Production deploy setup + finish AppForge rebrand

- Backend now serves the built frontend (dist) + SPA fallback for single-service deploy
- Schema applied idempotently on boot (ensureSchema) + working db:push script
- Add Dockerfile + .dockerignore + start script
- Footer credit removed; default app name -> AppForge; docs/package.json de-attributed

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,12 @@
+node_modules
+dist
+.git
+.env
+.env.local
+.env.*.local
+server/storage
+*.log
+.vscode
+.idea
+android
+ios