docs: Update documentation for auto-update system and integration tests

README.md

@@ -144,21 +144,19 @@ Key settings:
 
 ## Testing
 
-```bash
-# Run all tests
-pytest
+- Unit tests: `pytest tests/unit/ -v`
+- Integration tests: `pytest tests/integration/ -v`
+- Coverage: `pytest --cov=src/webdrop_bridge`
 
-# Run specific test type
-pytest tests/unit/          # Unit tests only
-pytest tests/integration/   # Integration tests only
+Integration tests for the update workflow are in [tests/integration/test_update_flow.py](tests/integration/test_update_flow.py).
 
-# With coverage report
-pytest --cov=src/webdrop_bridge --cov-report=html
+## Auto-Update System
 
-# Run on specific platform marker
-pytest -m windows           # Windows-specific tests
-pytest -m macos            # macOS-specific tests
-```
+WebDrop Bridge supports automatic updates via the Forgejo Releases API. See [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) for technical details.
+
+## Changelog
+
+See [CHANGELOG.md](CHANGELOG.md) for release notes.
 
 ## Building Installers