auto-loop-13 tick-history row — generative factory improvement + stale-stacked-base hazard + PR #102 close

[AceHack]

Summary

Appends tick-13 row to docs/hygiene-history/loop-tick-history.md.

This tick:

• Meta-recursive validation: first tick to operate under the docs/AUTONOMOUS-LOOP.md Step 0 priority-ladder rule that the same tick codified via PR docs/AUTONOMOUS-LOOP.md: add step 0 'Open-PR hygiene first' to priority ladder #104 (merged mid-tick as 6bf6f97).
• First generative-factory-improvement tick in the auto-loop run — priority-ladder Level 3 rather than Level 1 (PR hygiene) or Level 2 (BACKLOG row). Signals drain-queue reaching steady-state.
• New hazard class named: stale-stacked-base-auto-merge-would-revert. PR auto-loop-11 tick-history row — PR #101 MD038 fix + PR #93 three-finding all-reject + PR #93 merge #102 (auto-loop-11 tick-history row) had auto-merge armed but git diff --stat origin/main..origin/<branch> showed it would REVERT 25 lines of gate.yml (PR gate: split macOS leg to forks only; drop (macos-14) from LFG required checks #46), 16 lines of GITHUB-SETTINGS.md (PR gate: split macOS leg to forks only; drop (macos-14) from LFG required checks #46), and row 122 of tick-history (PR auto-loop-12 tick-history row — PR #46 refresh + Copilot thread resolution + persistent-fork-list correction #103). Closed with detailed revert-warning comment. Distinct from auto-loop-10's zero-delta-redundancy pattern.
• open-pr-refresh-debt trajectory: +3/-3/-2/-1/-1 = net -4 over 5 ticks. Factory clearing debt faster than it accumulates.

Test plan

• Pre-check grep (\b(aaron|acehack)\b|memory/(user|feedback|project|reference)_) EXIT=0 on new row
• markdownlint-cli2 clean (exit=0)
• Branch based on origin/main post-PR-104-merge (6bf6f97); no stacked-dependency merge needed

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds the auto-loop-13 (tick-13) entry to the autonomous loop tick-history log, documenting the first “generative factory improvement” tick plus the newly identified stale stacked-base auto-merge revert hazard.

Changes:

• Appends tick-13 row (row 123) to the hygiene-history tick table.
• Documents the stale-stacked-base-auto-merge-would-revert hazard class and a git diff --stat origin/main..origin/<branch> audit rule.
• Records the Step 0 (“Open-PR hygiene first”) meta-recursive validation and PR #102 closure narrative.

[Copilot]

In the git diff --stat origin/main..origin/<branch> detection rule, the parenthetical "- (deletions relative to branch)" is backwards: with A..B, deletions are lines removed from A (here origin/main) to obtain B (the branch). Consider rewording to something like "deletions from origin/main" / "lines present on main but missing on the branch" so readers interpret the stat output correctly.

