TODO history tracking

• Passes: yes
• Open items: 20
• Completed items: 135
• Legacy/guessed timestamped entries: 78
• Tracking started: 2026-03-12T13:22:26Z
• Last synced: 2026-09-13T23:18:21Z
• Projected finish (provisional): 2026-10-25T04:10:46Z