feat: team org panel, admin CRUD, local deploy tools, bidirectional data sync

Add TeamMember model and APIs, team status UI, /admin page, local server bats,
and scripts to sync data between local PostgreSQL and Render.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/wait-db.ps1

@@ -0,0 +1,9 @@
+$ok = $false
+1..30 | ForEach-Object {
+  if (Test-NetConnection -ComputerName localhost -Port 5432 -WarningAction SilentlyContinue -ErrorAction SilentlyContinue | Where-Object { $_.TcpTestSucceeded }) {
+    $ok = $true
+    break
+  }
+  Start-Sleep -Seconds 1
+}
+if (-not $ok) { exit 1 }