[QA VERIFICATION PASSED] All tests passing (340/340). Endpoint implemented correctly with proper authentication, schema validation, and integration tests. MVP requirement met: only desktop image available. Ready for deployment. See /tmp/qa-CDEV-17.md for full report.

Implemented GET /api/images endpoint. **Changes made:** - Added ImageResponse and ImageListResponse schemas to app/api/schemas.py:193-206 - Created new app/api/images.py router with endpoint that returns 3 image types: - desktop (available=true): Full desktop with VNC, SSH, Claude Code - cuda (available=false): Desktop with GPU support (not in MVP) - headless (available=false): Minimal SSH-only (not in MVP) - Registered the router in app/api/__init__.py and app/main.py **Tests:** - Added comprehensive tests in tests/test_images_api.py (10 tests) - All 340 tests pass (18 skipped are integration tests requiring Incus) **Verification:** - Endpoint requires authentication (returns 401 without Bearer token) - Returns correct structure: {images: [...], total: 3} - Only desktop image has available=true per MVP requirement