Adds CalendarTool implementing the Tool ABC so the ReAct engine can
create, query, update, and delete events autonomously. Resolves
event_type_name and tag_names (look up or create), sets
source="agent" to distinguish agent-created events from manual ones.
- src/agentkit/tools/calendar_tool.py — CalendarTool(Tool)
- tests/unit/tools/test_calendar_tool.py — 13 tests covering all actions
1. InMemoryMessageBus.request(): fix param name (timeout→timeout_seconds) to match ABC
2. InMemoryMessageBus: track consumer tasks, cancel on unsubscribe
3. InMemoryMessageBus: _try_resolve_pending() in queue consumer path
4. evolve_soul(): use "default" category when patterns is empty
5. quick_classify(): use delimiter-based prompt to mitigate injection risk
6. Use asyncio.get_running_loop() instead of deprecated get_event_loop()
chiguyong