Use prek action with autofix.ci

[adamtheturtle]

Summary

• run the existing lint jobs with j178/prek-action@v3.0.0 and prek 0.4.11
• add a dedicated autofix.ci producer workflow using autofix-ci/action@v1.3.4
• remove legacy pre-commit.ci Lite configuration where present
• let Dependabot update hook revisions through its pre-commit ecosystem

Both actions use exact release tags rather than commit SHAs, following the agreed rollout policy.

Validation

• all changed YAML parses successfully
• actionlint passes for both changed workflows
• zizmor reports no findings for both changed workflows

Part of adamtheturtle/Coding-Project-TODOs#8.

Before merge

• Install the autofix.ci GitHub App for this repository
• Confirm autofix commits are produced on a test pull request
• Remove the pre-commit.ci GitHub App after the replacement is verified

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Note

Medium Risk
Changes how all lint/fix automation runs in CI and introduces autofix commits on main/PRs; misconfiguration could block merges or push unwanted commits until the autofix.ci app is installed and verified.

Overview
Replaces pre-commit.ci Lite with prek in GitHub Actions and adds autofix.ci to push hook-driven fixes back to PRs.

The Lint workflow now runs hooks through j178/prek-action@v3.0.0 (prek 0.4.11) instead of a bash uv run prek step, and drops the pre-commit-ci/lite-action step. A new autofix.ci workflow on main PRs/pushes runs the same prek action at the pre-commit stage with --no-fail-fast, then uploads changes via autofix-ci/action@v1.3.4.

Dependabot gains a pre-commit ecosystem entry for daily hook revision updates. The ci: skip: block is removed from .pre-commit-config.yaml because pre-commit.ci is no longer the remote CI path.

^{Reviewed by Cursor Bugbot for commit 0444aa6. Bugbot is set up for automated code reviews on this repo. Configure here.}