Promotes the existing DDP packet layer (previously WLED-internal) to a
first-class device type so any DDP-speaking receiver (Pixelblaze,
ESPixelStick, xLights/Falcon endpoints, generic firmware) can be driven
directly without WLED in the path.
Backend:
- New DDPLEDClient wraps the DDPClient transport as a proper LEDClient
with supports_fast_send=True (synchronous UDP push on the hot loop).
- New DDPDeviceProvider — no native discovery, manual LED count,
capabilities = {manual_led_count, health_check}.
- DDPConfig joins the typed config union; Device storage gains
ddp_port / ddp_destination_id / ddp_color_order fields with safe
defaults (0/1/1 -> port 4048, destination 1=display, RGB byte order).
- URL scheme: ddp://host[:port] or bare host[:port] (default 4048).
- Health check resolves the host via async DNS; UDP has no reply
channel so reachability is best-effort by design.
- 29 new tests in test_ddp_led_client.py cover URL parsing, packet
hot path (brightness, list/numpy input shapes, fast vs async send),
provider validate/discover/capabilities, config round-trip via
Device.to_config() and to_dict/from_dict.
Frontend:
- 'ddp' in DEVICE_TYPE_KEYS (next to 'dmx'), paper-plane icon.
- isDdpDevice predicate + per-type field show/hide in the create &
settings modals.
- Color-order picker uses IconSelect (project rule bans plain select).
- Locale strings added in en/ru/zh.
Note: this commit also carries two pre-existing in-flight hunks that
were intermixed in the same files and could not be split out
non-interactively:
- api/routes/devices.py: URL-scheme inference for bare WLED hosts,
safer error messages, exception-isolated parallel discovery.
- storage/device_store.py: secret_box helpers + at-rest encryption of
Hue / BLE-Govee / MQTT credentials.
Both are independent of DDP and intentional per the user.
