Feature Documentation Generation & Verification

<!-- SYNC: Source of truth is docs/​templates/​skills/​feature-docs/​SKILL.md --> <!-- Keep in sync with .github/​skills/​feature-docs/​SKILL.md -->

Feature Documentation Generation & Verification

Generate comprehensive feature documentation following the GOLD STANDARD template pattern.

GOLD STANDARD Reference: docs/​features/​README.ExampleFeature1.md (Example App) Template File: docs/​templates/​detailed-feature-docs-template.md

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MANDATORY 26-SECTION STRUCTURE

All feature documentation MUST follow this section order:

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Phase 1: Feature Analysis

Build knowledge model in .ai/​workspace/​analysis/[feature-name].md.

Discovery Areas

1. Domain Entity Discovery: Entities, value objects, enums
2. Workflow Discovery: Commands, Queries, Event Handlers, Background Jobs
3. API Discovery: Controllers, endpoints, DTOs
4. Frontend Discovery: Components, Services, Stores
5. Cross-Service Discovery: Message Bus messages, producers, consumers

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Phase 2: Documentation Generation

Generate at docs/​business-features/​{Module}/​detailed-features/​README.{FeatureName}.md.

Key Format Examples

Business Requirements (FR-XX):

#### FR-{MOD}-01: {Requirement Title}

| Aspect          | Details                                 |
| --------------- | --------------------------------------- |
| **Description** | {What this requirement enables}         |
| **Scope**       | {Who can use / affected entities}       |
| **Evidence**    | `{FilePath}:{LineRange}`                |

User Stories (US-XX):

#### US-{MOD}-01: {Story Title}

**As a** {role}
**I want** {goal/​desire}
**So that** {benefit/​value}

**Acceptance Criteria**:
- [ ] AC-01: {Criterion with evidence reference}
- [ ] AC-02: {Criterion with evidence reference}

**Related Requirements**: FR-{MOD}-01, FR-{MOD}-02
**Evidence**: `{FilePath}:{LineRange}`

Test Summary Table (MANDATORY):

| Category               | P0 (Critical) | P1 (High) | P2 (Medium) | P3 (Low) | Total |
| ---------------------- | :-----------: | :-------: | :---------: | :------: | :---: |
| {Category1}            | {N}           | {N}       | {N}         | {N}      | {N}   |
| **Total**              | **{N}**       | **{N}**   | **{N}**     | **{N}**  | **{N}**|

Test Case Format (TC-XX):

#### TC-{MOD}-001: {Test Name} [P0]

**Acceptance Criteria**:
- ✅ {Passing criteria 1}
- ✅ {Passing criteria 2}

**GIVEN** {initial context}
**WHEN** {action performed}
**THEN** {expected outcome}

**Edge Cases**:
- ❌ {Invalid scenario} → {Expected error/​behavior}

**Evidence**: `{FilePath}:{LineRange}`

Troubleshooting Format:

#### {Issue Title}

**Symptoms**: {Observable problem}

**Causes**:
1. {Cause 1}
2. {Cause 2}

**Resolution**:
- {Step 1}
- {Step 2}

Permission Matrix:

| Role | View | Create | Edit | Delete | Special |
|------|:----:|:------:|:----:|:------:|---------|
| Admin | ✅ | ✅ | ✅ | ✅ | Full access |

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Phase 2.5: AI Companion Generation

Generate AI-agent optimized companion file alongside the comprehensive documentation.

Output: docs/​business-features/​{Module}/​detailed-features/​README.{FeatureName}.ai.md Template: docs/​templates/​detailed-feature-docs-template.ai.md

AI Companion Structure (10 Sections, ~260 lines)

Compression Rules

1. Tables over prose - Convert paragraphs to table rows
2. Paths over descriptions - File:Line over "located in..."
3. Signatures over examples - { id: string } → { entity: Dto } over full code
4. Decisions over explanations - What to do, not why

AI Companion Quality Check

• File size ≤300 lines
• All file paths are exact and current
• API contracts include request/​response shapes
• Business rules have evidence references
• Patterns section has ✅/❌ markers
• Evidence chain preserved from full doc

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Phase 3: Verification (2-Pass System)

First Pass

For EACH code reference:

• Read actual source file at referenced lines
• Compare character-by-character
• Verify line numbers are accurate
• Log mismatches and correct immediately

Second Pass

• Random sampling (10 code references)
• Cross-reference and TOC verification
• Completeness check

CRITICAL: If Second Pass finds MORE THAN 5 issues, HALT and re-run Phase 3.

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Anti-Hallucination Protocols

EVIDENCE_CHAIN_VALIDATION

Before claiming any relationship:

• "I believe X calls Y because..." → show actual code
• "This follows pattern Z because..." → cite specific examples

DOCUMENTATION_ACCURACY_CHECKPOINT

Before writing any documentation:

• "Have I read the actual code that implements this?"
• "Are my line number references accurate and current?"
• "Can I provide a code snippet as evidence?"

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Evidence Verification Protocol (QC)

Verification Summary Table

| Category | Total Claims | Verified | Stale | Missing | Last Verified |
|----------|-------------|----------|-------|---------|---------------|
| Business Requirements | {N} | {N} | {N} | {N} | {Date} |
| Test Specifications | {N} | {N} | {N} | {N} | {Date} |
| **Total** | **{N}** | **{N}** | **{N}** | **{N}** | |

Status Markers

• ✅ Verified - Line numbers match actual source
• ⚠️ Stale - Line numbers shifted, content still exists
• ❌ Missing - Referenced code no longer exists

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Quality Checklist

• All 26 mandatory sections present in correct order
• Quick Navigation by Role included
• Executive Summary with key capabilities
• Business Value with ROI analysis
• User Stories with acceptance criteria (US-XX format)
• Business Requirements use FR-{MOD}-XX format
• Business Rules with state transitions
• Process Flows with diagrams
• System Design with technical decisions log
• Security Architecture with authorization matrix
• Performance Considerations with targets
• Implementation Guide with code examples
• Test Summary table with P0-P3 counts
• Test Data Requirements and fixtures
• Edge Cases Catalog (validation, business, concurrency)
• Regression Impact analysis
• Test cases use TC-{MOD}-XXX format with GIVEN/​WHEN/​THEN
• Acceptance criteria use ✅/❌ markers
• Troubleshooting uses Symptoms/​Causes/​Resolution format
• Operational Runbook with deployment checklist
• Roadmap and Dependencies
• Evidence Verification Protocol with audit trail
• Glossary for non-technical stakeholders
• Version History table at end
• All code references verified with actual files

AI Companion Checklist

• AI companion file created at README.{FeatureName}.ai.md
• AI companion ≤300 lines
• File locations section complete with exact paths
• API contracts include request/​response shapes
• All evidence references preserved from full doc
• Patterns section has required (✅) and anti-patterns (❌)