {"dimming": clamped}})
+
+    async def set_power(self, on: bool) -> None:
+        if not self.is_connected:
+            raise RuntimeError("WiZClient not connected")
+        self._send_json({"method": "setPilot", "params": {"state": on}})
+
+    @classmethod
+    async def check_health(
+        cls,
+        url: str,
+        http_client,
+        prev_health: Optional[DeviceHealth] = None,
+    ) -> DeviceHealth:
+        """Send a getPilot and wait briefly for any reply on a one-shot socket."""
+        now = datetime.now(timezone.utc)
+        try:
+            host, port = parse_wiz_url(url)
+        except ValueError as exc:
+            return DeviceHealth(online=False, last_checked=now, error=str(exc))
+        loop = asyncio.get_running_loop()
+        sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
+        sock.setblocking(False)
+        try:
+            sock.bind(("", 0))
+            start = loop.time()
+            await loop.sock_sendto(sock, b'{"method":"getPilot","params":{}}', (host, port))
+            try:
+                await asyncio.wait_for(loop.sock_recv(sock, 4096), timeout=1.5)
+            except asyncio.TimeoutError:
+                return DeviceHealth(
+                    online=False,
+                    last_checked=now,
+                    error=f"No WiZ reply from {host}:{port} within 1.5s",
+                )
+            latency_ms = (loop.time() - start) * 1000.0
+            return DeviceHealth(online=True, latency_ms=latency_ms, last_checked=now)
+        except OSError as exc:
+            return DeviceHealth(
+                online=False,
+                last_checked=now,
+                error=f"WiZ probe failed for {host}: {exc}",
+            )
+        finally:
+            sock.close()
+
+
+# ============================================================================
+# Broadcast discovery
+# ============================================================================
+
+
+_DISCOVERY_REQUEST = (
+    b'{"method":"registration","params":{"phoneMac":"AAAAAAAAAAAA","register":false,'
+    b'"phoneIp":"0.0.0.0","id":"1"}}'
+)
+
+
+def _extract_mac(payload: dict) -> str:
+    """Pull a bulb MAC out of the standard ``result`` envelope, if present."""
+    result = payload.get("result")
+    if isinstance(result, dict):
+        return str(result.get("mac", "")).lower()
+    return ""
+
+
+async def discover_wiz_bulbs(timeout: float = 2.0) -> List[dict]:
+    """Broadcast a registration probe and collect bulb replies.
+
+    Returns a list of ``{"ip": ..., "mac": ..., "raw": <parsed_json>}`` dicts.
+    Multicast / broadcast failures (no network, firewall) raise OSError;
+    callers handle that by returning an empty discovery list.
+    """
+    loop = asyncio.get_running_loop()
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
+    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+    sock.setblocking(False)
+    try:
+        sock.bind(("", 0))
+        await loop.sock_sendto(sock, _DISCOVERY_REQUEST, ("255.255.255.255", WIZ_PORT))
+        results: list[dict] = []
+        seen_ips: set[str] = set()
+        deadline = loop.time() + timeout
+        while True:
+            remaining = deadline - loop.time()
+            if remaining <= 0:
+                break
+            try:
+                raw, addr = await asyncio.wait_for(
+                    loop.sock_recvfrom(sock, 2048),
+                    timeout=remaining,
+                )
+            except asyncio.TimeoutError:
+                break
+            ip = addr[0]
+            if ip in seen_ips:
+                continue
+            try:
+                payload = json.loads(raw.decode("utf-8", errors="replace"))
+            except (json.JSONDecodeError, UnicodeDecodeError):
+                continue
+            if not isinstance(payload, dict):
+                continue
+            seen_ips.add(ip)
+            results.append({"ip": ip, "mac": _extract_mac(payload), "raw": payload})
+        return results
+    finally:
+        sock.close()

server/src/ledgrab/core/devices/wiz_provider.py

@@ -0,0 +1,92 @@
+"""WiZ Connected device provider — LAN-discoverable Philips budget-tier bulbs."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, List
+
+from ledgrab.core.devices.led_client import (
+    DeviceHealth,
+    DiscoveredDevice,
+    LEDClient,
+    LEDDeviceProvider,
+    ProviderDeps,
+)
+from ledgrab.core.devices.wiz_client import (
+    WiZClient,
+    discover_wiz_bulbs,
+    parse_wiz_url,
+)
+from ledgrab.utils import get_logger
+
+if TYPE_CHECKING:
+    from ledgrab.core.devices.device_config import WiZConfig
+
+logger = get_logger(__name__)
+
+
+class WiZDeviceProvider(LEDDeviceProvider):
+    """Provider for WiZ Connected (Philips budget-tier) bulbs.
+
+    Single-pixel device, identical adaptation shape as Yeelight/Hue.
+    """
+
+    @property
+    def device_type(self) -> str:
+        return "wiz"
+
+    @property
+    def capabilities(self) -> set:
+        return {
+            "manual_led_count",
+            "power_control",
+            "brightness_control",
+            "static_color",
+            "health_check",
+            "single_pixel",
+        }
+
+    def create_client(self, config: "WiZConfig", *, deps: ProviderDeps) -> LEDClient:
+        return WiZClient(
+            config.device_url,
+            led_count=config.led_count,
+            min_interval_s=max(0.0, config.wiz_min_interval_ms / 1000.0),
+        )
+
+    async def check_health(self, url: str, http_client, prev_health=None) -> DeviceHealth:
+        return await WiZClient.check_health(url, http_client, prev_health)
+
+    async def validate_device(self, url: str) -> dict:
+        try:
+            host, port = parse_wiz_url(url)
+        except ValueError as exc:
+            raise ValueError(f"Invalid WiZ URL: {exc}") from exc
+        logger.info("WiZ device URL validated: host=%s port=%d", host, port)
+        return {}
+
+    async def discover(self, timeout: float = 3.0) -> List[DiscoveredDevice]:
+        try:
+            bulbs = await discover_wiz_bulbs(timeout=min(timeout, 5.0))
+        except (OSError, RuntimeError) as exc:
+            logger.warning("WiZ discovery failed: %s", exc)
+            return []
+
+        results: List[DiscoveredDevice] = []
+        for bulb in bulbs:
+            ip = bulb.get("ip", "")
+            if not ip:
+                continue
+            url = f"wiz://{ip}"
+            mac = bulb.get("mac", "")
+            results.append(
+                DiscoveredDevice(
+                    name=f"WiZ {mac[-6:]}" if mac else "WiZ bulb",
+                    url=url,
+                    device_type="wiz",
+                    ip=ip,
+                    mac=mac,
+                    led_count=None,
+                    version=None,
+                )
+            )
+        logger.info("WiZ broadcast scan found %d bulb(s)", len(results))
+        return results

