Type: L2 Domain Coordinator Category: 7XX Project Bootstrap Parent: ln-700-project-bootstrap

Coordinates code quality tooling configuration for the project.

Purpose & Scope

Does:

Detects project technology stack (TypeScript/React, .NET, Python)
Checks for existing quality configurations
Delegates to specialized workers for each quality aspect
Verifies final configuration works correctly

Does NOT:

Generate configuration files directly (workers do this)
Modify source code
Run in isolation (requires ln-720 structure first)

When to Use

| After ln-720-structure-migrator completes | Automatic delegation from ln-700

| Manual quality setup needed | Invoke directly with project path

| Existing project needs quality tools | Run with existing config detection

Workflow Overview

| 1 | Stack Detection | Identified technologies

| 2 | Existing Config Check | Skip/merge/replace decisions

| 3 | Parallel Delegation | Worker invocations

| 4 | Verification | Working quality pipeline

Phase 1: Stack Detection

Detect project technologies to determine which quality tools to configure.

Detection Rules:

| package.json + tsconfig.json | TypeScript/React | ESLint + Prettier

| *.csproj or *.sln | .NET | editorconfig + Roslyn

| pyproject.toml or requirements.txt | Python | Ruff

| Multiple detected | Mixed | Configure all detected

Actions:

Glob for technology indicators
Build technology list
Log detected stack to user

Phase 2: Existing Configuration Check

Before delegating, check what configurations already exist.

Config Files to Check:

| TypeScript | eslint.config.*, .prettierrc*, tsconfig.json

| .NET | .editorconfig, Directory.Build.props

| Python | ruff.toml, pyproject.toml [tool.ruff]

| Pre-commit | .husky/, .pre-commit-config.yaml

| Tests | vitest.config.*, pytest.ini, *.Tests.csproj

Decision Matrix:

| None found | Create new | No

| Partial found | Merge (add missing) | Ask user

| Complete found | Skip | Inform user

| User requests replace | Backup + replace | Yes

Phase 3: Parallel Delegation

Invoke workers for each quality aspect. Workers can run in parallel as they configure independent tools.

Delegation Order:

ln-740 (this)
    |
    +---> ln-741-linter-configurator
    |         - ESLint/Prettier (TypeScript)
    |         - editorconfig/Roslyn (.NET)
    |         - Ruff (Python)
    |
    +---> ln-742-precommit-setup
    |         - Husky + lint-staged (Node.js)
    |         - pre-commit framework (Python)
    |         - commitlint
    |
    +---> ln-743-test-infrastructure
              - Vitest (TypeScript)
              - xUnit (.NET)
              - pytest (Python)

Worker Invocation:

Skill tool: ln-741-linter-configurator
Args: detected stack, existing config decisions

Skill tool: ln-742-precommit-setup
Args: detected stack, lint commands from ln-741

Skill tool: ln-743-test-infrastructure
Args: detected stack, project structure

Phase 4: Verification

After all workers complete, verify the quality pipeline works.

Verification Steps:

| Lint runs | npm run lint / ruff check . / dotnet format --verify-no-changes | No errors

| Format runs | npm run format:check / ruff format --check | No changes needed

| Tests run | npm test / pytest / dotnet test | Sample tests pass

| Hooks work | Create test commit | Hooks trigger

On Failure:

Log specific failure
Suggest fix or re-run specific worker
Do NOT mark as complete until verification passes

Critical Rules

RULE 1: Never overwrite existing user configurations without explicit confirmation.

RULE 2: Workers run AFTER stack detection - do not invoke workers without knowing the stack.

RULE 3: Verification phase is MANDATORY - quality setup is not complete until tools run successfully.

RULE 4: eslint-config-prettier is REQUIRED when both ESLint and Prettier are configured.

Definition of Done

All detected technology stacks have appropriate quality tools Existing configurations preserved or backed up Lint command runs without errors Format command runs without errors Test command runs and sample tests pass Pre-commit hooks trigger on test commit User informed of all installed tools and commands

Reference Files

| stack_detection.md | Detailed detection rules

| verification_checklist.md | Full verification checklist

Error Handling

| No stack detected | Empty project | Ask user for intended stack

| Worker failed | Missing dependencies | Install prerequisites, retry

| Verification failed | Config error | Check specific tool output, fix

| Hooks not working | Git not initialized | Run git init first

Version: 2.0.0 Last Updated: 2026-01-10

ln-740-quality-setup

安装