Ln 740 Quality Setup

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ln-740-quality-setup

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

Coordinates code quality tooling configuration for the project.

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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)

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When to Use

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Workflow Overview

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Phase 1: Stack Detection

Detect project technologies to determine which quality tools to configure.

Detection Rules:

Actions:

1. Glob for technology indicators
2. Build technology list
3. Log detected stack to user

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Phase 2: Existing Configuration Check

Before delegating, check what configurations already exist.

Config Files to Check:

Decision Matrix:

Completeness Check (Python): evaluate against ln-741's Completeness Check table (7 aspects: Ruff rules, per-file-ignores, advanced settings, MyPy strict, advanced tools, lint script, editorconfig). If ANY aspect is incomplete, delegate to ln-741 with instruction to EXTEND (not replace).

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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)

Pass detected stack and existing configs to workers via direct Skill tool invocation. For Python: instruct ln-741 to apply full quality stack per its Completeness Check table.

Invocations:

Skill(skill: "ln-741-linter-configurator", args: "{projectPath}")
Skill(skill: "ln-742-precommit-setup", args: "{projectPath}")
Skill(skill: "ln-743-test-infrastructure", args: "{projectPath}")

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Phase 4: Verification

After all workers complete, verify the quality pipeline works.

Verification Steps:

On Failure:

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

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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.

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TodoWrite format (mandatory):

- Invoke ln-741-linter-configurator (pending)
- Invoke ln-742-precommit-setup (pending)
- Invoke ln-743-test-infrastructure (pending)
- Verify quality pipeline (pending)

Worker Invocation (MANDATORY)

All workers: Invoke via Skill tool — workers see coordinator context.

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

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Phase 5: Meta-Analysis

MANDATORY READ: Load shared/​references/​meta_analysis_protocol.md

Skill type: execution-orchestrator. Analyze this session per protocol §7. Output per protocol format.

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Reference Files

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Error Handling

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Version: 3.0.0 Last Updated: 2026-03-18