Bill detail drawer

Sections, top to bottom

1. Header — name, vendor, status badge, lifetime paid total, punctuality score.
2. 12-month trend chart — bars per month with the active month highlighted.
3. Payment history — every payment with amount, date, method, notes.
4. Notes — free-text field. Use for "auto-debits on the 5th" or other reminders.
5. Attachments — drag-and-drop receipts (image or PDF). Stored encrypted.
6. Action bar — Edit, Log payment, Archive.

Why the drawer (and not a page)

Editing a bill never makes you lose your place on Bills/Calendar/Dashboard. The drawer slides over, you make your change, you close. It's a deliberate choice — most bill edits are quick.