[noahgift]

Shards first: workspace-test-shard (ci.yml:444)

-    runs-on: ${{ github.event_name == 'merge_group' && fromJSON('["self-hosted","Linux","X64","mq"]') || fromJSON('["self-hosted","Linux","X64","clean-room"]') }}
+    runs-on: ${{ github.event_name == 'merge_group' && fromJSON('["self-hosted","Linux","mq"]') || fromJSON('["self-hosted","Linux","clean-room"]') }}

Audit caveat (handoff/x64-pin-audit-1021.md): last aarch64 measurement is 2026-09-12 (ci/sections.yml:97-103, 59k tests, four aarch64-only reds fixed then). Tests under cfg(target_arch = "x86_64") compile out on aarch64, so an aarch64 shard silently runs fewer tests; the Σ-executed check (ci.yml:509-528) is only self-consistent with one arch per event. x86-main and its determinism[X64] leg keep an X64 home. Revert rule applies.

Also

• mg-reuse (:103) and x86-main-advisories (:317): [self-hosted, Linux, X64, clean-room] -> [self-hosted, Linux, clean-room], matching mg-reuse-self-test (:143). No amd64/x86_64 strings in their scripts; the arm64 sovereign-ci image ships cargo-deny.
• x86-main (:160) unchanged: jq-linux-amd64 pin (:183-196) and determinism[X64] (:252).
• scripts/ci_mg_reuse.sh: pool-row expectations follow the new labels (first quorum round caught the pinned row); --self-test 105 passed, 0 failed.

Operator 14:06Z/14:18Z via aprender-57. One commit. Not armed: needs quorum 3/3 + 2 seats.

🤖 Generated with Claude Code

[noahgift]

quorum-review (AD-04): NOT agreed (auto_merge: checked=true was_armed=false disarmed=false)

{
 "ticket": "PMAT-5736",
 "head": "12494f5d71070b6b8dc9018395d7a54ff5fff3b4",
 "width": 3,
 "executor": "agy",
 "agreed": false,
 "auto_merge": {
  "checked": true,
  "was_armed": false,
  "disarmed": false,
  "note": "auto-merge not armed"
 },
 "lanes": [
  {
   "lane": 1,
   "verdict": "FAIL",
   "findings": 5
  },
  {
   "lane": 2,
   "verdict": "FAIL",
   "findings": 4
  },
  {
   "lane": 3,
   "verdict": "FAIL",
   "findings": 5
  }
 ]
}

[noahgift]

quorum-review (AD-04): three PASS — agreed (auto_merge: checked=true was_armed=false disarmed=false)

{
 "ticket": "PMAT-5736",
 "head": "74f7f06e6cc5fd2b9a08429df973b278f2469164",
 "width": 3,
 "executor": "agy",
 "agreed": true,
 "auto_merge": {
  "checked": true,
  "was_armed": false,
  "disarmed": false,
  "note": "auto-merge not armed"
 },
 "lanes": [
  {
   "lane": 1,
   "verdict": "PASS",
   "findings": 5
  },
  {
   "lane": 2,
   "verdict": "PASS",
   "findings": 3
  },
  {
   "lane": 3,
   "verdict": "PASS",
   "findings": 0
  }
 ]
}

[noahgift]

Non-author seat (aprender-triage-worker, Sonnet) @74f7f06e6c: APPROVE. Read the 2-file diff (ci.yml, ci_mg_reuse.sh). Executed on the PR head: ci_mg_reuse --self-test 105/0 (pool-row mutants incl. pr-path-takes-mq and mq-lane-dropped-on-shard still red), check_runner_labels ok, actionlint only the pre-existing SC2086. Drops X64 from mg-reuse, x86-main-advisories, workspace-test-shard; x86-main keeps X64 (audit x64-pin-audit-1021: jq-amd64 pin, determinism[X64]). The pool-row gate still pins each runs-on line exactly. Non-blocking: audit says shard arch-neutrality was measured once (2026-09-12) and advisories only by reading, so watch the first aarch64 landings. Quorum receipt w5018-quorum-5871-74f7f06e6c.json (3/3, agy lanes) cited, not re-run. Seat 1 of 2; a second non-author seat is still needed. Not armed.

[github-actions]

§13.11 rung 1 — quorum shadow verdict

S13-SHADOW pr=5871 head=006b0a4f6a83d6fc06f24861c0891432fc23894e verdict=REFUSE class=Q1 arm_rc=1

Shadow mode: this records a verdict and merges nothing. A refusal
to arm is not a block (§13 adds zero rows to §7) — the pull request is
exactly as green as it was.

[noahgift]

EMG-001 sort: returned. ci.yml conflicts with C1; rebuild after #5925 (pace DIRTY-CHECK 12:53Z). Not closed.

[noahgift]

superseded by #5886 (the re-cut of #5871/#5882). Branch kept.