memory(feedback): multi-Otto contamination class #5 — branch-name poaching#3913
Merged
AceHack merged 2 commits intoMay 16, 2026
Merged
Conversation
…m); recoverable contamination Pattern 3 documented All 8 cascade PRs merged on main (1531Z → 1634Z arc). New empirical finding: Pattern 3 of multi-Otto contamination — between-Bash-tool-call HEAD shift caused a misdirected `git reset --hard origin/main` against peer's branch. Recovered cleanly via reflog + `git reset --hard <peer-commit>`. Reinforced discipline: `git branch --show-current` immediately BEFORE any mutating operation (not just commit), at every mutating-action boundary. Composes with B-0519 multi-Otto contamination RCA. Damage scope: local only; peer can recover via fetch+reset; ~5 GraphQL + 2min cost. Co-Authored-By: Claude <noreply@anthropic.com>
…ching + uniqueness-prefix accretion mitigation Empirical observation from 2026-05-16 audit cycle: peer-Otto pushed its own content to a branch name I created (otto-cli-b0549-audit-...), leaving the SHA on origin replaced even though local refs were intact. 5th contamination class catalogued alongside the prior 4: 1. Worktree branch-switch between Bash calls 2. Commit lands on peer's branch label 3. .git/index.lock race 4. ls-remote eventual-consistency stale read 5. (NEW) Peer pushes OWN content to my branch name on origin Mitigation: 4-level uniqueness-prefix accretion. The 4th level (otto-cli-shard-<HHMM>z-<topic>-unique-<date>) was empirically verified to avoid class-5 collisions in the high-contention final hour of the session arc. Composes with claim-acquire-before-worktree-work.md (which covers classes 1-4) and the audit-subclass-catalog memory file from earlier this session. Co-Authored-By: Claude <noreply@anthropic.com>
|
You have reached your Codex usage limits for code reviews. You can see your limits in the Codex usage dashboard. |
AceHack
deleted the
otto-cli-shard-1654z-contamination-class5-unique-2026-05-16
branch
There was a problem hiding this comment.
Pull request overview
Adds durable documentation for multi-Otto “contamination class #5” (remote branch-name namespace collisions / “branch-name poaching”) and indexes it into the always-loaded memory stack, with a tick-history shard capturing a related recoverable contamination sub-case.
Changes:
- Add a new
memory/feedback_*.mdentry documenting class #5 and the “4-level uniqueness-prefix accretion” mitigation. - Update
memory/MEMORY.mdauto-index to include the new memory entry (and reflect updated heap count). - Add a hygiene-history tick shard (
1644Z) recording a recoverable HEAD-shift / reset incident and reinforced discipline.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| memory/MEMORY.md | Adds the new class-#5 memory entry to the auto-index and updates the heap count. |
| memory/feedback_multi_otto_branch_name_poaching_contamination_class_5_otto_cli_2026_05_16.md | New feedback memory file describing the empirical class #5 failure mode and mitigation via more-unique branch naming. |
| docs/hygiene-history/ticks/2026/05/16/1644Z.md | New tick shard documenting cascade completion and a recoverable contamination sub-case (HEAD shift mid-branch workflow). |
2 tasks
AceHack
added a commit
that referenced
this pull request
May 16, 2026
…reconciliation (#3915) * chore(b-0122): close — peer-call TS migration complete (11th cycle close-row) Audit-triage discovery: pure drift. 0 .sh files, 12 .ts files in tools/peer-call/. Rule 0 (no .sh except install-graph) cites this migration as canonical example. Close + Resolution + BACKLOG.md regen + last_updated bump (2026-05-02 → 2026-05-16). Co-Authored-By: Claude <noreply@anthropic.com> * shard(tick): 2026-05-16T17:06Z — settling tick; Pattern 3 ↔ class #1 reconciliation PR #3914 (1657Z) merged. Peer Otto's PR #3913 landed 5-class contamination taxonomy. My 1644Z "Pattern 3" maps to class #1 (branch-switch between Bash calls), specifically the failure- recovery sub-case (`git reset --hard` against contaminated HEAD). No substantive PR; no brief-acks; settling-tick framing names that sustainable autonomous-loop cadence is NOT "substantive PR every cron tick" but "name what's real, advance only when bounded scope allows, let the system quiet." Rate-limit fresh post-reset (4283 GraphQL); normal tier. Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: Claude <noreply@anthropic.com>
AceHack
added a commit
that referenced
this pull request
May 16, 2026
…ntinues (#3918) PR #3915 (1706Z settling) MERGED. 11-PR session arc (1531Z → 1706Z) on cron-tick discipline durably on main: - Path-depth ref table (PR #3903) - Pattern 3 / class #1 anchor (PR #3912) - Peer's 5-class taxonomy (PR #3913) - Settling-tick framing (PRs #3914 + #3915) Substantive backlog rows (B-0030, B-0027 etc.) deferred to quieter peer-saturation windows where start-gate work + bounded-context contamination recovery overhead is lower. No brief-acks; not in Standing-by. Single-observation tick. Co-authored-by: Claude <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Final substrate landing of the 2026-05-16 audit cycle session arc. 5th multi-Otto contamination class catalogued:
.git/index.lockraceEmpirical anchor: PR #3907's path required pushing to
otto-cli-shard-1618z-b0549-audit-unique-2026-05-16after peer-Otto poachedotto-cli-b0549-audit-2026-05-16-1618zwith their own commit (a48a7de).Class #5 is structurally different from classes 1-4: REMOTE branch-namespace collision, not LOCAL state. Local mitigations don't catch it.
This PR's own branch (
otto-cli-shard-1654z-contamination-class5-unique-2026-05-16) uses the 4th-level prefix as live demonstration.🤖 Generated with Claude Code