Add timmyctl as Timmy's primary control surface for automations:
- timmyctl daily-run: Run the Daily Run orchestration (agenda + summary)
- timmyctl log-run: Capture a quick Daily Run logbook entry
- timmyctl inbox: Show what's "calling Timmy" (PRs, Daily Run items, alerts)
- timmyctl config: Display key config (labels, logbook issue ID, token rules)
Features:
- Reads configuration from timmy_automations/config/
- File-driven configuration (no code changes for common tweaks)
- Rich output with tables and colors
- Easy to extend with new subcommands
Refs #702
