- owlbot.testing.plugin: fixtures that mirror ModuleLoader's wiring (module_context, module_lifecycle, command/event/route dispatchers, in-memory storage, real Config on a tmp YAML, HttpClient with aioresponses interception, and an aiohttp route_client).
- owlbot.testing.helpers: make_user, make_chat_event, and factories for every Owncast event type, with sensible defaults.
- owlbot.testing.stubs: RecordingOwncastClient and RecordingOwncastAdminClient that log each call to a .calls list in place of hitting the API.
- pyproject.toml: added a 'testing' extra for downstream module authors (pytest, pytest-asyncio, pytest-aiohttp, aioresponses).
- tests: migrated in-tree tests to the new helpers, moved module tests under tests/builtin_modules/, and swapped freezegun for time-machine.
