fix(ci): limit prepared release permissions

.github/workflows/release.yml

@@ -85,6 +85,8 @@ jobs:
   verify-prepared-release:
     needs: [preflight, prepare-release]
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       - name: Checkout prepared release commit
         uses: actions/checkout@v7

scripts/release-local-gate.mjs

@@ -66,7 +66,7 @@ export function parseRemoteMain(text) {
 }
 
 export function validateReleaseWorkflowContract(text) {
-    const workflow = String(text);
+    const workflow = String(text).replace(/\r\n/gu, '\n');
     const image = 'ghcr.io/shik3i/koalasync';
     if (!workflow.includes(`IMAGE: ${image}`)) {
         throw new Error(`release workflow must define the lowercase canonical image ${image}`);
@@ -97,6 +97,16 @@ export function validateReleaseWorkflowContract(text) {
     if (/git push origin HEAD:main\s*(?:\|\||;\s*true)/u.test(workflow)) {
         throw new Error('release workflow must stop when the automatic main push fails');
     }
+    const verificationPermissions = [
+        '  verify-prepared-release:',
+        '    needs: [preflight, prepare-release]',
+        '    runs-on: ubuntu-latest',
+        '    permissions:',
+        '      contents: read'
+    ].join('\n');
+    if (!workflow.includes(verificationPermissions)) {
+        throw new Error('prepared release verification must explicitly limit GITHUB_TOKEN to contents: read');
+    }
     return image;
 }
 

scripts/release-local-gate.test.mjs

@@ -40,6 +40,11 @@ describe('local release gate contract', () => {
             'node scripts/release-preflight.mjs --sources "$VERSION"',
             'git commit -m "chore(release): update versions to v$VERSION [skip ci]"',
             'git push origin HEAD:main',
+            '  verify-prepared-release:',
+            '    needs: [preflight, prepare-release]',
+            '    runs-on: ubuntu-latest',
+            '    permissions:',
+            '      contents: read',
             'ref: ${{ needs.prepare-release.outputs.prepared-commit }}',
             'ref: ${{ needs.prepare-release.outputs.prepared-commit }}',
             'ref: ${{ needs.prepare-release.outputs.prepared-commit }}',
@@ -66,6 +71,10 @@ describe('local release gate contract', () => {
             'git push origin HEAD:main',
             'git push origin HEAD:main || true'
         ))).toThrow('stop when the automatic main push fails');
+        expect(() => validateReleaseWorkflowContract(workflow.replace(
+            /    permissions:\r?\n      contents: read\r?\n    steps:/u,
+            '    steps:'
+        ))).toThrow('explicitly limit GITHUB_TOKEN');
     });
 
     it('runs the complete CI-equivalent dependency, verify, and browser sequence', () => {