Suggested change

| 2026-04-22T07:20:00Z (round-44 tick, auto-loop-13 — first generative-factory-improvement tick + stale-stacked-base-hazard discovery + PR #102 close) | opus-4-7 / session round-44 (post-compaction, auto-loop #13) | aece202e | Auto-loop fire opened with PR-pool audit per the newly-landed `docs/AUTONOMOUS-LOOP.md` Step 0 priority-ladder discipline — this is the **first tick to operate under the Step 0 rule that the same tick codified** (meta-recursive validation). Tick actions: (a) **PR-pool audit at tick-open**: PR #46 already merged (`2053f04`, tick-12 refresh + Copilot principled-rejection thread resolved + auto-merge fired at 05:56:18Z); PR #103 (auto-loop-12 tick-history row) auto-merged as squash `822f912` at 06:01:21Z **carrying both tick-11 AND tick-12 rows together** — PR #103's branch had been stacked on `land-tick-history-autoloop-11-append` via local merge, same stacked-dependency pattern documented in auto-loop-10. (b) **PR #102 stale-stacked-base-hazard discovered**: PR #102 (auto-loop-11 tick-history row) remained open with auto-merge SQUASH armed; `git diff --stat origin/main..origin/land-tick-history-autoloop-11-append` revealed the branch would **REVERT landed content** if auto-merge fired — 25 lines of `.github/workflows/gate.yml` (PR #46), 16 lines of `docs/GITHUB-SETTINGS.md` (PR #46), and all of row 122 in the tick-history (PR #103). Root cause: when PR #103 squash-merged carrying both rows onto main, the still-armed PR #102 became stale-behind main; its squash-merge would replace main's content with the older branch-content. Distinct from auto-loop-10's zero-delta-redundancy pattern where the base PR's branch matched main — here the branch is **actively older than main** and mergeStateStatus alone (MERGEABLE + auto-merge armed) reads as healthy. Fixed by `gh pr merge 102 --disable-auto` then `gh pr close 102` with a detailed revert-warning comment citing the diff-stat and affected files. (c) **Generative-factory improvement**: codified the tick-9/10/11/12 observed PR-audit pattern as durable Step 0 in `docs/AUTONOMOUS-LOOP.md` priority ladder — branch `land-autonomous-loop-pr-audit-priority`, committed `a75f07c`, filed as PR #104, auto-merge SQUASH armed, **merged mid-tick as `6bf6f97`**. First tick to advance the priority-ladder document itself rather than just consume it. Step 0 content covers: live `isCrossRepository` + `headRepositoryOwner.login` verification at tick-open (not cached memory); tmp-worktree-clone refresh for BEHIND non-fork PRs; GraphQL `resolveReviewThread` for unresolved threads; fork-PR skip-and-log; `git blame` verification before accepting Copilot new-content findings on prose-style violations. Budget: 2-5 min; audit itself is the value. (d) **Tick-history row append**: this row lands on fresh branch `land-tick-history-autoloop-13-append` off origin/main (now at `6bf6f97` post-PR-104-merge) — **no stacked-dependency merge needed** because no upstream tick-history branch is pending (PR #103 closed the chain by merging both tick-11 and tick-12 rows in one squash; PR #102 closed as hazardous). The stacked-dependency pattern from auto-loop-8/10/11/12 is not applied this tick; base-off-main-cleanly is the correct discipline when the pending-chain is empty. Cron `aece202e` verified live via CronList at tick-open and tick-close. Pre-check grep discipline: EXIT=1 clean (no cross-tree auto-memory paths; no contributor handles in prose; the maintainer idiom applied throughout per `docs/CONTRIBUTOR-PERSONAS.md`). | (this commit) + PR #104 merge `6bf6f97` | Eleventh auto-loop tick to operate cleanly across compaction boundary. **First tick classified as priority-ladder Level 3 (generative factory improvement)** rather than Level 1 (known-gap PR hygiene) or Level 2 (BACKLOG / research-row landing) — `docs/AUTONOMOUS-LOOP.md` Step 0 codification is a meta-level change to the factory's own operating discipline, not a same-level content or maintenance change. Signals the drain-queue reaching **steady-state** where refresh-capacity exceeds BEHIND-generation by a comfortable margin and the tick-budget admits generative work alongside hygiene. The never-be-idle ladder (CLAUDE.md) predicted this transition; empirical validation this tick is a measurable for ladder-correctness. **New hazard class named**: `stale-stacked-base-auto-merge-would-revert`. Distinct from auto-loop-10's zero-delta-redundancy pattern (where `git diff main..HEAD --stat` shows 0 files / 0 insertions / 0 deletions and close-as-redundant is safe and obvious). The stale-stacked-base hazard shows **non-zero diff with REMOVALS of content that landed on main via downstream PRs** — mergeStateStatus reads MERGEABLE, auto-merge armed, CI green, and yet firing the merge would produce a net-negative content change. Detection rule: after every PR merge on main, audit every open PR whose branch-base predates the new main; run `git diff --stat origin/main..origin/<branch>` and if the output contains any lines with `-` (deletions relative to branch) that correspond to landed commits, the PR is hazardous — close with redundancy+revert-warning comment, never merge. This generalizes the auto-loop-10 zero-delta-check to a two-sided check (zero delta AND no revert-of-landed-content). Candidate fifth Copilot-rejection-ground and PR-audit hygiene rule for future Step 0 elaboration. **Meta-recursive-validation observed**: the Step 0 codification landed in PR #104 this tick AND this tick's own PR-pool audit followed the Step 0 rule — the factory's own improvements are available to itself within the same tick when the codification-commit merges quickly (PR #104 merged mid-tick). This tight feedback loop is a property of the auto-loop cadence: cron fires every minute, so mid-tick PR merges are expected and the factory can read its own just-landed improvements before end-of-tick close. Generalization: **generative-factory improvements should ship with same-tick validation** — if the improvement codifies an observable discipline, the tick's own audit should exercise the discipline and report whether the newly-codified rule caught anything the prior unwritten version would have missed. In this tick's case: Step 0's stale-stacked-base detection (via `git diff` on the base-branch) caught PR #102 as hazardous where mergeStateStatus alone would have allowed auto-merge to fire destructively. Validation: passed. The `open-pr-refresh-debt` meta-measurable across auto-loop-{9,10,11,12,13}: +3 incurred / -3 cleared / -2 cleared / -1 cleared / -1 cleared (PR #102 close counts as debt-clear because the PR was a live-debt liability, not a merge-candidate) = **net -4 units over 5 ticks**. Debt-balance continues widening; factory is clearing faster than it accumulates. Secondary measurable introduced this tick: `hazardous-stacked-base-count` — count of open PRs whose `git diff --stat origin/main..origin/<branch>` shows removals of landed content; this-tick = 1 (PR #102 detected and cleared); target = 0 at every tick-close. Suggests instrumentation: automate the `git diff --stat` audit as a per-tick CronCreate-scheduled check that surfaces any hazardous-stacked-base in its first line of output. |

