{
  "item_type": "chapter",
  "chapter_id": "design-patterns",
  "chapter_title": "Design Pattern Detection",
  "chapter_file": "book/src/design-patterns.md",
  "drift_detected": false,
  "severity": "low",
  "quality_assessment": "Documentation is accurate and comprehensive. All 8 design patterns are documented (7 user-facing + Builder as internal with god object detection context). The validation requirement appears to count Builder as the 8th pattern. CLI flags exist in codebase (src/cli/args.rs:268-277) and are documented as 'defined but not yet fully integrated', which matches the actual implementation status. Internal links are valid.",
  "issues": [
    {
      "type": "clarification_needed",
      "severity": "low",
      "section": "Overview",
      "description": "The validation requirement mentions '8 design patterns' while the overview table lists 7. This is technically correct if counting Builder pattern (documented in Internal Pattern Detection section) as the 8th, but could be clearer.",
      "current_content": "Debtmap detects 7 design patterns across Python, JavaScript, TypeScript, and Rust",
      "should_be": "Could clarify: 'Debtmap detects 7 user-facing design patterns (plus Builder and Visitor used internally for scoring adjustments)'",
      "fix_suggestion": "Minor wording improvement for clarity - the pattern count is correct when including internal patterns"
    },
    {
      "type": "documentation_accuracy",
      "severity": "info",
      "section": "Configuration - CLI Options",
      "description": "Documentation accurately states CLI flags are 'Defined but Not Yet Active'. Verified: CLI args ARE defined in src/cli/args.rs:268-277 and passed through config builder (src/cli/config_builder.rs:151-153, 379-398).",
      "current_content": "CLI flags defined but not yet fully integrated",
      "should_be": "This is accurate - no change needed",
      "fix_suggestion": "Documentation correctly reflects implementation status. When CLI integration is completed, update the status markers."
    }
  ],
  "positive_aspects": [
    "Comprehensive coverage of all documented patterns (7 user-facing + 2 internal-only)",
    "Clear detection criteria for each pattern with Python and Rust examples",
    "Accurate confidence scoring documentation (0.0-1.0 scale with holistic assessment)",
    "Excellent distinction between user-facing patterns and internal-only patterns (Builder, Visitor)",
    "CLI flags documented as 'defined but not yet active' which matches codebase reality",
    "Cross-file pattern detection well documented with import tracking explanation",
    "Rust-specific trait-based pattern detection covered thoroughly",
    "Integration with complexity analysis explained with clear separation of systems",
    "Practical examples showing real-world pattern usage",
    "Best practices section with actionable recommendations",
    "All internal links verified valid (complexity-metrics.md in analysis-guide/, scoring-strategies.md)",
    "Troubleshooting section addresses realistic issues with accurate file references",
    "Source references point to correct files (src/organization/builder_pattern.rs, src/complexity/visitor_detector.rs)"
  ],
  "improvement_suggestions": [
    "Consider adding a status indicator table showing: Pattern | Status (Implemented/Planned) | User-Facing (Yes/No)",
    "Could add a brief note about when pattern output integration is expected to be completed",
    "The Internal Pattern Detection section is well-placed - could add a link to it from the Overview for discoverability"
  ],
  "metadata": {
    "analyzed_at": "2025-12-27T08:35:00Z",
    "feature_inventory": ".prodigy/book-analysis/features.json",
    "topics_covered": [
      "Observer pattern detection",
      "Singleton pattern detection",
      "Factory pattern detection",
      "Strategy pattern detection",
      "Callback pattern detection",
      "Template method pattern detection",
      "Dependency injection detection",
      "Builder pattern detection (internal)",
      "Visitor pattern detection (internal)",
      "Pattern confidence thresholds",
      "Configuration options",
      "Cross-file pattern detection",
      "Rust trait-based patterns"
    ],
    "validation_focus": "Check that all 8 design patterns are documented with detection criteria and examples",
    "validation_result": "PASSED - All 8 patterns documented: 7 user-facing (Observer, Singleton, Factory, Strategy, Callback, Template Method, Dependency Injection) + Builder (internal, for god object detection adjustment). Visitor pattern also documented as internal-only for complexity scaling.",
    "source_files_verified": [
      "src/analysis/patterns/mod.rs - PatternDetector with 7 recognizers (line 91-100)",
      "src/analysis/patterns/observer.rs - Observer pattern detection",
      "src/analysis/patterns/factory.rs - Factory pattern detection",
      "src/analysis/patterns/singleton.rs - Singleton pattern detection",
      "src/analysis/patterns/strategy.rs - Strategy pattern detection",
      "src/analysis/patterns/callback.rs - Callback pattern detection",
      "src/analysis/patterns/template_method.rs - Template method detection",
      "src/analysis/patterns/dependency_injection.rs - DI pattern detection",
      "src/organization/builder_pattern.rs - Builder pattern for god object adjustment (line 1-671)",
      "src/complexity/visitor_detector.rs - Visitor pattern for complexity scaling (line 1-495)",
      "src/cli/args.rs - CLI flags defined at lines 268-277",
      "src/cli/config_builder.rs - Config fields at lines 151-153, 379-398"
    ],
    "cli_flags_status": {
      "no_pattern_detection": "DEFINED in src/cli/args.rs:269-270",
      "patterns": "DEFINED in src/cli/args.rs:272-274",
      "pattern_threshold": "DEFINED in src/cli/args.rs:276-277 (default 0.7)",
      "show_pattern_warnings": "DEFINED in src/cli/config_builder.rs:313",
      "integration_status": "Flags are plumbed through config builder but effect on pattern output may be pending"
    },
    "internal_links_validated": {
      "total": 2,
      "valid": 2,
      "broken": 0,
      "links": [
        {
          "target": "./analysis-guide/complexity-metrics.md",
          "resolved_to": "book/src/analysis-guide/complexity-metrics.md",
          "exists": true
        },
        {
          "target": "./scoring-strategies.md",
          "resolved_to": "book/src/scoring-strategies.md",
          "exists": true
        }
      ]
    },
    "pattern_count_verification": {
      "user_facing_patterns": 7,
      "internal_only_patterns": 2,
      "documented_in_chapter": 9,
      "validation_requirement": 8,
      "status": "PASSED - Builder pattern counts as 8th when including internal patterns with user documentation"
    }
  }
}
