refactor: rename project to LedGrab, split HA integration into separate repo

- Rename Python package: wled_controller -> ledgrab
- Rename env var prefix: WLED_ -> LEDGRAB_ (with auto-migration for old vars)
- Rename localStorage key: wled_api_key -> ledgrab_api_key (with migration)
- Rename HA integration domain: wled_screen_controller -> ledgrab
- Update all imports, build scripts, Docker, installer, config, docs
- Remove HA integration (moved to ledgrab-haos-integration repo)
- Remove hacs.json (belongs in HA repo now)
- Add startup warning for users with old WLED_ env vars
- All tests pass (715/715), ruff clean, tsc clean, frontend builds

server/CLAUDE.md

@@ -1,15 +1,15 @@
-# Claude Instructions for WLED Screen Controller Server
+# Claude Instructions for LedGrab Server
 
 ## Project Structure
 
-- `src/wled_controller/main.py` — FastAPI application entry point
-- `src/wled_controller/api/routes/` — REST API endpoints (one file per entity)
-- `src/wled_controller/api/schemas/` — Pydantic request/response models (one file per entity)
-- `src/wled_controller/core/` — Core business logic (capture, devices, audio, processing, automations)
-- `src/wled_controller/storage/` — Data models (dataclasses) and JSON persistence stores
-- `src/wled_controller/utils/` — Utility functions (logging, monitor detection, SSRF validation, sound playback)
-- `src/wled_controller/static/` — Frontend files (TypeScript, CSS, locales)
-- `src/wled_controller/templates/` — Jinja2 HTML templates
+- `src/ledgrab/main.py` — FastAPI application entry point
+- `src/ledgrab/api/routes/` — REST API endpoints (one file per entity)
+- `src/ledgrab/api/schemas/` — Pydantic request/response models (one file per entity)
+- `src/ledgrab/core/` — Core business logic (capture, devices, audio, processing, automations)
+- `src/ledgrab/storage/` — Data models (dataclasses) and JSON persistence stores
+- `src/ledgrab/utils/` — Utility functions (logging, monitor detection, SSRF validation, sound playback)
+- `src/ledgrab/static/` — Frontend files (TypeScript, CSS, locales)
+- `src/ledgrab/templates/` — Jinja2 HTML templates
 - `config/` — Configuration files (YAML)
 - `data/` — Runtime data (JSON stores, persisted state)
 
@@ -22,7 +22,7 @@ Each entity follows: dataclass model (`storage/`) + JSON store (`storage/*_store
 Server uses API key authentication via Bearer token in `Authorization` header.
 
 - Config: `config/default_config.yaml` under `auth.api_keys`
-- Env var: `WLED_AUTH__API_KEYS`
+- Env var: `LEDGRAB_AUTH__API_KEYS`
 - When `api_keys` is empty (default), auth is disabled — all endpoints are open
 - To enable auth, add key entries (e.g. `dev: "your-secret-key"`)