diff --git a/docs/pr-preservation/608-drain-log.md b/docs/pr-preservation/608-drain-log.md new file mode 100644 index 00000000..41af2be2 --- /dev/null +++ b/docs/pr-preservation/608-drain-log.md @@ -0,0 +1,98 @@ +# PR #608 drain log — superseded by #613 (consolidated-backfill); 13:41:52Z row preserved on main + +PR: +Branch: `tick-history/2026-04-26T13-42Z` (approximate; refs/pull/608/head canonical) +Outcome class: **CLOSED-NOT-MERGED** (superseded; 2nd-agent verified equivalent) +Drain session: 2026-04-26 (Otto, autonomous-loop continuation) +Total threads drained: 0 (closed during consolidation chain before review activity) +Rebase context: closed via consolidated-backfill PR #613 absorbing parallel-DIRTY siblings. + +Per Otto-250 + task #268 backfill. This drain-log documents the +clean equivalent-supersession case (no substrate loss; row absorbed +into #613 then landed on main). Sibling drain-logs (#607-, #612-) +documented the partial-loss-then-recovery cases for the same +parallel-tick cohort. + +--- + +## Outcome + +- **Opened**: 2026-04-26 ~13:41Z (added single tick-history row at + 13:41:52Z — task #276 gating discovery + #602 MD032 fix) +- **Closed**: 2026-04-26 13:55:07Z (superseded by consolidated-backfill + PR #613 which absorbed sibling parallel-DIRTY tick-history rows) +- **Substrate-preservation status**: complete. 13:41:52Z row landed on + main via #613 byte-identical to #608's added content. +- **Branch retention**: retained on origin per Otto-238 + +## Otto-347 2nd-agent audit verdict (2026-04-26 16:30Z) + +VERIFIED EQUIVALENT: + +- 13:41:52Z on origin/main — EXACT MATCH to #608's added content +- No other files modified +- No substrate lost + +## What was on this PR's branch + +Single tick-history row added: + +**13:41:52Z** — autonomous-loop tick documenting: + +1. **Task #276 (direct-to-main tick-history) gating discovery** — confirmed + gated on B-0032 heartbeat-file-integrity threat-model review. Filed + as understanding, not work; would skip the discipline if implemented + today. + +2. **PR #602 MD032 lint fail fixed** (push 5cecc81): the absorb doc's + verbatim Amara math sections had inline bulleted lists without + surrounding blank lines. Auto-fix python script: insert blank line + before list-start when prev was non-blank-non-list, blank line after + list-end when next was non-blank-non-list. 15 insertions; no content + edits, Amara/Gemini verbatim preserved. + +3. **Verified the 3 substrate-primitive lints I noted earlier do NOT + exist**: `check-jq-add-default.sh`, `check-tick-history-codespan-pipes.sh`, + `check-branch-protection-snapshot-stale.sh` — all not in `tools/hygiene/`. + Building them is real work; held pending higher-priority items. + +The row's content has compound substrate value: it documents Otto-289 +verify-target-exists discipline applied successfully (verified 3 absent +substrate-primitives), captures task #276 gating context, and tracks +the #602 MD032 fix that was part of the multi-pass cross-AI math +review chain landing. + +## Pattern observations (Otto-250 training-signal class) + +1. **Clean-supersession case**: in contrast to #607 + #612 (where + 13:38Z + 13:52Z rows got dropped in #618→#620 transition), #608's + 13:41Z row was successfully absorbed into #613 then to main. Same + parallel-tick cohort; different multi-stage path; different outcome. + The variable that explains the difference: which consolidated-backfill + PR absorbed each row + whether that PR's clean-reapply correctly + extracted all the absorbed content. #613 succeeded; #618→#620 + partially failed; same class of operation, different reliability. + +2. **Compound-substrate row but no loss**: even though this row had + compound substrate value (Otto-289 verify success + task #276 gating + + #602 MD032 fix), the supersession path absorbed it cleanly because + #613 was a one-shot consolidated-backfill that didn't undergo the + #618→#620 hallucinated-mental-model failure. + +3. **The 2nd-agent audit saved time + cost** by confirming this case + was clean: the audit ran in ~2 min and verified the byte-identical + match against main, freeing the recovery effort to focus on the + actual losses (#607's 13:38 + #612's 13:52). Without the audit, I + might have done unnecessary recovery work on this PR's content too. + +## Composes with + +- Otto-238 retractability (closed branch refs preserved indefinitely) +- Otto-250 PR-reviews-as-training-signals +- Otto-347 (the 2nd-agent audit that verified this case) +- 607-drain-log.md + 612-drain-log.md (sibling drain-logs from same + parallel-tick cohort; different outcomes documenting why #613 + succeeded where #618→#620 partially failed) +- #613 (the consolidated-backfill that absorbed this PR's row) +- Otto-289 verify-target-exists (the discipline this PR's row documents + in action)