server/src/ledgrab/static/js/core/api.ts

@@ -163,6 +163,10 @@ export function isYeelightDevice(type: string) {
     return type === 'yeelight';
 }
 
+export function isWizDevice(type: string) {
+    return type === 'wiz';
+}
+
 export function isUsbhidDevice(type: string) {
     return type === 'usbhid';
 }

server/src/ledgrab/static/js/core/icons.ts

@@ -48,7 +48,7 @@ const _deviceTypeIcons        = {
     wled: _svg(P.wifi), adalight: _svg(P.usb), ambiled: _svg(P.usb),
     mqtt: _svg(P.send), ws: _svg(P.globe), openrgb: _svg(P.palette),
     dmx: _svg(P.radio), ddp: _svg(P.send), mock: _svg(P.wrench),
-    espnow: _svg(P.radio), hue: _svg(P.lightbulb), yeelight: _svg(P.lightbulb),
+    espnow: _svg(P.radio), hue: _svg(P.lightbulb), yeelight: _svg(P.lightbulb), wiz: _svg(P.lightbulb),
     usbhid: _svg(P.usb),
     spi: _svg(P.plug), chroma: _svg(P.zap), gamesense: _svg(P.target),
     ble: _svg(P.bluetooth),

server/src/ledgrab/static/js/features/device-discovery.ts

@@ -7,7 +7,7 @@ import {
     _discoveryCache, set_discoveryCache,
     csptCache,
 } from '../core/state.ts';
-import { API_BASE, fetchWithAuth, isSerialDevice, isMockDevice, isMqttDevice, isWsDevice, isOpenrgbDevice, isDmxDevice, isDdpDevice, isEspnowDevice, isHueDevice, isYeelightDevice, isBleDevice, isUsbhidDevice, isSpiDevice, isChromaDevice, isGameSenseDevice, isGroupDevice, escapeHtml } from '../core/api.ts';
+import { API_BASE, fetchWithAuth, isSerialDevice, isMockDevice, isMqttDevice, isWsDevice, isOpenrgbDevice, isDmxDevice, isDdpDevice, isEspnowDevice, isHueDevice, isYeelightDevice, isWizDevice, isBleDevice, isUsbhidDevice, isSpiDevice, isChromaDevice, isGameSenseDevice, isGroupDevice, escapeHtml } from '../core/api.ts';
 import { devicesCache } from '../core/state.ts';
 import { t } from '../core/i18n.ts';
 import { showToast, desktopFocus } from '../core/ui.ts';
@@ -42,6 +42,7 @@ class AddDeviceModal extends Modal {
             bleFamily: (document.getElementById('device-ble-family') as HTMLSelectElement)?.value || '',
             bleGoveeKey: (document.getElementById('device-ble-govee-key') as HTMLInputElement)?.value || '',
             yeelightMinInterval: (document.getElementById('device-yeelight-min-interval') as HTMLInputElement)?.value || '500',
+            wizMinInterval: (document.getElementById('device-wiz-min-interval') as HTMLInputElement)?.value || '50',
             groupChildren: JSON.stringify(_getGroupChildIds('device')),
             groupMode: (document.getElementById('device-group-mode-select') as HTMLSelectElement)?.value || 'sequence',
         };
@@ -52,7 +53,7 @@ const addDeviceModal = new AddDeviceModal();
 
 /* ── Icon-grid type selector ──────────────────────────────────── */
 
-const DEVICE_TYPE_KEYS = ['wled', 'adalight', 'ambiled', 'mqtt', 'ws', 'openrgb', 'dmx', 'ddp', 'espnow', 'hue', 'yeelight', 'ble', 'usbhid', 'spi', 'chroma', 'gamesense', 'group', 'mock'];
+const DEVICE_TYPE_KEYS = ['wled', 'adalight', 'ambiled', 'mqtt', 'ws', 'openrgb', 'dmx', 'ddp', 'espnow', 'hue', 'yeelight', 'wiz', 'ble', 'usbhid', 'spi', 'chroma', 'gamesense', 'group', 'mock'];
 
