Problem #1222

Problem

.hypatia-baseline.json carries tracked-debt entries with expires_at values.
Sampled entries expire around 2026-10-21 — roughly two weeks from
2026-10-09.

Not counted: how many entries expire on or near that date, and what happens
when they do. If expiry silently drops them, or silently turns them into hard
failures, that is a behaviour change arriving on a schedule nobody owns.

Acceptance

• Count the entries expiring on or before 2026-10-31 and list them.
• Document what expiry does (drop / renew / escalate) and where that is
  implemented.
• Either renew them with a recorded reason, or let them expire with the
  consequence stated in advance.

Note

The file itself is healthy: 189 entries, valid JSON, and the 31 file keys
that pointed into the rhodium tree were repathed during the 9-archive move
(#1218) with none lost.