Create or update sub-module-level CLAUDE.md documentation:

## Layer 4: Sub-Module Level Documentation Requirements

### Content Focus (MUST INCLUDE):
1. **Detailed Implementation Specifics**
   - Specific implementation details and algorithms
   - Code-level patterns and idioms
   - Implementation trade-offs and decisions

2. **Component/Function Documentation**
   - Individual component descriptions
   - Function signatures and behaviors
   - Class/struct/interface documentation

3. **Configuration Details and Examples**
   - Configuration options and parameters
   - Environment-specific settings
   - Configuration examples and templates

4. **Usage Examples and Patterns**
   - Code examples and usage patterns
   - Common use cases and scenarios
   - Integration examples with other components

5. **Performance Considerations**
   - Performance characteristics and constraints
   - Optimization strategies and techniques
   - Resource usage and scalability notes

### Content Restrictions (STRICTLY AVOID):
- Architecture decisions (belong in higher levels)
- Module-level organizational patterns (belong in module-level docs)
- Domain or project overview content (belong in higher levels)
- Cross-module architectural concerns (belong in higher levels)

### Documentation Style:
- Focus on detailed, actionable implementation information
- Provide concrete examples and code snippets
- Document specific behaviors and edge cases
- Include troubleshooting and debugging guidance

### Template Structure:
```markdown
# [Sub-Module/Component Name] - Implementation Guide

## 1. Component Overview
[Specific purpose and functionality]

## 2. Implementation Details
[Detailed implementation specifics]

## 3. API Reference
[Function/method documentation]

## 4. Configuration
[Configuration options and examples]

## 5. Usage Examples
[Code examples and patterns]

## 6. Performance and Optimization
[Performance considerations and tips]

## 7. Troubleshooting
[Common issues and solutions]
```

Remember: This is Layer 4 - focus on concrete, actionable implementation details and avoid architectural or organizational concerns.