fix: improve llmwiki search integration

scripts/start-frontend.ps1

@@ -0,0 +1,41 @@
+. "$PSScriptRoot\env.ps1"
+
+$PidFile = Join-Path $PidDir "frontend.pid"
+$LogFile = Join-Path $LogDir "frontend.log"
+
+if (Test-PidRunning $PidFile) {
+    $existingPid = Get-Content -LiteralPath $PidFile | Select-Object -First 1
+    Write-Host "Frontend is already running (pid $existingPid)."
+    Write-Host "URL: $FrontendPublicBaseUrl"
+    exit 0
+}
+
+$NpmCmd = (Get-Command npm.cmd -ErrorAction SilentlyContinue).Source
+if (-not $NpmCmd) {
+    throw "npm.cmd was not found in PATH. Install Node.js or add npm.cmd to PATH."
+}
+
+Remove-Item -LiteralPath $PidFile -Force -ErrorAction SilentlyContinue
+
+Write-Host "Starting frontend..."
+Write-Host "Log: $LogFile"
+
+$RunnerFile = Join-Path $RuntimeDir "run-frontend.ps1"
+$runner = @"
+`$ErrorActionPreference = "Continue"
+Set-Location -LiteralPath $(ConvertTo-PSLiteral $FrontendDir)
+`$env:VITE_BACKEND_BASE_URL = $(ConvertTo-PSLiteral $BackendPublicBaseUrl)
+`$env:VITE_LANGGRAPH_BASE_URL = $(ConvertTo-PSLiteral "$BackendPublicBaseUrl/api")
+& $(ConvertTo-PSLiteral $NpmCmd) run dev -- --host $(ConvertTo-PSLiteral $FrontendHost) --port $(ConvertTo-PSLiteral $FrontendPort) *> $(ConvertTo-PSLiteral $LogFile)
+"@
+Set-Content -LiteralPath $RunnerFile -Value $runner -Encoding UTF8
+
+$proc = Start-Process -FilePath "powershell.exe" -ArgumentList @(
+    "-NoProfile",
+    "-ExecutionPolicy", "Bypass",
+    "-File", $RunnerFile
+) -WindowStyle Hidden -PassThru
+
+Set-Content -LiteralPath $PidFile -Value $proc.Id
+Write-Host "Frontend started (pid $($proc.Id))."
+Write-Host "URL: $FrontendPublicBaseUrl"