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AceHack merged 1 commit into from
May 21, 2026
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shard(2026-05-21/0149Z): orphaned-branch triage — substrate-drift discriminator generalizes #4472

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83 changes: 83 additions & 0 deletions docs/hygiene-history/ticks/2026/05/21/0149Z.md
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| 2026-05-21T01:49Z | opus-4-7 / autonomous-loop | f856d175 | substantive — follow-up to [PR #4461](https://github.com/Lucent-Financial-Group/Zeta/pull/4461) + [PR #4468](https://github.com/Lucent-Financial-Group/Zeta/pull/4468): orphaned `otto/2012z-...` branch triage discovery — 4 of 5 commits' substrate already rescued on main via peer agents; substrate-drift discriminator generalizes to orphaned-branch triage | -- | substrate-drift-discriminator generalization shard |

# Tick 0149Z — 2026-05-21 — orphaned-branch triage discovery: substrate-drift discriminator generalizes

## Substantive

Tick 0059Z ([PR #4461](https://github.com/Lucent-Financial-Group/Zeta/pull/4461) merged with errors → [PR #4468](https://github.com/Lucent-Financial-Group/Zeta/pull/4468) corrections) named the carry-forward as **"triage 5 orphaned commits on `otto/2012z-...` (HC-8 NCI + Agora V6 constitution + Mirror/Beacon)"**. This tick verified the orphaned-commit state against current `origin/main` and found the triage scope was overestimated.

**Orphaned commit verification table** (run from contested-root worktree at `~/Documents/src/repos/Zeta` since the branch IS the contested root's checkout):

| Orphaned commit | On-main status | Action needed |
|---|---|---|
| `f0abf3ed` HC-8 NCI (2 files, +60 lines) | **Already on main** as `2df803c5` ([PR #4205](https://github.com/Lucent-Financial-Group/Zeta/pull/4205) — *"rescue(HC-8): land Aaron's stranded f0abf3e"*). Cherry-pick attempt → "nothing to commit, working tree clean" | None — fully rescued |
| `29d89be8` Agora V6 followup (4 files, +674 lines) | First file `B-0646-...md` shows **0 lines diff vs main** — backlog row identical | Spot-check remaining 3 files; likely fully rescued |
| `09a9a3c2` V6 constitution (32 files, +8610 lines) | First file `B-0635-...md` shows 41 lines diff vs main — partial drift | Cell-by-cell triage needed (skip the 4738-line bootstream research file from this; check the constitution + backlog rows only) |
| `2ca87ef8` B-0471/B-0472 (4 files, ~83 net changes) | First file `B-0471-...md` shows 30 lines diff vs main | Cell-by-cell triage needed |
| `467424ec` Lior prompt fix (`.gemini/bin/lior-loop-tick.ts`, +4 lines) | 22 lines diff vs main — Lior prompt has evolved since 2026-05-18 | **DO NOT re-apply** — Lior's prompt has been updated repeatedly since the orphaned commit; re-applying a 2026-05-18 prompt would regress |

## Substrate-drift discriminator generalizes to orphaned-branch triage

The discriminator named in [`.claude/rules/backlog-item-start-gate.md`](../../../../../../.claude/rules/backlog-item-start-gate.md) step 0 (*"if all primary artifacts exist on disk AND every acceptance bullet has a corresponding merged PR → row is drift, not work; close the row"*) generalizes to a different surface this tick:

> **Orphaned-branch triage discriminator** — before assuming orphaned commits need re-landing, check the substrate they encode against current `origin/main`:
>
> 1. For each commit, list the first file touched via `git show --name-only --format="" <sha> | head -1`
> 2. Run `git diff origin/main..<sha> -- <file>` and check the line count
> 3. **If 0 lines** → substrate identical; commit already on main via a different path (rescue PR, peer agent re-author, Lior preservation, etc.); no action
> 4. **If 20-50 lines** → partial drift; substrate has evolved on main; cell-by-cell triage needed; likely the on-main version is preferred
> 5. **If hundreds of lines** → genuine deltas; cherry-pick worth considering (after operator awareness)

**Why this generalization matters**: peer agents (Lior preservation passes, peer Otto rescues, decompose-into-slices patterns) operate on faster cadence than slow-cold-boot Otto. By the time a stale fresh-cold-boot session finds an "orphaned" branch, peer agents have often rescued the load-bearing substrate via separate PRs. Assuming re-landing without verification produces:

