Trust ledger

Track what's owed against what's actually been deposited. This never touches your money — Preclearance doesn't hold, move, or route funds; you enter deposits you made yourself, wherever the trust account actually lives.

This is a calculator, not a record yet — nothing here is saved. Once your ledger has persisted checks and deposits, this screen becomes per-child and per-video, matching BUILD-SPEC.md section 6, screen 5.