Periodic check-in

What it records

• note extent — carries a duration

  something the user typed into a Diurna check-in prompt — ground truth, their own words about what they were doing; data.text.

What it can touch

The declared manifest — the sheet shown before install. Asking for more later means re-consent.

• Touches nothing no filesystem, network, or account access

  enforced — a sandbox wall, whatever the code tries