 function _buildDeviceTypeItems() {
     return DEVICE_TYPE_KEYS.map(key => ({
@@ -280,6 +281,7 @@ export function onDeviceTypeChanged() {
     _showEspnowFields(false);
     _showHueFields(false);
     _showYeelightFields(false);
+    _showWizFields(false);
     _showBleFields(false);
     _showSpiFields(false);
     _showChromaFields(false);
@@ -479,6 +481,28 @@ export function onDeviceTypeChanged() {
         } else {
             scanForDevices();
         }
+    } else if (isWizDevice(deviceType)) {
+        // WiZ: UDP fire-and-forget on port 38899. Show URL (LAN IP), LED
+        // count (controls source mapping; the bulb averages to one color),
+        // rate-limit ms. Discovery uses UDP broadcast — same scan flow.
+        urlGroup.style.display = '';
+        urlInput.setAttribute('required', '');
+        serialGroup.style.display = 'none';
+        serialSelect.removeAttribute('required');
+        ledCountGroup.style.display = '';
+        baudRateGroup.style.display = 'none';
+        if (ledTypeGroup) ledTypeGroup.style.display = 'none';
+        if (sendLatencyGroup) sendLatencyGroup.style.display = 'none';
+        if (scanBtn) scanBtn.style.display = '';
+        _showWizFields(true);
+        if (urlLabel) urlLabel.textContent = t('device.wiz.url') || 'IP Address:';
+        if (urlHint) urlHint.textContent = t('device.wiz.url.hint') || 'LAN IP of the WiZ bulb. UDP port 38899 is the protocol default.';
+        urlInput.placeholder = t('device.wiz.url.placeholder') || '192.168.1.50';
+        if (deviceType in _discoveryCache) {
+            _renderDiscoveryList();
+        } else {
+            scanForDevices();
+        }
     } else if (isBleDevice(deviceType)) {
         // BLE: show URL (ble://<address>), LED count, protocol family picker,
         // and a Govee-only AES key field that toggles with the family selection.
@@ -825,6 +849,13 @@ export function showAddDevice(presetType: any = null, cloneData: any = null) {
                 ymi.value = String(cloneData.yeelight_min_interval_ms);
             }
         }
+        // Prefill WiZ fields
+        if (isWizDevice(presetType)) {
+            const wmi = document.getElementById('device-wiz-min-interval') as HTMLInputElement;
+            if (wmi && cloneData.wiz_min_interval_ms != null) {
+                wmi.value = String(cloneData.wiz_min_interval_ms);
+            }
+        }
         // Prefill CSPT template selector (after fetch completes)
         if (cloneData.default_css_processing_template_id) {
             csptCache.fetch().then(() => {
@@ -1031,6 +1062,11 @@ export async function handleAddDevice(event: any) {
             const parsed = parseInt(raw || '500', 10);
             body.yeelight_min_interval_ms = Number.isFinite(parsed) ? parsed : 500;
         }
+        if (isWizDevice(deviceType)) {
+            const raw = (document.getElementById('device-wiz-min-interval') as HTMLInputElement)?.value;
+            const parsed = parseInt(raw || '50', 10);
+            body.wiz_min_interval_ms = Number.isFinite(parsed) ? parsed : 50;
+        }
         if (isBleDevice(deviceType)) {
             body.ble_family = (document.getElementById('device-ble-family') as HTMLSelectElement)?.value || 'sp110e';
             const goveeKey = (document.getElementById('device-ble-govee-key') as HTMLInputElement)?.value?.trim();
@@ -1389,6 +1425,11 @@ function _showYeelightFields(show: boolean) {
     if (el) el.style.display = show ? '' : 'none';
 }
 
+function _showWizFields(show: boolean) {
+    const el = document.getElementById('device-wiz-min-interval-group') as HTMLElement | null;
+    if (el) el.style.display = show ? '' : 'none';
+}
+
 // Tracks whether the BLE fields are currently shown — avoids reading
 // style.display strings in _updateBleGoveeKeyVisibility.
 let _bleFieldsVisible = false;

server/src/ledgrab/static/js/features/devices.ts

@@ -6,7 +6,7 @@ import {
     _deviceBrightnessCache, updateDeviceBrightness,
     csptCache,
 } from '../core/state.ts';
-import { API_BASE, getHeaders, fetchWithAuth, escapeHtml, isSerialDevice, isMockDevice, isMqttDevice, isWsDevice, isOpenrgbDevice, isDmxDevice, isDdpDevice, isYeelightDevice, isBleDevice, isGroupDevice } from '../core/api.ts';
+import { API_BASE, getHeaders, fetchWithAuth, escapeHtml, isSerialDevice, isMockDevice, isMqttDevice, isWsDevice, isOpenrgbDevice, isDmxDevice, isDdpDevice, isYeelightDevice, isWizDevice, isBleDevice, isGroupDevice } from '../core/api.ts';
 import { devicesCache } from '../core/state.ts';
 import { _fetchOpenrgbZones, _getCheckedZones, _splitOpenrgbZone, _getZoneMode, ensureDmxProtocolIconSelect, destroyDmxProtocolIconSelect, ensureDdpColorOrderIconSelect, destroyDdpColorOrderIconSelect, ensureSpiLedTypeIconSelect, destroySpiLedTypeIconSelect, ensureGameSenseDeviceTypeIconSelect, destroyGameSenseDeviceTypeIconSelect, addGroupChildSettingsWithId as _addGroupChildSettingsWithId, ensureGroupModeIconSelect, destroyGroupModeIconSelect, ensureBleFamilyIconSelect, destroyBleFamilyIconSelect } from './device-discovery.ts';
 import { t } from '../core/i18n.ts';
@@ -96,6 +96,7 @@ class DeviceSettingsModal extends Modal {
             bleFamily: (document.getElementById('settings-ble-family') as HTMLSelectElement | null)?.value || '',
             bleGoveeKey: (document.getElementById('settings-ble-govee-key') as HTMLInputElement | null)?.value || '',
             yeelightMinInterval: (document.getElementById('settings-yeelight-min-interval') as HTMLInputElement | null)?.value || '500',
+            wizMinInterval: (document.getElementById('settings-wiz-min-interval') as HTMLInputElement | null)?.value || '50',
             csptId: (document.getElementById('settings-css-processing-template') as HTMLSelectElement | null)?.value || '',
         };
     }
@@ -648,6 +649,24 @@ export async function showSettings(deviceId: any) {
             if (yeelightMinIntervalGroup) (yeelightMinIntervalGroup as HTMLElement).style.display = 'none';
         }
 
