Paths: File paths (shared/, references/, ../ln-*) are relative to skills repo root. If not found at CWD, locate this SKILL.md directory and go up one level for repo root. If shared/ is missing, fetch files via WebFetch from https://raw.githubusercontent.com/levnikolaevich/claude-code-skills/master/skills/{path}.

Documentation Structure Auditor (L3 Worker)

Type: L3 Worker

Specialized worker auditing structural quality of project documentation.

Purpose & Scope

Audit documentation for structural quality across 8 categories
Scan all .md files in project, build hierarchy from AGENTS.md when present
Return structured findings to coordinator with severity, location, recommendations
Calculate compliance score (X/10) for Documentation Structure

Inputs

MANDATORY READ: Load shared/references/audit_worker_core_contract.md, shared/references/docs_quality_contract.md, shared/references/docs_quality_rules.json, and shared/references/markdown_read_protocol.md. MANDATORY READ: Load shared/references/mcp_tool_preferences.md and shared/references/mcp_integration_patterns.md

Receives contextStore with: tech_stack, project_root, output_dir.

hex-line is optional for this doc-only worker. Use it as an accelerator for large markdown outlines and targeted reads when available; otherwise continue with built-in Read/Grep/Glob/Bash.

Workflow

Parse Context: Extract tech stack, project root, output_dir from contextStore
Load Registry if Present: Use docs/project/.context/doc_registry.json as the first routing source when available
Scan Docs: Find all .md files in project (AGENTS.md, CLAUDE.md, README.md, docs/**)
Read Section-First: For larger docs, outline first, then read header markers + Quick Navigation + Agent Entry + Maintenance
Build Tree: Construct hierarchy from AGENTS.md outward links when present, otherwise from CLAUDE.md
Audit Categories 1-7: Run structural checks (see Audit Categories below)
Collect Findings: Record each violation with severity, location (file:line), effort estimate (S/M/L), recommendation
Calculate Score: Count violations by severity, calculate compliance score (X/10)
Write Report: Build full markdown report per shared/templates/audit_worker_report_template.md, write to {output_dir}/611-structure.md in single Write call
Return Summary: Return minimal summary to coordinator (see Output Format)

Audit Categories

#	Category	What to Check
1	Hierarchy & Links	`AGENTS.md` is canonical root when present; all docs reachable via links; no orphaned files; no broken links
2	Single Source of Truth	No content duplication; duplicates replaced with links to source; clear ownership
3	Proactive Compression	Eliminate verbose/redundant content; prose to tables; remove meaningless info; compress even under-limit files; see size_limits.md
4	Requirements Compliance	Correct header markers, correct top sections, within size limits, no illegal code blocks, stack-appropriate doc links
5	Freshness Indicators	Detect staleness signals: dates >6 months in content, unsupported API/tool references, TODO/FIXME markers, placeholder text left in place; deep fact-checking handled by dedicated worker
6	Legacy Cleanup	No history sections; no "was changed" notes; no unsupported info; current state only
7	Stack Adaptation	Links/refs match project stack; no Python examples in .NET project; official docs for correct platform
8	Import Pattern Compliance	When `AGENTS.md` exists at repo root, `CLAUDE.md` must contain exactly one `@AGENTS.md` line and a bounded harness-specific delta (≤50 lines total). Any content in CLAUDE.md that duplicates AGENTS.md is drift. See `shared/references/agent_instructions_writing_guide.md` for rationale

Severity Mapping

Issue Type	Severity
Staleness indicators (old dates, unsupported refs, TODO markers)	MEDIUM
Broken links, orphaned docs	HIGH
Content duplication	MEDIUM
Missing compression opportunity	LOW
Legacy/history content	MEDIUM
Wrong stack references	HIGH
Import pattern drift (duplicated AGENTS.md content in CLAUDE.md, oversized stub, missing `@AGENTS.md` line)	HIGH

Scoring Algorithm

MANDATORY READ: Load shared/references/audit_worker_core_contract.md and shared/references/audit_scoring.md.

Output Format

MANDATORY READ: Load shared/references/audit_worker_core_contract.md and shared/templates/audit_worker_report_template.md.

Write JSON summary per shared/references/audit_summary_contract.md. In managed mode the caller passes both runId and summaryArtifactPath; in standalone mode the worker generates its own run-scoped artifact path per shared contract.

Write report to {output_dir}/611-structure.md with category: "Documentation Structure" and checks: hierarchy_links, ssot, compression, requirements_compliance, freshness_indicators, legacy_cleanup, stack_adaptation, import_pattern_compliance.

Return summary per shared/references/audit_summary_contract.md.

Standalone mode still writes the same JSON summary to a worker-owned run-scoped artifact path per shared contract.

Critical Rules

MANDATORY READ: Load shared/references/audit_worker_core_contract.md.

Do not auto-fix: Report violations only; coordinator aggregates for user
Tech stack aware: Use contextStore tech_stack to apply stack-specific checks (e.g., .NET vs Node.js doc standards)
No deep fact-checking: Detect staleness signals only (dates, unsupported refs, TODO markers)
Compress always: Size limits are upper bounds, not targets. A 100-line file instead of 300 is a win
No code in docs: Documents describe algorithms in tables or ASCII diagrams. Code belongs in codebase
Code is truth: When docs contradict code, report docs as needing update (not code)
Delete, don't archive: Legacy content should be removed, not moved to "archive"
Location precision: Always include file:line for programmatic navigation
Shared contract precedence: Placeholder policy, template-metadata policy, and no-code exceptions come from docs_quality_contract.md / docs_quality_rules.json

Definition of Done