shard(tick): 2210Z — fresh cold-boot; cron re-armed; null actionable

[AceHack]

Summary

• Fresh autonomous-loop cold-boot at 22:10Z; SessionStart hook caught empty CronList → armed <<autonomous-loop>> job d97cdace.
• Refresh: origin/main at 1818aaa (PR feat(persona-otto): §33 archive migration — 26 files + MEMORY.md update (decomposed) #3598 decomposed migration merged 2 min before this tick).
• PR queue: 37 OPEN, 35 DIRTY-rebase-wait — normal post-merge-cascade state; bulk-rebase out of scope.
• PR feat(persona-otto): §33 archive migration — 26 files + MEMORY.md update #3590 (this primary worktree's branch) has 70 files vs feat(persona-otto): §33 archive migration — 26 files + MEMORY.md update (decomposed) #3598's 26 — left open; closing would discard ~44 files of unmerged scope.
• Lior-gemini ACTIVE during this tick (PIDs 73901/73902/74217); canary-rule risk window observed; pre/post-commit tree-size 52→52 (no corruption).
• Audit-first-then-decide → null actionable; plateau-shard precedent (2112Z, 2050Z, 2055Z, 2101Z) supports.

Test plan

• Pre-commit git ls-tree HEAD | wc -l = 52
• Post-commit git ls-tree HEAD | wc -l = 52 (no Lior corruption)
• Cron d97cdace armed and visible in CronList
• Shard committed to fresh branch off origin/main (no contamination of feat(persona-otto): §33 archive migration — 26 files + MEMORY.md update #3590)
• Auto-merge to be armed by maintainer if shard-CI passes

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Pull request overview

Adds a single hygiene-history tick shard documenting the 22:10Z autonomous-loop cold boot, cron re-arming, PR queue state, active Lior risk disclosure, and null-actionable decision.

Changes:

• Adds a new 2210Z.md tick record under docs/hygiene-history/ticks/2026/05/15/.
• Captures cron state, queue survey, #3590/#3598 context, and commit-tree canary verification.