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/test_screen_capture.py

@@ -6,7 +6,7 @@ import sys
 import numpy as np
 import pytest
 
-from wled_controller.core.capture.screen_capture import (
+from ledgrab.core.capture.screen_capture import (
     get_available_displays,
     capture_display,
     extract_border_pixels,
@@ -18,7 +18,9 @@ from wled_controller.core.capture.screen_capture import (
 )
 
 # Skip tests that require a real display on headless CI
-_has_display = bool(os.environ.get("DISPLAY") or sys.platform == "win32" or sys.platform == "darwin")
+_has_display = bool(
+    os.environ.get("DISPLAY") or sys.platform == "win32" or sys.platform == "darwin"
+)
 requires_display = pytest.mark.skipif(not _has_display, reason="No display available (headless CI)")
 
 
@@ -66,12 +68,7 @@ def test_extract_border_pixels():
     """Test extracting border pixels."""
     # Create a test screen capture
     test_image = np.random.randint(0, 256, (100, 200, 3), dtype=np.uint8)
-    capture = ScreenCapture(
-        image=test_image,
-        width=200,
-        height=100,
-        display_index=0
-    )
+    capture = ScreenCapture(image=test_image, width=200, height=100, display_index=0)
 
     border_width = 10
     borders = extract_border_pixels(capture, border_width)
@@ -86,12 +83,7 @@ def test_extract_border_pixels():
 def test_extract_border_pixels_invalid_width():
     """Test extracting borders with invalid width."""
     test_image = np.random.randint(0, 256, (100, 200, 3), dtype=np.uint8)
-    capture = ScreenCapture(
-        image=test_image,
-        width=200,
-        height=100,
-        display_index=0
-    )
+    capture = ScreenCapture(image=test_image, width=200, height=100, display_index=0)
 
     # Border width too small
     with pytest.raises(ValueError):