Label PR body evidence strength

docs/04-nightly-pipeline.md

@@ -227,7 +227,8 @@ gh pr create --base <defaultBranch> --head kaizen/issue-<N>-<slug> \
 codex exec --cd <workspace> "... skills/pr-guardian/SKILL.md ..."
 ```
 
-- PR 本文: 修正サマリ、対象 Issue へのリンク(`Closes #N`)、変更概要、検証結果、verifier 有効時の `verifier: open_pr` / `verifier: open_pr_with_warning`、リスク判定または並列実行で PR になった理由
+- PR 本文: 修正サマリ、対象 Issue へのリンク(`Closes #N`)、変更概要、検証結果、verifier 有効時の `verifier: open_pr` / `verifier: open_pr_with_warning`、証拠強度(`reported` / `executed` / `unverified` / `static`)、リスク判定または並列実行で PR になった理由
+- 証拠強度では、builder-agent の自己申告は `reported`、Kaizen Loop が実行した verify / verifier は `executed`、未設定の verify / verifier は `unverified`、git diff 由来の変更ファイル・行数は `static` として表示する
 - PR 作成直後、Kaizen Loop は Issue に PR リンクと「monitoring CI and review feedback」をコメントする
 - `guardian.mode: sync` では、Kaizen Loop は vendored `skills/pr-guardian/SKILL.md` を設定済みの `guardian.command` で実行する。CI 監視、`gh run watch`、未解決の actionable review feedback 対応、mergeable 判定は `pr-guardian` skill の責務。TypeScript 側は各 pass 後に未解決・非 outdated の review thread を確認し、残っていれば `guardian.maxAttempts` まで再実行する。approval 不足は branch protection が明示要求している場合だけ blocker として扱う
 - `guardian.mode: async` では、PR 作成後に `~/.kaizen/projects/<slug>/guardian/jobs/` へ job を保存して foreground run を終了する。job は repo、PR 番号、URL、branch、base branch、head SHA、retry budget、attempt count、status、last checked time、last blocker を持つ。`kaizen guardian watch` が pending job を再開し、`kaizen guardian run <pr>` は head SHA が変わっていれば新しい job として実行する

src/orchestrator/run.ts

@@ -1072,6 +1072,16 @@ function buildPullRequestBody(
     : '- Verification commands are not configured';
   const notes = agentResult.notes.trim() ? `\n## Builder notes\n${agentResult.notes.trim()}\n` : '';
   const verifier = verifierResult ? `\n## Verifier\nverifier: ${verifierResult.status}\nsummary: ${verifierResult.summary || '(none)'}${verifierResult.reason ? `\nreason: ${verifierResult.reason}` : ''}${verifierResult.notes.trim() ? `\nnotes: ${verifierResult.notes.trim()}` : ''}\n` : '';
+  const evidence = [
+    '- reported: builder summary and builder notes come from the builder-agent self-report.',
+    verifyResults.length > 0
+      ? '- executed: Kaizen Loop ran the verification commands listed above.'
+      : '- unverified: no repository verification commands are configured.',
+    verifierResult
+      ? '- executed: Kaizen Loop ran verifier and recorded the status below.'
+      : '- unverified: verifier was not run for this PR body.',
+    '- static: changed file and line counts come from git diff metadata.'
+  ].join('\n');
   return `Closes #${issue.number}
 
 ## Summary
@@ -1082,6 +1092,9 @@ ${notes}
 ${verify}
 ${verifier}
 
+## Evidence strength
+${evidence}
+
 ## Kaizen risk policy
 ${riskReason}
 

test/integration/dry-run.test.ts

@@ -1800,6 +1800,11 @@ describe('runKaizen PR flow', () => {
     expect(prBodies[0]).toContain('## Verifier');
     expect(prBodies[0]).toContain('verifier: open_pr');
     expect(prBodies[0]).toContain('summary: 確認した');
+    expect(prBodies[0]).toContain('## Evidence strength');
+    expect(prBodies[0]).toContain('reported: builder summary and builder notes come from the builder-agent self-report');
+    expect(prBodies[0]).toContain('executed: Kaizen Loop ran the verification commands listed above');
+    expect(prBodies[0]).toContain('executed: Kaizen Loop ran verifier and recorded the status below');
+    expect(prBodies[0]).toContain('static: changed file and line counts come from git diff metadata');
   });
 
   it('surfaces open_pr_with_warning verifier status in generated PR bodies', async () => {
@@ -1873,6 +1878,10 @@ describe('runKaizen PR flow', () => {
     expect(prBody).toContain('summary: 確認したが注意あり');
     expect(prBody).toContain('reason: low confidence');
     expect(prBody).toContain('notes: human should double-check docs');
+    expect(prBody).toContain('## Evidence strength');
+    expect(prBody).toContain('reported: builder summary and builder notes come from the builder-agent self-report');
+    expect(prBody).toContain('executed: Kaizen Loop ran the verification commands listed above');
+    expect(prBody).toContain('executed: Kaizen Loop ran verifier and recorded the status below');
   });
 
   it('accepts legacy approved verifier payloads as open_pr', async () => {