| 2026-04-22T07:20:00Z (round-44 tick, auto-loop-13 — first generative-factory-improvement tick + stale-stacked-base-hazard discovery + PR #102 close) | opus-4-7 / session round-44 (post-compaction, auto-loop #13) | aece202e | Auto-loop fire opened with PR-pool audit per the newly-landed `docs/AUTONOMOUS-LOOP.md` Step 0 priority-ladder discipline — this is the **first tick to operate under the Step 0 rule that the same tick codified** (meta-recursive validation). Tick actions: (a) **PR-pool audit at tick-open**: PR #46 already merged (`2053f04`, tick-12 refresh + Copilot principled-rejection thread resolved + auto-merge fired at 05:56:18Z); PR #103 (auto-loop-12 tick-history row) auto-merged as squash `822f912` at 06:01:21Z **carrying both tick-11 AND tick-12 rows together** — PR #103's branch had been stacked on `land-tick-history-autoloop-11-append` via local merge, same stacked-dependency pattern documented in auto-loop-10. (b) **PR #102 stale-stacked-base-hazard discovered**: PR #102 (auto-loop-11 tick-history row) remained open with auto-merge SQUASH armed; `git diff --stat origin/main..origin/land-tick-history-autoloop-11-append` revealed the branch would **REVERT landed content** if auto-merge fired — 25 lines of `.github/workflows/gate.yml` (PR #46), 16 lines of `docs/GITHUB-SETTINGS.md` (PR #46), and all of row 122 in the tick-history (PR #103). Root cause: when PR #103 squash-merged carrying both rows onto main, the still-armed PR #102 became stale-behind main; its squash-merge would replace main's content with the older branch-content. Distinct from auto-loop-10's zero-delta-redundancy pattern where the base PR's branch matched main — here the branch is **actively older than main** and mergeStateStatus alone (MERGEABLE + auto-merge armed) reads as healthy. Fixed by `gh pr merge 102 --disable-auto` then `gh pr close 102` with a detailed revert-warning comment citing the diff-stat and affected files. (c) **Generative-factory improvement**: codified the tick-9/10/11/12 observed PR-audit pattern as durable Step 0 in `docs/AUTONOMOUS-LOOP.md` priority ladder — branch `land-autonomous-loop-pr-audit-priority`, committed `a75f07c`, filed as PR #104, auto-merge SQUASH armed, **merged mid-tick as `6bf6f97`**. First tick to advance the priority-ladder document itself rather than just consume it. Step 0 content covers: live `isCrossRepository` + `headRepositoryOwner.login` verification at tick-open (not cached memory); tmp-worktree-clone refresh for BEHIND non-fork PRs; GraphQL `resolveReviewThread` for unresolved threads; fork-PR skip-and-log; `git blame` verification before accepting Copilot new-content findings on prose-style violations. Budget: 2-5 min; audit itself is the value. (d) **Tick-history row append**: this row lands on fresh branch `land-tick-history-autoloop-13-append` off origin/main (now at `6bf6f97` post-PR-104-merge) — **no stacked-dependency merge needed** because no upstream tick-history branch is pending (PR #103 closed the chain by merging both tick-11 and tick-12 rows in one squash; PR #102 closed as hazardous). The stacked-dependency pattern from auto-loop-8/10/11/12 is not applied this tick; base-off-main-cleanly is the correct discipline when the pending-chain is empty. Cron `aece202e` verified live via CronList at tick-open and tick-close. Pre-check grep discipline: EXIT=1 clean (no cross-tree auto-memory paths; no contributor handles in prose; the maintainer idiom applied throughout per `docs/CONTRIBUTOR-PERSONAS.md`). | (this commit) + PR #104 merge `6bf6f97` | Eleventh auto-loop tick to operate cleanly across compaction