fix(tick): reconcile 1854Z PR counts

[AceHack]

Summary

• reconcile the 1854Z tick shard totals with the listed PR states: 8 merged and 2 in CI for PRs research(absorb): DeepSeek validates glass-halo-on-the-builder as alignment-work precondition (Aaron 2026-05-12 via Aurora) #2824-docs(memory): civ-sim Pauli-exclusion-for-agenda EXPLAINS the WHY of boson-fermion symmetry breaking — identity carriers vs shared substrate (Aaron 2026-05-12) #2833
• avoid implying all ten follow-on PRs had landed at tick close

Checks

• bunx markdownlint-cli2 docs/hygiene-history/ticks/2026/05/12/1854Z.md
• git diff --check origin/main..HEAD

Follow-up for review feedback on #2834, which merged before this count-only correction could be pushed.

[Copilot]

Pull request overview

Reconciles the 1854Z tick shard narrative with the actual PR state at tick close, ensuring the tick doesn’t imply all follow-on PRs had already landed.

Changes:

• Corrects the shard totals for PRs #2824–#2833 to 8 merged and 2 in CI.
• Updates the operational-state rollup to reflect 8/10 merged for the post-1807Z follow-on set.