Matrix lint workflow by hook stage

[adamtheturtle]

Refactor the lint workflow to parallelize hook stage execution by adding hook-stage to the build matrix. This runs all three hook stages (pre-commit, pre-push, manual) in parallel instead of sequentially.

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Note

Low Risk
Workflow-only refactor that changes CI job fan-out and log grouping but not the lint commands themselves; primary risk is increased CI load or matrix misconfiguration.

Overview
Parallelizes CI linting by hook stage. The lint.yml workflow adds hook-stage (pre-commit, pre-push, manual) to the build matrix so each stage runs as its own matrix job across both Ubuntu and Windows.

The Lint step is simplified from three sequential prek run invocations to a single command parameterized by ${{ matrix.hook-stage }}, improving visibility and reducing total wall-clock time.

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Lite-action in matrix jobs pushes incomplete auto-fixes

Medium Severity

Adding hook-stage to the matrix means pre-commit-ci/lite-action now runs in 6 parallel jobs, each containing auto-fixes from only a single hook stage. Previously, each job ran all three stages sequentially, so the action had the complete set of fixes. The pre-commit-ci/lite-action documentation requires it to be in a job that is "either by itself in the workflow or is the last job to finish," which 6 parallel matrix jobs violate. Only the last job's partial fixes will be pushed, losing fixes from the other two stages.

Additional Locations (1)

• .github/workflows/lint.yml#L45-L47