docs: update project status and document implementation details
- Update STATUS.md to reflect completed placeholder bot
- Add implementation_notes.md with critical details to remember
- Update CLAUDE.md with current project structure and state
- Document key insights: notification timestamp approach, response system design
- Record technical gotchas and next steps for memory implementation
Ready for next development phase.
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>