+        // WiZ-specific fields — UDP fire-and-forget, no wire-level rate cap
+        // beyond what the bulb's MCU can keep up with. Default 50 ms ≈ 20 Hz
+        // is comfortable; users can push lower if they want to experiment.
+        const wizMinIntervalGroup = document.getElementById('settings-wiz-min-interval-group');
+        if (isWizDevice(device.device_type)) {
+            if (wizMinIntervalGroup) (wizMinIntervalGroup as HTMLElement).style.display = '';
+            const wmi = device.wiz_min_interval_ms ?? 50;
+            (document.getElementById('settings-wiz-min-interval') as HTMLInputElement).value = String(wmi);
+            // Relabel URL field as IP Address (same pattern as Yeelight/DMX/DDP)
+            const urlLabel5 = urlGroup.querySelector('label[for="settings-device-url"]') as HTMLElement | null;
+            const urlHint5 = urlGroup.querySelector('.input-hint') as HTMLElement | null;
+            if (urlLabel5) urlLabel5.textContent = t('device.wiz.url');
+            if (urlHint5) urlHint5.textContent = t('device.wiz.url.hint');
+            urlInput.placeholder = t('device.wiz.url.placeholder') || '192.168.1.50';
+        } else {
+            if (wizMinIntervalGroup) (wizMinIntervalGroup as HTMLElement).style.display = 'none';
+        }
+
         // BLE-specific fields — exposed in the settings modal so the user
         // can fix a wrong protocol family pick without deleting+recreating
         // the device. Uses the shared IconSelect grid (project rule bans
@@ -789,6 +808,11 @@ export async function saveDeviceSettings() {
             const parsed = parseInt(raw || '500', 10);
             body.yeelight_min_interval_ms = Number.isFinite(parsed) ? parsed : 500;
         }
+        if (isWizDevice(settingsModal.deviceType)) {
+            const raw = (document.getElementById('settings-wiz-min-interval') as HTMLInputElement | null)?.value;
+            const parsed = parseInt(raw || '50', 10);
+            body.wiz_min_interval_ms = Number.isFinite(parsed) ? parsed : 50;
+        }
         if (isBleDevice(settingsModal.deviceType)) {
             body.ble_family = (document.getElementById('settings-ble-family') as HTMLSelectElement | null)?.value || 'sp110e';
             const goveeKey = (document.getElementById('settings-ble-govee-key') as HTMLInputElement | null)?.value?.trim() || '';

server/src/ledgrab/static/js/types.ts

@@ -47,7 +47,7 @@ export function bindableColorSourceId(b: BindableColor | undefined): string {
 
 export type DeviceType =
     | 'wled' | 'adalight' | 'ambiled' | 'mock' | 'mqtt' | 'ws'
-    | 'openrgb' | 'dmx' | 'ddp' | 'espnow' | 'hue' | 'yeelight'
+    | 'openrgb' | 'dmx' | 'ddp' | 'espnow' | 'hue' | 'yeelight' | 'wiz'
     | 'ble' | 'usbhid' | 'spi'
     | 'chroma' | 'gamesense' | 'group';
 
@@ -77,6 +77,7 @@ export interface Device {
     hue_client_key: string;
     hue_entertainment_group_id: string;
     yeelight_min_interval_ms: number;
+    wiz_min_interval_ms: number;
     spi_speed_hz: number;
     spi_led_type: string;
     chroma_device_type: string;

server/src/ledgrab/static/locales/en.json

@@ -204,6 +204,13 @@
   "device.yeelight.url.placeholder": "192.168.1.50",
   "device.yeelight_min_interval": "Min Update Interval:",
   "device.yeelight_min_interval.hint": "Client-side rate limit between commands in ms. Default 500 ms keeps bulbs under their ~1 cmd/sec cap; lower values risk throttling.",
+  "device.type.wiz": "WiZ",
+  "device.type.wiz.desc": "WiZ Connected (Philips) UDP LAN bulb",
+  "device.wiz.url": "IP Address:",
+  "device.wiz.url.hint": "LAN IP of the WiZ bulb. UDP port 38899 is the protocol default.",
+  "device.wiz.url.placeholder": "192.168.1.50",
+  "device.wiz_min_interval": "Min Update Interval:",
+  "device.wiz_min_interval.hint": "Client-side rate limit between commands in ms. UDP fire-and-forget tolerates fast updates; default 50 ms ≈ 20 Hz.",
   "device.type.ble": "BLE LED Controller",
   "device.type.ble.desc": "Bluetooth LE strips: SP110E, Triones, Zengge, Govee (whole-strip color)",
   "device.ble.url": "BLE Address:",

