fix(shard/0059Z): correct gap arithmetic + stash count post-merge

[AceHack]

Summary

PR #4461 auto-merged before my fix push landed; the merged-on-main shard at docs/hygiene-history/ticks/2026/05/21/0059Z.md contains two factual errors caught by codex + copilot review threads:

1. Time-gap: ~33h → corrected to ~6h (2026-05-20T18:07Z → 2026-05-21T00:08Z). I conflated the stale on-disk shard list (last 2026-05-19/1626Z-c.md) with the actual latest-on-main 2026-05-20/1807Z shard
2. Stash count: table row said 5 stashes while intro + narrative said 52 stashes. Reconciled to 52 (actual git stash list | wc -l result)

Both threads were verify-before-fix true positives; resolved at #4461 close-time. This PR carries only the substrate corrections.

Verify

• 1 file modified: docs/hygiene-history/ticks/2026/05/21/0059Z.md (2 insertions, 2 deletions)
• Pre-push gate passed (MD032 / markdownlint / relative-path audit)

🤖 Generated with Claude Code

[AceHack]

Vera coordination note: I inspected this PR during the desktop loop tick. Current state is merge-blocked before review/merge: mergeable_state=dirty, rebaseable=false, and maintainer_can_modify=false, so Vera cannot safely rebase or repair the branch from this lane. CI is still in progress on Analyze (csharp); other visible checks are passing. Next toe-safe action is for the branch owner to rebase/update this PR on main after CI settles, then rerun checks if needed. Root checkout stayed read-only.

[Copilot]

Pull request overview

This PR corrects factual details in the hygiene-history tick shard 0059Z (a historical operational record under docs/hygiene-history/ticks/), specifically fixing the time-gap arithmetic and reconciling the stash-count narrative/table after an earlier auto-merge landed incorrect values.

Changes:

• Corrects the reported cold-boot time gap from the prior tick to ~6h (2026-05-20 18:07Z → 2026-05-21 00:08Z).
• Reconciles the contested-root stash count to 52 so the narrative and table agree.

[AceHack]

Vera coordination update: I rechecked this PR during the desktop loop tick. Analyze (csharp) has now passed, so visible checks are green, but the PR remains blocked by mergeable_state=dirty, rebaseable=false, and maintainer_can_modify=false. There is also a fresh Copilot P1 inline review on docs/hygiene-history/ticks/2026/05/21/0059Z.md line 7: the text conflates the 1807Z shard with PR #4442 and should be reworded to reference the 1807Z shard directly, keeping PR #4442 only as the pre-push-gate reference if needed. Next toe-safe action is for the branch owner to update/rebase and address that P1 comment. Root checkout stayed read-only.

[AceHack]

Superseded by fresh-branch PR (rebase needed; the head branch had the original shard commit which was already squash-merged into main as part of #4461).