chore: checkpoint ai search comments and i18n foundation

dev.ps1

@@ -1,6 +1,8 @@
 param(
   [switch]$FrontendOnly,
   [switch]$BackendOnly,
+  [switch]$McpOnly,
+  [switch]$WithMcp,
   [string]$DatabaseUrl = "postgres://postgres:postgres%402025%21@10.0.0.2:5432/termi-api_development"
 )
 
@@ -9,9 +11,10 @@ $ErrorActionPreference = "Stop"
 $repoRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
 $frontendScript = Join-Path $repoRoot "start-frontend.ps1"
 $backendScript = Join-Path $repoRoot "start-backend.ps1"
+$mcpScript = Join-Path $repoRoot "start-mcp.ps1"
 
-if ($FrontendOnly -and $BackendOnly) {
-  throw "Use either -FrontendOnly or -BackendOnly, not both."
+if (@($FrontendOnly, $BackendOnly, $McpOnly).Where({ $_ }).Count -gt 1) {
+  throw "Use only one of -FrontendOnly, -BackendOnly, or -McpOnly."
 }
 
 if ($FrontendOnly) {
@@ -24,7 +27,13 @@ if ($BackendOnly) {
   exit $LASTEXITCODE
 }
 
-Write-Host "[monorepo] Starting frontend and backend in separate PowerShell windows..." -ForegroundColor Cyan
+if ($McpOnly) {
+  & $mcpScript
+  exit $LASTEXITCODE
+}
+
+$services = if ($WithMcp) { "frontend, backend, and MCP" } else { "frontend and backend" }
+Write-Host "[monorepo] Starting $services in separate PowerShell windows..." -ForegroundColor Cyan
 
 Start-Process powershell -ArgumentList @(
   "-NoExit",
@@ -39,4 +48,13 @@ Start-Process powershell -ArgumentList @(
   "-DatabaseUrl", $DatabaseUrl
 )
 
-Write-Host "[monorepo] Frontend window and backend window started." -ForegroundColor Green
+if ($WithMcp) {
+  Start-Process powershell -ArgumentList @(
+    "-NoExit",
+    "-ExecutionPolicy", "Bypass",
+    "-File", $mcpScript
+  )
+}
+
+$servicesStarted = if ($WithMcp) { "Frontend, backend, and MCP windows started." } else { "Frontend window and backend window started." }
+Write-Host "[monorepo] $servicesStarted" -ForegroundColor Green