server/src/ledgrab/static/locales/ru.json

@@ -259,6 +259,13 @@
   "device.yeelight.url.placeholder": "192.168.1.50",
   "device.yeelight_min_interval": "Мин. интервал обновления:",
   "device.yeelight_min_interval.hint": "Локальный лимит частоты команд (мс). По умолчанию 500 мс держит лампу под ограничением ~1 команда/сек; меньшие значения могут вызвать троттлинг.",
+  "device.type.wiz": "WiZ",
+  "device.type.wiz.desc": "Лампа WiZ Connected (Philips) по UDP",
+  "device.wiz.url": "IP-адрес:",
+  "device.wiz.url.hint": "IP-адрес лампы WiZ в локальной сети. UDP-порт 38899 — по умолчанию.",
+  "device.wiz.url.placeholder": "192.168.1.50",
+  "device.wiz_min_interval": "Мин. интервал обновления:",
+  "device.wiz_min_interval.hint": "Локальный лимит частоты команд (мс). UDP fire-and-forget справляется с быстрыми обновлениями; по умолчанию 50 мс ≈ 20 Гц.",
   "device.type.ble": "BLE LED контроллер",
   "device.type.ble.desc": "Bluetooth LE ленты: SP110E, Triones, Zengge, Govee (один цвет на всю ленту)",
   "device.ble.url": "BLE адрес:",

server/src/ledgrab/static/locales/zh.json

@@ -257,6 +257,13 @@
   "device.yeelight.url.placeholder": "192.168.1.50",
   "device.yeelight_min_interval": "最小更新间隔:",
   "device.yeelight_min_interval.hint": "客户端命令速率限制（毫秒）。默认 500 毫秒可使灯泡保持在约 1 cmd/sec 限制下；较低的值可能导致节流。",
+  "device.type.wiz": "WiZ",
+  "device.type.wiz.desc": "WiZ Connected (飞利浦) UDP 局域网灯泡",
+  "device.wiz.url": "IP 地址:",
+  "device.wiz.url.hint": "WiZ 灯泡的局域网 IP。UDP 端口 38899 为协议默认值。",
+  "device.wiz.url.placeholder": "192.168.1.50",
+  "device.wiz_min_interval": "最小更新间隔:",
+  "device.wiz_min_interval.hint": "客户端命令速率限制（毫秒）。UDP 即发即忘可处理快速更新；默认 50 毫秒 ≈ 20 Hz。",
   "device.type.ble": "BLE LED 控制器",
   "device.type.ble.desc": "Bluetooth LE 灯带：SP110E、Triones、Zengge、Govee（整条灯带同色）",
   "device.ble.url": "BLE 地址:",

server/src/ledgrab/storage/device_store.py

@@ -64,6 +64,8 @@ class Device:
         hue_entertainment_group_id: str = "",
         # Yeelight fields
         yeelight_min_interval_ms: int = 500,
+        # WiZ fields
+        wiz_min_interval_ms: int = 50,
         # SPI Direct fields
         spi_speed_hz: int = 800000,
         spi_led_type: str = "WS2812B",
@@ -112,6 +114,7 @@ class Device:
         self.hue_client_key = hue_client_key
         self.hue_entertainment_group_id = hue_entertainment_group_id
         self.yeelight_min_interval_ms = yeelight_min_interval_ms
+        self.wiz_min_interval_ms = wiz_min_interval_ms
         self.spi_speed_hz = spi_speed_hz
         self.spi_led_type = spi_led_type
         self.chroma_device_type = chroma_device_type
@@ -151,6 +154,7 @@ class Device:
             OpenRGBConfig,
             SPIConfig,
             USBHIDConfig,
+            WiZConfig,
             WLEDConfig,
             WSConfig,
             YeelightConfig,
@@ -204,6 +208,11 @@ class Device:
                 **base,
                 yeelight_min_interval_ms=self.yeelight_min_interval_ms,
             )
+        if dt == "wiz":
+            return WiZConfig(
+                **base,
+                wiz_min_interval_ms=self.wiz_min_interval_ms,
+            )
         if dt == "spi":
             return SPIConfig(**base, spi_speed_hz=self.spi_speed_hz, spi_led_type=self.spi_led_type)
         if dt == "chroma":
@@ -284,6 +293,8 @@ class Device:
             d["hue_entertainment_group_id"] = self.hue_entertainment_group_id
         if self.yeelight_min_interval_ms != 500:
             d["yeelight_min_interval_ms"] = self.yeelight_min_interval_ms
+        if self.wiz_min_interval_ms != 50:
+            d["wiz_min_interval_ms"] = self.wiz_min_interval_ms
         if self.spi_speed_hz != 800000:
             d["spi_speed_hz"] = self.spi_speed_hz
         if self.spi_led_type != "WS2812B":
@@ -340,6 +351,7 @@ class Device:
             hue_client_key=_dec(data.get("hue_client_key", "")),
             hue_entertainment_group_id=data.get("hue_entertainment_group_id", ""),
             yeelight_min_interval_ms=data.get("yeelight_min_interval_ms", 500),
+            wiz_min_interval_ms=data.get("wiz_min_interval_ms", 50),
             spi_speed_hz=data.get("spi_speed_hz", 800000),
             spi_led_type=data.get("spi_led_type", "WS2812B"),
             chroma_device_type=data.get("chroma_device_type", "chromalink"),
@@ -388,6 +400,7 @@ _UPDATABLE_FIELDS: frozenset[str] = frozenset(
         "hue_client_key",
         "hue_entertainment_group_id",
         "yeelight_min_interval_ms",
+        "wiz_min_interval_ms",
         "spi_speed_hz",
         "spi_led_type",
         "chroma_device_type",
@@ -489,6 +502,7 @@ class DeviceStore(BaseSqliteStore[Device]):
         hue_client_key: str = "",
         hue_entertainment_group_id: str = "",
         yeelight_min_interval_ms: int = 500,
+        wiz_min_interval_ms: int = 50,
         spi_speed_hz: int = 800000,
         spi_led_type: str = "WS2812B",
         chroma_device_type: str = "chromalink",
@@ -533,6 +547,7 @@ class DeviceStore(BaseSqliteStore[Device]):
                 hue_client_key=hue_client_key,
                 hue_entertainment_group_id=hue_entertainment_group_id,
                 yeelight_min_interval_ms=yeelight_min_interval_ms,
+                wiz_min_interval_ms=wiz_min_interval_ms,
                 spi_speed_hz=spi_speed_hz,
                 spi_led_type=spi_led_type,
                 chroma_device_type=chroma_device_type,

