Merge pull request #220 from QuantStrategyLab/codex/migrate-review-gate-20260710

chore(ci): harden Codex PR review gate

Author: Pigbibi

.github/workflows/codex_pr_review.yml

@@ -1,7 +1,7 @@
 name: Codex PR Review
 
 on:
-  pull_request:
+  pull_request_target:
     types: [opened, synchronize, reopened]
 
 permissions:
@@ -19,10 +19,11 @@ jobs:
     uses: QuantStrategyLab/AIAuditBridge/.github/workflows/codex_pr_review.yml@main
     with:
       caller_concurrency_key: pr-${{ github.event.pull_request.number || github.run_id }}
-      allow_unconfigured_backend: true
+      allow_unconfigured_backend: false
       api_fallback_enabled: "false"
       direct_api_primary_enabled: "false"
-    secrets: inherit
+    secrets:
+      CODEX_AUDIT_SERVICE_URL: ${{ secrets.CODEX_AUDIT_SERVICE_URL }}
     permissions:
       contents: read
       id-token: write

.github/workflows/codex_review_gate.yml

@@ -23,7 +23,7 @@ permissions:
   pull-requests: read
 
 concurrency:
-  group: codex-review-gate-${{ github.event.pull_request.number }}
+  group: codex-review-gate-${{ github.event.pull_request.number }}-${{ github.event_name }}
   cancel-in-progress: true
 
 jobs: