M8 phase 1.3. Plants the Hilt entrypoint so the rest of the modules (NetworkModule, DatabaseModule, PlayerModule) can land in subsequent phases. WorkerFactory wired so HiltWorker can be used directly later. Restores @AndroidEntryPoint on MainActivity (deferred from 1.2 since Hilt KSP errors without an annotated Application class). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>