error-prone-support

Use this skill when applying Error Prone auto-fixes to the codebase and resolving remaining build warnings. Covers running the self-check script, validating changes, and efficiently batch-fixing warnings.

Use this skill when asked to create or modify an Error Prone `BugChecker`. It covers choosing the right module, implementing the checker and tests, and following the repository validation workflow.

Use this skill after completing implementation to run the full post-implementation validation workflow: structured review, mutation testing, self-check, and full build.

Use this skill when creating, opening, or preparing a pull request in this repository.

Use this skill when asked to create or modify Refaster rules in this repository. It covers choosing the right rule collection, updating test fixtures and registration, and following the repository validation workflow.

Use this skill when reviewing code changes against the project's review checklist. Guides multi-pass structured review with progressive focus areas.

Use this skill when running mutation tests or interpreting mutation test results. Covers running Pitest, interpreting surviving mutants, and documenting unkillable mutations.

Use this skill when upgrading a Maven dependency, GitHub Action, or other versioned dependency in this repository.

Use this skill when writing or suggesting a commit message for changes in this repository.

Use this skill when creating or modifying Markdown documentation, instruction files, or skill files in this repository.

Use this skill when creating or modifying GitHub Actions workflow files in this repository. Covers action pinning, security hardening, permissions, naming, and formatting conventions.

Use this skill when writing or modifying Java code in this repository outside `*/refasterrules/*`. When also creating or modifying `BugChecker`s, use it alongside the `bug-checker` skill.

Use this skill when creating or modifying shell scripts (*.sh) in this repository. Covers shebang, error handling, variable naming, quoting, formatting, and other Bash conventions.