- **Duplicate substrate** — two PRs landing the same content, one of which gets blob-flagged + decomposed
- **Substrate regression** — re-applying a stale commit OVER newer-on-main substrate (especially the Lior prompt fix case where the prompt has evolved)
- **Wasted operator review** — operator reviewing N PRs that aren't actually delta-PRs

## Discovery sequence — why this finding surfaced this tick

The 0059Z shard's carry-forward (*"Triage the 5 orphaned commits on `otto/2012z-...`"*) assumed re-landing was needed. The actual sequence:

1. **Tick 0144Z**: I attempted to cherry-pick `f0abf3ed` (HC-8 NCI) onto a fresh branch off current `origin/main`
2. `git cherry-pick f0abf3ed` returned `(all conflicts fixed: run "git cherry-pick --continue")` followed by `nothing to commit, working tree clean` — indicating the changes were already applied
3. `grep "HC-8" docs/ALIGNMENT.md` on the worktree (which is at `origin/main` HEAD `7dd66fb7`) confirmed the substrate present
4. `git log --oneline origin/main --grep="HC-8|Non-Coercion"` found `2df803c5` = the rescue PR #4205
5. Spot-check of the other 4 orphaned commits via `git diff origin/main..<sha>` on first-file showed similar partial-or-full rescue

The substrate-honest read: **the rescue was already done by another agent** between 2026-05-18 (orphaned commit creation) and 2026-05-21T00:08Z (this session's cold-boot). I had no need to re-land any of it; my carry-forward was over-conservative.

## Closes the 0059Z carry-forward as superseded-by-discovery

The 0059Z shard's *"Carry-forward (next-tick substantive work)"* section listed 5 commits + the 311 working-tree mods + 52 stashes as needing triage. This tick supersedes that list with the verified-rescue table above.

**Remaining genuinely-actionable work**:

- **Spot-check the 4 remaining commits** more carefully than just first-file diff (this tick checked only one file per commit)
- **DO NOT re-apply `467424ec` Lior prompt fix** — confirmed stale; current Lior prompt is newer
- **Mark `otto/2012z-...` branch as superseded** in next-cycle work (e.g., update backlog rows or add a memory file pointer)
- **311 working-tree mods + 52 stashes in contested root** — these remain as separate triage work (likely most stashes are obsolete; mods may be reconcilable via `git stash drop` once peer-Otto session boundaries verified)

## Verify

- `git diff --stat` will show 1 new file: `docs/hygiene-history/ticks/2026/05/21/0149Z.md`
- Pre-push gate: `bun tools/hygiene/check-shard-before-push.ts`
- Worktree HEAD = `7dd66fb7` (current `origin/main` carrying my just-merged [PR #4468](https://github.com/Lucent-Financial-Group/Zeta/pull/4468))
- 6-up relative paths used for `.claude/rules/*` references

## CronList

Sentinel `f856d175` (autonomous-loop, `* * * * *`) ✓ still armed.

## Composes with

- [PR #4461 (0059Z shard)](https://github.com/Lucent-Financial-Group/Zeta/pull/4461) — original cold-boot shard whose carry-forward this tick supersedes-by-discovery
- [PR #4468 (0059Z shard fix)](https://github.com/Lucent-Financial-Group/Zeta/pull/4468) — corrected gap arithmetic + stash count
- [PR #4205 (HC-8 rescue)](https://github.com/Lucent-Financial-Group/Zeta/pull/4205) — the peer-agent rescue that made my re-landing unnecessary
- [`.claude/rules/backlog-item-start-gate.md`](../../../../../../.claude/rules/backlog-item-start-gate.md) — substrate-drift discriminator at row-scope; this shard generalizes it to orphaned-branch-scope
- [`.claude/rules/holding-without-named-dependency-is-standing-by-failure.md`](../../../../../../.claude/rules/holding-without-named-dependency-is-standing-by-failure.md) — the brief-ack discipline that produced the 0059Z anchor
- [`.claude/rules/honor-those-that-came-before.md`](../../../../../../.claude/rules/honor-those-that-came-before.md) — peer agents (Lior rescues, peer Otto) honored by verifying substrate exists before re-landing
- [`.claude/rules/refresh-before-decide.md`](../../../../../../.claude/rules/refresh-before-decide.md) — fundamental invariant; verify against current `origin/main` before acting

## Visibility-stop

Substrate landed: this 0149Z follow-up shard documenting the orphaned-branch-mostly-rescued discovery + the generalization of the substrate-drift discriminator to orphaned-branch triage. The 0059Z carry-forward is superseded-by-discovery. Sentinel ✓ armed. End.
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