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.ps1

@@ -1,8 +1,8 @@
-# Restart the WLED Screen Controller server
+# Restart the LedGrab server
 # Uses graceful shutdown first (lets the server persist data to disk),
 # then force-kills as a fallback.
 
-$serverRoot = 'c:\Users\Alexei\Documents\wled-screen-controller\server'
+$serverRoot = $PSScriptRoot
 
 # Read API key from config for authenticated shutdown request
 $configPath = Join-Path $serverRoot 'config\default_config.yaml'
@@ -20,7 +20,7 @@ if (Test-Path $configPath) {
 
 # Find running server processes
 $procs = Get-CimInstance Win32_Process -Filter "Name='python.exe'" |
-    Where-Object { $_.CommandLine -like '*wled_controller*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
+    Where-Object { $_.CommandLine -like '*ledgrab*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
 
 if ($procs) {
     # Step 1: Request graceful shutdown via API (triggers lifespan shutdown + store save)
@@ -46,7 +46,7 @@ if ($procs) {
             Start-Sleep -Seconds 1
             $waited++
             $still = Get-CimInstance Win32_Process -Filter "Name='python.exe'" |
-                Where-Object { $_.CommandLine -like '*wled_controller*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
+                Where-Object { $_.CommandLine -like '*ledgrab*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
             if (-not $still) {
                 Write-Host "  Server exited cleanly after ${waited}s"
                 break
@@ -54,7 +54,7 @@ if ($procs) {
         }
         # Step 3: Force-kill stragglers
         $still = Get-CimInstance Win32_Process -Filter "Name='python.exe'" |
-            Where-Object { $_.CommandLine -like '*wled_controller*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
+            Where-Object { $_.CommandLine -like '*ledgrab*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
         if ($still) {
             Write-Host "  Force-killing remaining processes..."
             foreach ($p in $still) {
@@ -85,13 +85,13 @@ if ($regUser) {
 
 # Start server detached (set WLED_RESTART=1 to skip browser open)
 Write-Host "Starting server..."
-$env:WLED_RESTART = "1"
+$env:LEDGRAB_RESTART = "1"
 $pythonExe = (Get-Command python -ErrorAction SilentlyContinue).Source
 if (-not $pythonExe) {
     # Fallback to known install location
     $pythonExe = "$env:LOCALAPPDATA\Programs\Python\Python313\python.exe"
 }
-Start-Process -FilePath $pythonExe -ArgumentList '-m', 'wled_controller' `
+Start-Process -FilePath $pythonExe -ArgumentList '-m', 'ledgrab' `
     -WorkingDirectory $serverRoot `
     -WindowStyle Hidden
 
@@ -99,7 +99,7 @@ Start-Sleep -Seconds 3
 
 # Verify it's running
 $check = Get-CimInstance Win32_Process -Filter "Name='python.exe'" |
-    Where-Object { $_.CommandLine -like '*wled_controller*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
+    Where-Object { $_.CommandLine -like '*ledgrab*' -and $_.CommandLine -notlike '*demo*' -and $_.CommandLine -notlike '*vscode*' -and $_.CommandLine -notlike '*isort*' }
 if ($check) {
     Write-Host "Server started (PID $($check[0].ProcessId))"
 } else {