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/restart.sh

@@ -1,25 +1,25 @@
 #!/usr/bin/env bash
-# Restart the WLED Screen Controller server (Linux/macOS)
+# Restart the LedGrab server (Linux/macOS)
 set -e
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 
 # Stop any running instance
-PIDS=$(pgrep -f 'wled_controller\.main' 2>/dev/null || true)
+PIDS=$(pgrep -f 'ledgrab\.main' 2>/dev/null || true)
 if [ -n "$PIDS" ]; then
     echo "Stopping server (PID $PIDS)..."
-    pkill -f 'wled_controller\.main' 2>/dev/null || true
+    pkill -f 'ledgrab\.main' 2>/dev/null || true
     sleep 2
 fi
 
 # Start server detached
 echo "Starting server..."
 cd "$SCRIPT_DIR"
-nohup python -m wled_controller.main > /dev/null 2>&1 &
+nohup python -m ledgrab.main > /dev/null 2>&1 &
 sleep 3
 
 # Verify it's running
-NEW_PID=$(pgrep -f 'wled_controller\.main' 2>/dev/null || true)
+NEW_PID=$(pgrep -f 'ledgrab\.main' 2>/dev/null || true)
 if [ -n "$NEW_PID" ]; then
     echo "Server started (PID $NEW_PID)"
 else