prompt: arxiv-digest-announcement-window (#79) backfill done — both papers delivered

Author: Jammy2211

active.md

@@ -5,12 +5,13 @@
 - issue: https://github.com/PyAutoLabs/PyAutoMind/issues/79
 - status: shipped, PR OPEN awaiting human merge — https://github.com/PyAutoLabs/PyAutoMind/pull/80. Human signed off on ship in-session 2026-07-15 ("go"); band-vs-seen-ID design accepted.
 - commit: 409f746 on feature/arxiv-digest-announcement-window (pushed + PR'd)
-- OPEN QUESTION: backfill still needs an explicit option choice — posts a real catch-up digest to #papers and would duplicate anything already sent this week. Options (a) fire lookback_hours=168 and accept duplicates, (b) narrower window over the known gap only, (c) skip. NOT fired.
+- backfill: DONE 2026-07-15 — human chose the narrow window. Run 29398900801 from main, lookback_hours=40, Slack POST ok. Both 2607.12129 + 2607.12209 delivered to #papers, MOA microlensing false-positive correctly dropped by Claude, ZERO duplicates (168h sweep not needed).
 - worktree: ~/Code/PyAutoLabs-wt/arxiv-digest-announcement-window (PyAutoMind on feature/arxiv-digest-announcement-window)
 - autonomy: supervised (bug cap; prompt header said safe, min() → supervised)
 - finding: #papers digest drops papers permanently. `arxiv_fetch.py` filters on `<published>` (v1 submission) within a rolling 24h/72h window, but the arXiv API only indexes papers at *announcement*, 1–3 days later. Confirmed: a 72h re-run returns both papers missed on 2026-07-15 (2607.12129, 2607.12209), so the keyword query is fine. Fix = anchor the window to arXiv's announcement bands (20:00 ET Sun–Thu; 14:00 ET Mon–Fri deadlines), computed via zoneinfo for DST.
 - note: worktree used deliberately so PyAutoMind's main checkout stays on main — `prompt_sync_push` does `git add -A` on the current branch, so registry ops must not run from the feature branch.
-- backfill: after merge, one `workflow_dispatch` with lookback_hours=168 to recover already-dropped papers.
+- gap analysis: only real gap was Mon 18:00 → Tue 02:00 UTC (weekend region empty). Last posted paper Mon 13:40, first gap paper Mon 18:58 → a 5.3h dead zone let a rolling W=40 hit the gap with zero duplicates.
+- TRAP: claude-code-action REFUSES to run from a branch that edits its own workflow file ("Workflow validation failed... identical content to the default branch"). So a workflow-editing PR canNOT be smoke-tested in real CI pre-merge, and the backfill had to run from main (it only needs the legacy rolling window, which main already has). First live outing of the band path = first scheduled run after merge (Thu 02:00 UTC, band Tue 18:00..Wed 18:00) — worth a glance.
 - repos:
   - PyAutoMind: feature/arxiv-digest-announcement-window