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infra: add cargo-fmt-check pre-push prek hook (mirror CI)
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The cargo-fmt failure on this PR slipped to CI because the pre-commit
prek hooks were never installed in the working clone. The existing
cargo-fmt hook reformats in place but only when it runs. Add a
pre-push cargo-fmt-check hook (`cargo fmt --all --check`) that mirrors
CI's Dagger `check` step exactly, so an unformatted commit is blocked
locally before it can reach the runner — even if the pre-commit hook was
skipped or not installed. Filtered to .rs pushes so Rust-free pushes pay
nothing.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erich Blume 2026-06-04 12:36:12 -07:00
commit 7f48a2a1c5
2 changed files with 17 additions and 0 deletions
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Added a `cargo-fmt-check` pre-push prek hook that runs `cargo fmt --all --check` (mirroring CI's Dagger `check` step) whenever a push touches a `.rs` file. The pre-commit `cargo-fmt` hook reformats in place, but only fires when installed and run; the pre-push check is a last-line guard so an unformatted commit can't reach the runner. Run `prek install --hook-type pre-push` to activate it.