fix(platform): apply production hardening from audit plan

Close billing, tenancy, migration, build, and CI/CD gaps identified in the
audit: wallet/gateway guards, full-UUID namespaces, idempotent migrations with
base schema, stateful service stability, safer Dockerfiles/git builds, and
platform chart hardening (Redis auth, RollingUpdate, backups, Swagger off).

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

frontend/src/app/[lang]/dashboard/apps/[id]/page.tsx

@@ -1566,7 +1566,7 @@ export default function AppDetailPage() {
                       <GitBranch className="w-3 h-3" /> {app.gitBranch}
                     </span>
                   )}
-                  {app.gitToken && (
+                  {(app.hasGitToken ?? app.gitToken) && (
                     <span className="text-xs text-green-600 flex items-center gap-1">
                       <KeyRound className="w-3 h-3" />{ad.private}</span>
                   )}