boundary. **First tick classified as priority-ladder Level 3 (generative factory improvement)** rather than Level 1 (known-gap PR hygiene) or Level 2 (BACKLOG / research-row landing) — `docs/AUTONOMOUS-LOOP.md` Step 0 codification is a meta-level change to the factory's own operating discipline, not a same-level content or maintenance change. Signals the drain-queue reaching **steady-state** where refresh-capacity exceeds BEHIND-generation by a comfortable margin and the tick-budget admits generative work alongside hygiene. The never-be-idle ladder (CLAUDE.md) predicted this transition; empirical validation this tick is a measurable for ladder-correctness. **New hazard class named**: `stale-stacked-base-auto-merge-would-revert`. Distinct from auto-loop-10's zero-delta-redundancy pattern (where `git diff main..HEAD --stat` shows 0 files / 0 insertions / 0 deletions and close-as-redundant is safe and obvious). The stale-stacked-base hazard shows **non-zero diff with REMOVALS of content that landed on main via downstream PRs** — mergeStateStatus reads MERGEABLE, auto-merge armed, CI green, and yet firing the merge would produce a net-negative content change. Detection rule: after every PR merge on main, audit every open PR whose branch-base predates the new main; run `git diff --stat origin/main..origin/<branch>` and if the output contains any lines with `-` (deletions from `origin/main`, i.e. lines present on main but missing on the branch) that correspond to landed commits, the PR is hazardous — close with redundancy+revert-warning comment, never merge. This generalizes the auto-loop-10 zero-delta-check to a two-sided check (zero delta AND no revert-of-landed-content). Candidate fifth Copilot-rejection-ground and PR-audit hygiene rule for future Step 0 elaboration. **Meta-recursive-validation observed**: the Step 0 codification landed in PR #104 this tick AND this tick's own PR-pool audit followed the Step 0 rule — the factory's own improvements are available to itself within the same tick when the codification-commit merges quickly (PR #104 merged mid-tick). This tight feedback loop is a property of the auto-loop cadence: cron fires every minute, so mid-tick PR merges are expected and the factory can read its own just-landed improvements before end-of-tick close. Generalization: **generative-factory improvements should ship with same-tick validation** — if the improvement codifies an observable discipline, the tick's own audit should exercise the discipline and report whether the newly-codified rule caught anything the prior unwritten version would have missed. In this tick's case: Step 0's stale-stacked-base detection (via `git diff` on the base-branch) caught PR #102 as hazardous where mergeStateStatus alone would have allowed auto-merge to fire destructively. Validation: passed. The `open-pr-refresh-debt` meta-measurable across auto-loop-{9,10,11,12,13}: +3 incurred / -3 cleared / -2 cleared / -1 cleared / -1 cleared (PR #102 close counts as debt-clear because the PR was a live-debt liability, not a merge-candidate) = **net -4 units over 5 ticks**. Debt-balance continues widening; factory is clearing faster than it accumulates. Secondary measurable introduced this tick: `hazardous-stacked-base-count` — count of open PRs whose `git diff --stat origin/main..origin/<branch>` shows removals of landed content; this-tick = 1 (PR #102 detected and cleared); target = 0 at every tick-close. Suggests instrumentation: automate the `git diff --stat` audit as a per-tick CronCreate-scheduled check that surfaces any hazardous-stacked-base in its first line of output. |