docs: record the eighth 2026-09-04 block (overnight orchestrator merges, second half)

[Chris0Jeky]

Summary

Adds the eighth 2026-09-04 block to docs/STATUS.md, recording the second half of the overnight
orchestrator lane: main 65c77a53f to c174a517a, thirteen merges. Same shape as the seventh
block — one bullet per merged PR with issue, PR, merge SHA, shipped behaviour, evidence counts and
what is not verified, grouped backend / frontend / guards-tests-docs, closing with a
"Not shipped reality" line.

The header states once that Codex credits stayed exhausted (SC-9) so every PR carried one
fresh-context independent reviewer, and that control-plane PRs #2502, #2506 and #2522 are
parked for the maintainer under ADR-0066 / SC-10.

Recorded PRs and merge SHAs

PR	Issue	Merge
#2484	#2044	bfe8daa09
#2498	#1866 (ADR-0068)	17e48815e
#2509	docs (seventh block)	9e431ab02
#2507	#2163	6c9d3b876
#2503	#1637	8962b9ada
#2497	#1652	63cb8754d
#2512	SC-10 human-action item	e88e5e513
#2505	#2209	0c9ef2219
#2513	#2457	1d768caaa
#2511	#1987 (closes)	892d6c74e
#2515	#2193 (Refs)	49ace6799
#2514	#1949 slice (Refs)	bc4723144
#2525	#2008 (closes)	c174a517a

Two corrections found while writing, both recorded in the block rather than silently omitted:

• #2496 did not reach main. It was merged into its stacked base branch
  issue-2430/board-mutation-alert after that base had already landed as #2495, so its merge
  c60d0156a is not an ancestor of main and the #2434 fix has not shipped. Recorded under
  "Not shipped reality" for its owner to re-target.
• #2527 (#2141) was still OPEN at writing time, so it is listed among the open PRs, not
  as a merge.

Docs-only; merge SHAs read from GitHub (gh pr view --json mergeCommit) and cross-checked against
git log --first-parent 65c77a53f..origin/main. No masterplan or ADR edits; Last Updated
unchanged at 2026-09-04.

Verification

• node scripts/check-docs-governance.mjs — passed.
• git diff --stat — docs/STATUS.md, 21 insertions, 0 deletions (no reflow of neighbouring blocks).
• Merge order and the #2496 non-ancestry confirmed with git log --first-parent and
  git merge-base --is-ancestor.

Not verified: the per-PR evidence counts are transcribed from each PR body and its review-gate
comment; no backend, frontend or Playwright suite was re-run for this docs change.

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[Chris0Jeky]

Review gate (docs-only, no connector): one fresh-context reviewer verified all 13 behavioural claims TRUE against the tree at the head, confirmed #2496 is absent from main and #2527 listed as open. Verdict SHIP. MEDIUM declined as non-blocking: SC-10 names the dev-up PR as 'the #1898 PR once open' rather than by number #2522 — same item, will be numbered in the next OUTSTANDING_TASKS touch; LOWs (duplicate #2527 mention, SC-10 membership described twice) declined. Merging when docs-governance CI is green.