fix(ci): add contents:write permission for GitHub Release creation

.github/workflows/release.yml

@@ -14,6 +14,10 @@ concurrency:
   group: release-${{ github.ref }}
   cancel-in-progress: false
 
+permissions:
+  contents: write
+  packages: write
+
 jobs:
   # ── Run full CI before building release ───────────────────────────────
   ci: