docs(queue): mark retired org sweep as historical

docs/doctoring/org-queue-sweep-rotation.md

@@ -1,8 +1,16 @@
 # Org-queue-sweep review-dispatch rotation
 
+> **Superseded for queue hygiene.** The organization sweep no longer inventories
+> or cancels repository-wide queued/in-progress Actions runs. That duplicate
+> queue-hygiene path was removed by `.github#1878` (`1b65dbc35e7183722ad77894e2d80b39993be90d`),
+> and current-head coalescing was later integrated into the merge scheduler.
+> The rotation material below remains historical evidence for the former
+> review-dispatch fairness mechanism, not a description of current stale-run
+> ownership.
+
 ## Problem
 
-`org-queue-sweep` in `pr-review-merge-scheduler.yml` walks every organization
+Historically, `org-queue-sweep` in `pr-review-merge-scheduler.yml` walked every organization
 repository once per 15-minute tick and consumes bounded, organization-wide
 review-dispatch budgets across that entire walk. Default-base work uses
 `ORG_SWEEP_REVIEW_DISPATCH_LIMIT` (default `1`); stacked work uses the separate
@@ -23,6 +31,15 @@ required review.
 
 ## Decision
 
+The current ownership boundary is:
+
+- `pr-review-merge-scheduler` owns review, merge, and branch-update state.
+- The integrated current-head coalescer owns same-PR stale-run cleanup.
+- The organization sweep does not repeat an Actions inventory per repository.
+
+The rotation decision below is retained as historical operational evidence for
+the former review-dispatch fairness implementation.
+
 Rotate the sweep's repository walk order by a rotation index before applying
 the unchanged organization-wide budgets. `rotation_offset = rotation_index %
 repository_count`; the walk starts at that offset and wraps. This spreads each

tests/test_org_queue_sweep_documentation_contract.py

@@ -0,0 +1,17 @@
+"""Contract for the superseded organization queue-sweep runbook."""
+
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+RUNBOOK = ROOT / "docs" / "doctoring" / "org-queue-sweep-rotation.md"
+
+
+def test_runbook_marks_removed_queue_hygiene_as_historical() -> None:
+    """The runbook must not describe removed repository-wide inventory as current."""
+    source = RUNBOOK.read_text(encoding="utf-8")
+
+    assert "Superseded for queue hygiene" in source
+    assert "does not repeat an Actions inventory per repository" in source
+    assert "#1878" in source
+    assert "historical operational evidence" in source