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- Restrict invoke and review triggers purely to explicit user comments. - Enforce strict author association verification (OWNER, MEMBER, COLLABORATOR). - Enforce strict targeting assertion to ensure pull requests act on the main branch. - Synchronize prompt constraints and GitHub action tools with the community catalog. - Refine action API key options to uniformly target secrets.GOOGLE_API_KEY. Co-authored-by: Shangjie Chen <deanchen@google.com> PiperOrigin-RevId: 915654346