server/src/ledgrab/templates/modals/add-device.html

@@ -47,6 +47,7 @@
                         <option value="espnow">ESP-NOW</option>
                         <option value="hue">Philips Hue</option>
                         <option value="yeelight">Yeelight</option>
+                        <option value="wiz">WiZ</option>
                         <option value="ble">BLE LED Controller</option>
                         <option value="usbhid">USB HID</option>
                         <option value="spi">SPI Direct</option>
@@ -225,6 +226,15 @@
                     <small class="input-hint" style="display:none" data-i18n="device.yeelight_min_interval.hint">Client-side rate limit between commands in ms. Default 500 ms keeps the bulb under its ~1 cmd/sec cap. Lower = faster updates but risk throttling.</small>
                     <input type="number" id="device-yeelight-min-interval" min="0" max="10000" step="50" value="500">
                 </div>
+                <!-- WiZ fields -->
+                <div class="form-group" id="device-wiz-min-interval-group" style="display: none;">
+                    <div class="label-row">
+                        <label for="device-wiz-min-interval" data-i18n="device.wiz_min_interval">Min Update Interval:</label>
+                        <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                    </div>
+                    <small class="input-hint" style="display:none" data-i18n="device.wiz_min_interval.hint">Client-side rate limit between commands in ms. UDP fire-and-forget tolerates fast updates; default 50 ms ≈ 20 Hz.</small>
+                    <input type="number" id="device-wiz-min-interval" min="0" max="10000" step="10" value="50">
+                </div>
                 <!-- ESP-NOW fields -->
                 <div class="form-group" id="device-espnow-peer-mac-group" style="display: none;">
                     <div class="label-row">

server/src/ledgrab/templates/modals/device-settings.html

@@ -259,6 +259,15 @@
                             <input type="number" id="settings-yeelight-min-interval" min="0" max="10000" step="50" value="500">
                         </div>
 
+                        <div class="form-group" id="settings-wiz-min-interval-group" style="display: none;">
+                            <div class="label-row">
+                                <label for="settings-wiz-min-interval" data-i18n="device.wiz_min_interval">Min Update Interval:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="device.wiz_min_interval.hint">Client-side rate limit between commands in ms. UDP fire-and-forget tolerates fast updates; default 50 ms ≈ 20 Hz.</small>
+                            <input type="number" id="settings-wiz-min-interval" min="0" max="10000" step="10" value="50">
+                        </div>
+
                         <div class="form-group" id="settings-send-latency-group" style="display: none;">
                             <div class="label-row">
                                 <label for="settings-send-latency" data-i18n="device.send_latency">Send Latency (ms):</label>

