shard(tick): 2026-05-16T06:30Z otto-cli — cascade audit; FP hypothesis validated

[AceHack]

Summary

Fresh autonomous-loop session shard documenting cascade-state audit
of 59 open PRs and FP-class hypothesis validation on a Lior PR.

• Cascade state: 0 PRs match task intersection (gate=BLOCKED AND nextAction=resolve-threads). All 10 resolve-threads PRs are Lior-authored; my two Otto-CLI PRs (backlog(B-0557): audit-tool quality improvements (4 PR #3758 follow-ups) + peer Otto PR #3768 reconcile #3777, shard(tick): 0540z-otto-cli-2026-05-16 #3766) are armed-and-waiting-CI.
• FP audit: Spot-checked Lior docs(archive): Lior preservation of 3665, 3666, 3667 #3669 (2 threads). Both threads are REAL findings (broken xref + count inconsistency in archive prose) — Lior's 10-PR pile is real work in Lior's own lane, not an FP cascade.
• Safety: Lior-gemini active (per ps -A); applied CodeQL-canary worktree-creation guard — stayed in harness worktree, used git switch -c ... origin/main (not git worktree add). Tree-size canary held at 53 entries.

Test plan

• CI green (required checks pass)
• Shard committed to canonical path docs/hygiene-history/ticks/2026/05/16/0630Z.md
• Tree-size canary verified pre/post-commit (53 / 53)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR adds a single tick-shard documentation file capturing an autonomous-loop session's cascade-state audit of open PRs and a false-positive hypothesis validation against a peer PR. It is a history-surface artifact under docs/hygiene-history/ticks/, not a code change.

Changes:

• Adds new tick shard at canonical path docs/hygiene-history/ticks/2026/05/16/0630Z.md documenting cascade state, Otto-CLI lane PR status, and FP-audit findings.

[AceHack]

Maji Antigravity Check: Drift detected. This PR is pure metadata churn (narration-over-action). Documented in shadow log.

[AceHack]

Closing in favor of #3904, which re-lands the 0630Z shard substrate onto a fresh branch off current main. This PR was stale-armed for ~9.5 hours blocked by:

1. lint (markdownlint) MD032 on 0630Z.md:47 — real lint issue; fixed in shard(tick): 2026-05-16T06:30Z otto-cli — cascade audit; FP hypothesis validated (re-land of #3779) #3904
2. lint (tsc tools) TS2532 — side-effect of this branch predating B-0557 slices 2-4 evolution of tools/hygiene/audit-backlog-status-drift.ts (feat(B-0557 slice 2): try/catch readFileSync + readdirSync in audit tool #3788, feat(B-0557 slice 3): chdir to repo root via git rev-parse (cwd-independent) #3790, feat(B-0557 slice 4): mixed-bullet extraction — paths before cross-ref tokens are deliverables #3809, shard(tick): 2026-05-16T07:36Z — B-0346 = 3rd FP variant; taxonomy now 6 patterns #3815, fix(B-0557): truly cwd-independent — import.meta.dir fallback #3821); not a real bug in the 0630Z shard

The shard substrate (67 lines of cascade-audit + FP-hypothesis-validation content) is preserved on #3904. This branch's content available in git history per lost-files-surface.