Mirrors the hook + script from `fai/platform`@1ebf893 verbatim
so commits to fai_dart_sdk go through the same gate: secrets,
forbidden filenames, confidentiality references, marketing-
speak, DCO sign-off, Conventional Commits subject, no Claude
co-author trailer.
No `.security-allow` needed here — the SDK has no banned-words
gate or policy doc that mentions the filtered terms verbatim.
A full-history dry-run came back clean.
Activate once per clone with `bash tools/install-hooks.sh`.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
