Update to Matt Skills Curated

{
  "description": "Configure pre-commit quality checks with Husky and lint-staged while preserving package manager conventions. Use when setting up git pre-commit hooks, automated formatters, staged linters, or typecheck gates — even if the user says \"add pre-commit hooks\". Do NOT use for continuous integration (CI) pipeline setup.",
  "included_files": [
    {
      "relative_path": "agents/openai.yaml",
      "size_in_bytes": 99
    }
  ],
  "name": "setup-pre-commit",
  "skill_md_contents": "---\nname: setup-pre-commit\ndescription: \"Configure pre-commit quality checks with Husky and lint-staged while preserving package manager conventions. Use when setting up git pre-commit hooks, automated formatters, staged linters, or typecheck gates — even if the user says \\\"add pre-commit hooks\\\". Do NOT use for continuous integration (CI) pipeline setup.\"\n---\n\n# Setup Pre-Commit Hooks\n\nInstall and configure deterministic Git pre-commit quality gates using Husky, `lint-staged`, and Prettier, preserving existing repository package managers and build scripts.\n\n---\n\n## Core Invariants\n\n1. **Package Manager Fidelity**: Detect and use the repository's native package manager (`bun`, `pnpm`, `yarn`, `npm`); do NOT introduce conflicting lockfiles.\n2. **Staged-Only Formatting**: Run Prettier strictly against staged files via `lint-staged` with `--ignore-unknown --write` to prevent un-staged code drift.\n3. **Repository-Wide Typecheck & Test**: Execute full typecheck and unit test passes inside `.husky/pre-commit` after `lint-staged` succeeds.\n4. **Preserve Existing Configurations**: If `.prettierrc` or existing Husky hooks exist, merge scripts safely without overwriting user rules.\n5. **Mandatory Smoke-Test Commit**: Verify the entire hook pipeline by staging all configuration changes and executing a verified test commit.\n\n---\n\n## Architecture & Map of Content (MOC)\n\n```\n[ Git Commit Attempt ] ──► [ .husky/pre-commit Hook ]\n                                     │\n         ┌───────────────────────────┼───────────────────────────┐\n         ▼                           ▼                           ▼\n  [ lint-staged ]             [ Typecheck Gate ]          [ Unit Test Gate ]\n  - Prettier format           - `npm run typecheck`       - `npm run test`\n  - Staged files only         - Full project types        - Unit/Integration pass\n```\n\n| Component | Responsibility | Configuration File |\n|---|---|---|\n| **Husky Engine** | Git hook manager v9+ | `.husky/pre-commit` |\n| **lint-staged** | Run formatters exclusively on staged changes | `.lintstagedrc` |\n| **Prettier** | Code style standardization | `.prettierrc` |\n\n---\n\n## Step-by-Step Procedure (TWI)\n\n### Step 1: Detect Package Manager & Check Existing Setup\n- **Action**: Detect the lockfile (`bun.lockb` $\\rightarrow$ bun, `pnpm-lock.yaml` $\\rightarrow$ pnpm, `yarn.lock` $\\rightarrow$ yarn, else npm).\n- **Key Point**: Check if `prettier`, `lint-staged`, or `husky` are already installed.\n- **Why**: Reusing existing dependencies prevents package bloat and lockfile churn.\n\n### Step 2: Install DevDependencies & Initialize Husky\n- **Action**: Install `husky`, `lint-staged`, and `prettier` as devDependencies, then run `npx husky init`.\n- **Key Point**: Verify that `\"prepare\": \"husky\"` is added to `package.json`.\n- **Inline Checklist**:\n  - [ ] Dependencies installed in `devDependencies`\n  - [ ] `.husky/` directory created\n  - [ ] `prepare` script present in `package.json`\n\n### Step 3: Write `.husky/pre-commit` & `.lintstagedrc`\n- **Action**: Configure `.husky/pre-commit`:\n  ```bash\n  npx lint-staged\n  npm run typecheck\n  npm run test\n  ```\n  *(Adapting `npm` to the detected package manager, and omitting `typecheck`/`test` if scripts are absent).*\n- **Key Point**: Create `.lintstagedrc` with `{\"*\": \"prettier --ignore-unknown --write\"}`.\n- **Why**: `prettier --ignore-unknown` safely ignores binaries and images while formatting all supported text formats.\n\n### Step 4: Smoke Test and Initial Commit\n- **Action**: Stage all created hook files and run `git commit -m \"Add pre-commit hooks (husky + lint-staged + prettier)\"`.\n- **Key Point**: Confirm that the commit triggers the pre-commit hook and passes all stages.\n- **Why**: Live commit execution proves that hooks are executable and correctly configured.\n\n---\n\n## Anti-Rationalization Guardrails\n\n| Tempting Rationalization | Binding Rule | Engineering Rationale |\n|---|---|---|\n| *\"Run prettier across the whole repository on every commit.\"* | **Run Prettier strictly on staged files via `lint-staged`.** | Full-repo formatting on every commit slows developer workflows and pollutes diffs. |\n| *\"Skip the typecheck and test steps in pre-commit to make it faster.\"* | **Include typecheck and fast tests in pre-commit.** | Catching type errors locally before push prevents broken remote CI builds. |\n| *\"Use npm commands in a pnpm or bun repository.\"* | **Strictly match detected package manager commands.** | Mismatched package managers create duplicate lockfiles and broken installations. |\n\n"
}