feat: add Game asset bundle studio

[atomantic]

Summary

• Add /game and /game/:id under Create for managed-app-bound Game workspaces.
• Bind reusable Sprite records and Music tracks, then compile immutable versioned manifests with deterministic ordering and SHA-256 integrity checks.
• Persist user-triggered AI feedback history with explicit provider, model, and supported effort selection.
• Store Game records in PostgreSQL for normal installs, with the collectionStore test/development escape hatch documented in the storage contract.

Closes #3177

Test plan

• NODE_ENV=test npm test -- --run routes/games.test.js services/games/compile.test.js services/games/feedback.test.js lib/navManifest.test.js lib/validation.schemas.test.js lib/db/schema/index.test.js
• npm test -- --run src/services/apiGames.test.js src/components/games/GameFeedback.test.jsx
• ESLint on all changed client modules
• npm run build
• Full client suite reached one unrelated GitTab Escape-key timing failure after 1,309 passing tests; GitTab.test.jsx passed immediately in isolation.