Surgical YAML patches: github-pr.yaml, close-out.yaml, plan-level.yaml + twig sync audit

[PolyphonyRequiem]

Context

Three surgical YAML fixes surfaced during the 2026-05-28 squad fan-out, plus a twig sync audit. Each is self-contained; combined effort is less than a day.

1. github-pr.yaml missing output branch — ado-pr.yaml:139-148 emits merged + pr_url outputs on the already_merged_emitter branch; github-pr.yaml lacks the equivalent, meaning callers get silent nulls when a PR is already merged. Pattern mirror needed at lines 100-107 and 437.

2. close-out.yaml:43 — | json footgun — | json is not a standard Jinja2 filter; it should be | tojson. The current behavior silently produces incorrect output or template error depending on conductor version.

3. plan-level.yaml:163-183 vs root-item-dispatch.yaml:157-161 scope-violation bubble-up — validate_scope_verdict and scope_violation_files are partially bubbled up but the wiring is incomplete relative to the root-item-dispatch consumption side. Complete the bubble-up.

4. Twig sync audit — Audit all twig state callers in .conductor/registry/workflows/ for missing post-state twig sync. Twig state transitions may require a sync call to propagate ADO state to polyphony's local model. File follow-up issues for any callers found missing the sync.

Parent epic: #522 (Squad short-term wins, 2026-05-28 fan-out)

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Acceptance criteria

• github-pr.yaml: already_merged_emitter output branch added (mirroring ado-pr.yaml:139-148), emitting merged + pr_url at lines 100-107 and 437
• close-out.yaml:43: | json replaced with | tojson
• plan-level.yaml:163-183: validate_scope_verdict + scope_violation_files bubble-up complete and consistent with root-item-dispatch.yaml:157-161 consumption
• Twig sync audit completed; any callers missing post-state sync have follow-up issues filed

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Owner

• Primary: Sibelius (twig sync audit — owns twig/ADO seam)
• Secondary: Wagner (YAML patches — owns workflow YAML authoring)

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Estimated effort

2–4 hours (surgical patches + audit)

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File anchors

• .conductor/registry/workflows/github-pr.yaml (lines 100-107, 437)
• .conductor/registry/workflows/ado-pr.yaml (lines 139-148, mirror pattern)
• .conductor/registry/workflows/close-out.yaml (line 43)
• .conductor/registry/workflows/plan-level.yaml (lines 163-183)
• .conductor/registry/workflows/root-item-dispatch.yaml (lines 157-161)

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In-situ clause

Apply DU patterns and hygiene fixes opportunistically where natural in your scope. Don't make these the primary focus.