server/tests/test_wiz.py

@@ -0,0 +1,372 @@
+"""Tests for the WiZ Connected UDP LED client + provider."""
+
+from __future__ import annotations
+
+import json
+from unittest.mock import MagicMock
+
+import numpy as np
+import pytest
+
+from ledgrab.core.devices.device_config import WiZConfig
+from ledgrab.core.devices.led_client import ProviderDeps
+from ledgrab.core.devices.wiz_client import (
+    WIZ_PORT,
+    WiZClient,
+    _average_color,
+    _extract_mac,
+    parse_wiz_url,
+)
+from ledgrab.core.devices.wiz_provider import WiZDeviceProvider
+
+
+# ============================================================================
+# parse_wiz_url
+# ============================================================================
+
+
+@pytest.mark.parametrize(
+    "url,expected",
+    [
+        ("wiz://192.168.1.50", ("192.168.1.50", WIZ_PORT)),
+        ("wiz://192.168.1.50:38899", ("192.168.1.50", 38899)),
+        ("wiz://192.168.1.50:40000", ("192.168.1.50", 40000)),
+        ("192.168.1.50", ("192.168.1.50", WIZ_PORT)),
+        ("192.168.1.50:38899", ("192.168.1.50", 38899)),
+        ("bulb.local", ("bulb.local", WIZ_PORT)),
+    ],
+)
+def test_parse_wiz_url(url, expected):
+    assert parse_wiz_url(url) == expected
+
+
+@pytest.mark.parametrize("url", ["", "   ", "wiz://", "://192.168.1.1"])
+def test_parse_wiz_url_rejects_empty(url):
+    with pytest.raises(ValueError):
+        parse_wiz_url(url)
+
+
+# ============================================================================
+# Helpers
+# ============================================================================
+
+
+def test_average_color_numpy():
+    pixels = np.array([[10, 20, 30], [40, 50, 60], [70, 80, 90]], dtype=np.uint8)
+    assert _average_color(pixels) == (40, 50, 60)
+
+
+def test_average_color_list_and_empty():
+    assert _average_color([(10, 0, 0), (20, 0, 0), (30, 0, 0)]) == (20, 0, 0)
+    assert _average_color([]) == (0, 0, 0)
+
+
+def test_extract_mac_from_registration_reply():
+    assert _extract_mac({"result": {"mac": "AABBCCDDEEFF"}}) == "aabbccddeeff"
+    assert _extract_mac({"result": {}}) == ""
+    assert _extract_mac({"error": "oops"}) == ""
+    assert _extract_mac({}) == ""
+
+
+# ============================================================================
+# WiZClient (mocked transport)
+# ============================================================================
+
+
+def _make_connected_client(min_interval_s: float = 0.0) -> WiZClient:
+    client = WiZClient("wiz://127.0.0.1", led_count=10, min_interval_s=min_interval_s)
+    transport = MagicMock()
+    transport.sendto = MagicMock()
+    transport.close = MagicMock()
+    client._transport = transport
+    client._protocol = MagicMock()
+    client._connected = True
+    return client
+
+
+def _sent_payloads(client: WiZClient) -> list[dict]:
+    return [
+        json.loads(call.args[0].decode("utf-8")) for call in client._transport.sendto.call_args_list
+    ]
+
+
+@pytest.mark.asyncio
+async def test_send_pixels_averages_to_set_pilot_rgb():
+    client = _make_connected_client()
+    pixels = np.array(
+        [[255, 0, 0], [0, 255, 0], [0, 0, 255]],
+        dtype=np.uint8,
+    )
+
+    await client.send_pixels(pixels)
+
+    payloads = _sent_payloads(client)
+    assert len(payloads) == 1
+    assert payloads[0]["method"] == "setPilot"
+    # Average of (255,0,0), (0,255,0), (0,0,255) is (85, 85, 85)
+    assert payloads[0]["params"] == {"r": 85, "g": 85, "b": 85}
+
+
+@pytest.mark.asyncio
+async def test_send_pixels_scales_for_brightness():
+    client = _make_connected_client()
+    pixels = np.array([[200, 100, 50]], dtype=np.uint8)
+
+    await client.send_pixels(pixels, brightness=128)
+
+    payloads = _sent_payloads(client)
+    expected_r = int(200 * 128 / 255)
+    expected_g = int(100 * 128 / 255)
+    expected_b = int(50 * 128 / 255)
+    assert payloads[0]["params"] == {"r": expected_r, "g": expected_g, "b": expected_b}
+
+
+@pytest.mark.asyncio
+async def test_send_pixels_zero_brightness_blacks_out():
+    client = _make_connected_client()
+    pixels = np.array([[200, 100, 50]], dtype=np.uint8)
+
+    await client.send_pixels(pixels, brightness=0)
+
+    payloads = _sent_payloads(client)
+    assert payloads[0]["params"] == {"r": 0, "g": 0, "b": 0}
+
+
+@pytest.mark.asyncio
+async def test_rate_limit_drops_subsequent_frames_within_window():
+    client = _make_connected_client(min_interval_s=10.0)
+    pixels = np.array([[10, 20, 30]], dtype=np.uint8)
+
+    await client.send_pixels(pixels)
+    await client.send_pixels(pixels)
+    await client.send_pixels(pixels)
+
+    assert len(_sent_payloads(client)) == 1
+
+
+@pytest.mark.asyncio
+async def test_zero_interval_sends_every_frame():
+    client = _make_connected_client(min_interval_s=0.0)
+    pixels = np.array([[10, 20, 30]], dtype=np.uint8)
+
+    await client.send_pixels(pixels)
+    await client.send_pixels(pixels)
+    await client.send_pixels(pixels)
+
+    assert len(_sent_payloads(client)) == 3
+
+
+@pytest.mark.asyncio
+async def test_send_pixels_when_not_connected_raises():
+    client = WiZClient("wiz://127.0.0.1", led_count=1)
+    with pytest.raises(RuntimeError, match="not connected"):
+        await client.send_pixels(np.array([[1, 2, 3]], dtype=np.uint8))
+
+
+def test_send_pixels_fast_runs_synchronously():
+    """Hot path: synchronous fast-send must dispatch over the UDP transport."""
+    client = _make_connected_client(min_interval_s=0.0)
+    pixels = np.array([[10, 20, 30]], dtype=np.uint8)
+
+    client.send_pixels_fast(pixels)
+
+    payloads = _sent_payloads(client)
+    assert payloads[0]["params"] == {"r": 10, "g": 20, "b": 30}
+
+
+def test_send_pixels_fast_when_not_connected_raises():
+    client = WiZClient("wiz://127.0.0.1", led_count=1)
+    with pytest.raises(RuntimeError, match="not connected"):
+        client.send_pixels_fast([(1, 2, 3)])
+
+
+def test_supports_fast_send_is_true():
