# Ln 640 Pattern Evolution Auditor

> Use when auditing architectural patterns through the evaluation platform with mandatory best-practice research, coordinated pattern workers, and structured summaries.

- Skill: `majiayu000/ln-640-pattern-evolution-auditor-5` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/ln-640-pattern-evolution-auditor-5`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/ln-640-pattern-evolution-auditor-5/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Research & Search
- License: MIT
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/ln-640-pattern-evolution-auditor-5

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> **Paths:** File paths (`shared/`, `references/`, `../ln-*`) are relative to skills repo root.

**Type:** L2 Coordinator
**Category:** 6XX Audit

# Pattern Evolution Auditor

## Mandatory Read

**MANDATORY READ:** Load `shared/references/evaluation_coordinator_runtime_contract.md`, `shared/references/evaluation_summary_contract.md`, `shared/references/evaluation_research_contract.md`
**MANDATORY READ:** Load `shared/references/research_tool_fallback.md`

## Purpose

- audit implemented architectural patterns against current best practices
- coordinate `ln-641` through `ln-647`
- require research before pattern scoring

## Runtime Contract

Runtime family:
- `evaluation-runtime`

Identifier:
- `pattern-audit`

Phase order:
1. `PHASE_0_CONFIG`
2. `PHASE_1_DISCOVERY`
3. `PHASE_2_RESEARCH`
4. `PHASE_3_BOUNDARY_AUDITS`
5. `PHASE_4_PATTERN_ANALYSIS`
6. `PHASE_5_AGGREGATE`
7. `PHASE_6_REPORT`
8. `PHASE_7_SELF_CHECK`

## Worker Set

- `ln-641-pattern-analyzer`
- `ln-642-layer-boundary-auditor`
- `ln-643-api-contract-auditor`
- `ln-644-dependency-graph-auditor`
- `ln-645-open-source-replacer`
- `ln-646-project-structure-auditor`
- `ln-647-env-config-auditor`

## Worker Invocation (MANDATORY)

Use the Skill tool for delegated workers. Do not inline worker logic inside the coordinator.

TodoWrite format (mandatory):
- `Resolve audit scope and build manifest`
- `Load architecture patterns and layers`
- `Run best-practice research`
- `Run boundary and contract audits`
- `Analyze pattern compliance and gaps`
- `Aggregate worker findings`
- `Generate audit report`
- `Verify cleanup and self-check`

Representative invocations:

```text
Skill(skill: "ln-641-pattern-analyzer", args: "{scope}")
Skill(skill: "ln-642-layer-boundary-auditor", args: "{scope}")
Skill(skill: "ln-643-api-contract-auditor", args: "{scope}")
Skill(skill: "ln-644-dependency-graph-auditor", args: "{scope}")
Skill(skill: "ln-645-open-source-replacer", args: "{scope}")
Skill(skill: "ln-646-project-structure-auditor", args: "{scope}")
Skill(skill: "ln-647-env-config-auditor", args: "{scope}")
```

## Workflow

1. Start `evaluation-runtime`.
2. Discover candidate patterns and applicability.
3. Run mandatory research first:
   - official docs or standards
   - MCP Ref
   - Context7 when library/framework patterns are involved
   - current web best-practice research
4. Run boundary audits before pattern scoring.
5. Run pattern analysis only after boundary results and research exist.
6. Aggregate scores and produce the final pattern report.

## Definition of Done

- [ ] Evaluation runtime started
- [ ] Pattern applicability resolved
- [ ] Best-practice research completed
- [ ] Boundary audit summaries recorded
- [ ] Pattern analysis summaries recorded
- [ ] Final report written
- [ ] `evaluation-coordinator` summary written
- [ ] Runtime completed

## Meta-Analysis

**MANDATORY READ:** Load `shared/references/meta_analysis_protocol.md`

After the coordinator run, analyze the session per protocol section 7 and include the protocol-formatted output with the final pattern audit result.

## References

- Workers: `../ln-641-pattern-analyzer/SKILL.md`, `../ln-642-layer-boundary-auditor/SKILL.md`, `../ln-643-api-contract-auditor/SKILL.md`, `../ln-644-dependency-graph-auditor/SKILL.md`, `../ln-645-open-source-replacer/SKILL.md`, `../ln-646-project-structure-auditor/SKILL.md`, `../ln-647-env-config-auditor/SKILL.md`
- Shared pattern refs: `references/layer_rules.md`, `references/pattern_library.md`, `references/scoring_rules.md`

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**Version:** 2.0.0
**Last Updated:** 2026-02-08