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/tests/core/test_automation_engine.py

@@ -5,8 +5,8 @@ from unittest.mock import MagicMock, patch
 
 import pytest
 
-from wled_controller.core.automations.automation_engine import AutomationEngine
-from wled_controller.storage.automation import (
+from ledgrab.core.automations.automation_engine import AutomationEngine
+from ledgrab.storage.automation import (
     ApplicationRule,
     Automation,
     DisplayStateRule,
@@ -15,7 +15,7 @@ from wled_controller.storage.automation import (
     TimeOfDayRule,
     WebhookRule,
 )
-from wled_controller.storage.automation_store import AutomationStore
+from ledgrab.storage.automation_store import AutomationStore
 
 
 # ---------------------------------------------------------------------------
@@ -43,7 +43,7 @@ def engine(mock_store, mock_manager) -> AutomationEngine:
     causes access violations in the test environment, so we replace it
     with a simple MagicMock.
     """
-    with patch("wled_controller.core.automations.automation_engine.PlatformDetector"):
+    with patch("ledgrab.core.automations.automation_engine.PlatformDetector"):
         eng = AutomationEngine(
             automation_store=mock_store,
             processor_manager=mock_manager,