documentation-audit

What this skill does

<!-- ABOUTME: Documentation audit skill for verifying claims against codebase -->
<!-- ABOUTME: Uses two-pass extraction with pattern expansion for comprehensive detection -->

# Documentation Audit

Systematically verify claims in documentation against the actual codebase using a two-pass approach.

## Overview

**Core principle:** Low recall is worse than false positives—missed claims stay invisible.

**Two-pass process:**
1. **Pass 1:** Extract and verify claims directly from docs
2. **Pass 2A:** Expand patterns from false claims to find similar issues
3. **Pass 2B:** Compare codebase inventory vs documented items (gap detection)

## Quick Start

1. Identify target docs (user-facing only, skip `plans/`, `audits/`)
2. Note current git commit for report header
3. Run Pass 1 extraction using parallel agents (one per doc)
4. Analyze false claims for patterns
5. Run Pass 2 expansion searches
6. Generate `docs/audits/AUDIT_REPORT_YYYY-MM-DD.md`

## Claim Types

| Type | Example | Verification |
|------|---------|--------------|
| `file_ref` | `scripts/foo.py` | File exists? |
| `config_default` | "defaults to 'AI Radio'" | Check schema/code |
| `env_var` | `STATION_NAME` | In .env.example + code? |
| `cli_command` | `--normalize` flag | Script supports it? |
| `behavior` | "runs every 2 minutes" | Check timers/code |

**Verification confidence:**
- **Tier 1 (auto):** file_ref, config_default, env_var, cli_command
- **Tier 2 (semi-auto):** symbol_ref, version_req
- **Tier 3 (human review):** behavior, constraint

## Pass 2 Pattern Expansion

After Pass 1, analyze false claims and search for similar patterns:

```
Dead script found: diagnose_track_selection.py
  → Search: all script references → Found 8 more dead scripts

Wrong interval: "every 10 seconds"
  → Search: "every \d+ (seconds?|minutes?)" → Found 3 more

Wrong service name: ai-radio-break-gen.service
  → Search: service/timer names → Found naming inconsistencies
```

**Common patterns to always check:**
- Dead scripts: `scripts/*.py` references
- Timer intervals: `every \d+ (seconds?|minutes?)`
- Service names: `ai-radio-*.service`, `*.timer`
- Config vars: `RADIO_*` environment variables
- CLI flags: `--flag` patterns in bash blocks

## Output Format

Generate `docs/audits/AUDIT_REPORT_YYYY-MM-DD.md`:

```markdown
# Documentation Audit Report
Generated: YYYY-MM-DD | Commit: abc123

## Executive Summary
| Metric | Count |
|--------|-------|
| Documents scanned | 12 |
| Claims verified | ~180 |
| Verified TRUE | ~145 (81%) |
| **Verified FALSE** | **31 (17%)** |

## False Claims Requiring Fixes
### CONFIGURATION.md
| Line | Claim | Reality | Fix |
|------|-------|---------|-----|
| 135 | `claude-sonnet-4-5` | Actual: `claude-3-5-sonnet-latest` | Update |

## Pattern Summary
| Pattern | Count | Root Cause |
|---------|-------|------------|
| Dead scripts | 9 | Scripts deleted, docs not updated |

## Human Review Queue
- [ ] Line 436: behavior claim needs verification
```

## Detailed References

For execution checklist and anti-patterns: [checklist.md](checklist.md)
For claim extraction patterns: [extraction-patterns.md](extraction-patterns.md)