+    assert WiZClient("wiz://127.0.0.1", led_count=1).supports_fast_send is True
+
+
+@pytest.mark.asyncio
+async def test_set_power_sends_state_param():
+    client = _make_connected_client()
+    await client.set_power(True)
+    await client.set_power(False)
+    payloads = _sent_payloads(client)
+    assert payloads[0]["params"] == {"state": True}
+    assert payloads[1]["params"] == {"state": False}
+
+
+@pytest.mark.asyncio
+async def test_set_brightness_clamps_to_10_100():
+    """WiZ rejects dimming values below ~10."""
+    client = _make_connected_client()
+    await client.set_brightness(5)
+    await client.set_brightness(50)
+    await client.set_brightness(200)
+    payloads = _sent_payloads(client)
+    assert payloads[0]["params"] == {"dimming": 10}
+    assert payloads[1]["params"] == {"dimming": 50}
+    assert payloads[2]["params"] == {"dimming": 100}
+
+
+@pytest.mark.asyncio
+async def test_set_color_sends_rgb_set_pilot():
+    client = _make_connected_client()
+    await client.set_color(12, 34, 56)
+    payloads = _sent_payloads(client)
+    assert payloads[0] == {"method": "setPilot", "params": {"r": 12, "g": 34, "b": 56}}
+
+
+@pytest.mark.asyncio
+async def test_close_releases_transport():
+    client = _make_connected_client()
+    transport = client._transport
+    await client.close()
+    transport.close.assert_called_once()
+    assert client._transport is None
+    assert client.is_connected is False
+
+
+# ============================================================================
+# Provider
+# ============================================================================
+
+
+def test_provider_device_type_and_capabilities():
+    provider = WiZDeviceProvider()
+    assert provider.device_type == "wiz"
+    caps = provider.capabilities
+    assert "manual_led_count" in caps
+    assert "power_control" in caps
+    assert "brightness_control" in caps
+    assert "single_pixel" in caps
+
+
+@pytest.mark.asyncio
+async def test_provider_validate_accepts_bare_host():
+    provider = WiZDeviceProvider()
+    assert await provider.validate_device("192.168.1.50") == {}
+
+
+@pytest.mark.asyncio
+async def test_provider_validate_rejects_empty():
+    provider = WiZDeviceProvider()
+    with pytest.raises(ValueError, match="Invalid WiZ URL"):
+        await provider.validate_device("")
+
+
+def test_provider_create_client_threads_config():
+    provider = WiZDeviceProvider()
+    config = WiZConfig(
+        device_id="device_test",
+        device_url="wiz://192.168.1.50",
+        led_count=30,
+        wiz_min_interval_ms=100,
+    )
+
+    client = provider.create_client(config, deps=ProviderDeps())
+
+    assert isinstance(client, WiZClient)
+    assert client.host == "192.168.1.50"
+    assert client.port == WIZ_PORT
+    assert client._led_count == 30
+    assert client._min_interval_s == pytest.approx(0.1)
+
+
+@pytest.mark.asyncio
+async def test_provider_discover_returns_empty_on_failure(monkeypatch):
+    async def _explode(timeout):
+        raise OSError("network unreachable")
+
+    monkeypatch.setattr("ledgrab.core.devices.wiz_provider.discover_wiz_bulbs", _explode)
+    provider = WiZDeviceProvider()
+    assert await provider.discover() == []
+
+
+@pytest.mark.asyncio
+async def test_provider_discover_maps_replies_to_discovered_devices(monkeypatch):
+    async def _fake(timeout):
+        return [
+            {"ip": "192.168.1.50", "mac": "aabbccddeeff", "raw": {}},
+            # Missing IP should be skipped silently.
+            {"ip": "", "mac": "1234567890ab", "raw": {}},
+        ]
+
+    monkeypatch.setattr("ledgrab.core.devices.wiz_provider.discover_wiz_bulbs", _fake)
+    provider = WiZDeviceProvider()
+    results = await provider.discover()
+
+    assert len(results) == 1
+    [bulb] = results
+    assert bulb.device_type == "wiz"
+    assert bulb.url == "wiz://192.168.1.50"
+    assert bulb.ip == "192.168.1.50"
+    assert bulb.mac == "aabbccddeeff"
+    # Last 6 chars of the MAC end up in the surface name for easy ID
+    assert "ddeeff" in bulb.name.lower()
+
+
+# ============================================================================
+# Device.to_config() round-trip
+# ============================================================================
+
+
+def test_device_to_config_round_trip_wiz():
+    from ledgrab.storage.device_store import Device
+
+    device = Device(
+        device_id="device_abc12345",
+        name="Bedroom WiZ",
+        url="wiz://192.168.1.42",
+        led_count=30,
+        device_type="wiz",
+        wiz_min_interval_ms=100,
+    )
+
+    config = device.to_config()
+
+    assert isinstance(config, WiZConfig)
+    assert config.device_url == "wiz://192.168.1.42"
+    assert config.led_count == 30
+    assert config.wiz_min_interval_ms == 100
+
+
+def test_device_to_dict_omits_wiz_default_interval():
+    from ledgrab.storage.device_store import Device
+
+    device = Device(
+        device_id="device_abc12345",
+        name="Default",
+        url="wiz://192.168.1.42",
+        led_count=1,
+        device_type="wiz",
+    )
+    assert "wiz_min_interval_ms" not in device.to_dict()
+
+
+def test_device_to_dict_preserves_non_default_wiz_interval():
+    from ledgrab.storage.device_store import Device
+
+    device = Device(
+        device_id="device_abc12345",
+        name="Custom",
+        url="wiz://192.168.1.42",
+        led_count=1,
+        device_type="wiz",
+        wiz_min_interval_ms=200,
+    )
+    assert device.to_dict()["wiz_min_interval_ms"] == 200
+
+
+def test_device_from_dict_wiz_round_trip():
+    from ledgrab.storage.device_store import Device
+
+    restored = Device.from_dict(
+        {
+            "id": "device_abc12345",
+            "name": "Roundtrip",
+            "url": "wiz://10.0.0.1",
+            "led_count": 1,
+            "device_type": "wiz",
+            "wiz_min_interval_ms": 150,
+        }
+    )
+    assert restored.wiz_min_interval_ms == 150