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/kill-ports.ps1

@@ -0,0 +1,11 @@
+$ports = @(4000, 3000, 3001)
+$killed = @()
+Get-NetTCPConnection -State Listen -ErrorAction SilentlyContinue |
+  Where-Object { $ports -contains $_.LocalPort } |
+  ForEach-Object {
+    $pid = $_.OwningProcess
+    if ($killed -notcontains $pid) {
+      Stop-Process -Id $pid -Force -ErrorAction SilentlyContinue
+      $killed += $pid
+    }
+  }