Heartbeat system overhaul:
- Fix email/calendar checks to parse JSON output correctly
- Add per-check cooldowns and quiet hours config
- Send findings to Discord channel instead of just logging
- Auto-reindex KB when stale files detected
- Claude CLI called only if HEARTBEAT.md has extra instructions
- All settings configurable via config.json heartbeat section
Move hardcoded values to config.json:
- allowed_tools list (claude_session.py)
- Ollama URL/model (memory_search.py now reads ollama.url from config)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
