{
  "item_type": "chapter",
  "chapter_id": "architectural-analysis",
  "chapter_title": "Architectural Analysis",
  "chapter_file": "book/src/architectural-analysis.md",
  "drift_detected": true,
  "severity": "medium",
  "quality_assessment": "Chapter is comprehensive and well-structured with accurate explanations of architectural concepts. A few source code references and algorithm details need updates to match current implementation.",
  "issues": [
    {
      "type": "incorrect_information",
      "severity": "medium",
      "section": "Code Duplication Detection",
      "description": "Documentation states SHA-256 is used for hash calculation, but implementation uses xxHash64 for performance",
      "current_content": "Calculate hash - Compute SHA-256 hash for each normalized chunk",
      "should_be": "Calculate hash - Compute xxHash64 hash for each normalized chunk",
      "fix_suggestion": "Update algorithm description to reference xxHash64 instead of SHA-256. The implementation at src/debt/duplication.rs:75-77 uses xxh64().",
      "source_reference": "src/debt/duplication.rs:71-77"
    },
    {
      "type": "incorrect_source_reference",
      "severity": "medium",
      "section": "Duplication Configuration",
      "description": "Documentation references src/cli.rs:69 for threshold_duplication flag, but file location has changed",
      "current_content": "Configuration reference: src/cli.rs:69 (threshold_duplication flag definition)",
      "should_be": "Configuration reference: src/cli/args.rs:87 (threshold_duplication flag definition)",
      "fix_suggestion": "Update the source reference from src/cli.rs:69 to src/cli/args.rs:87 in both locations (lines 374 and 620)",
      "source_reference": "src/cli/args.rs:85-87"
    },
    {
      "type": "outdated_source_reference",
      "severity": "low",
      "section": "Circular Dependency Detection",
      "description": "Source reference line numbers are slightly off",
      "current_content": "Implementation: src/debt/circular.rs:44-66 (detect_circular_dependencies)",
      "should_be": "Implementation: src/debt/circular.rs:46-66 (detect_circular_dependencies)",
      "fix_suggestion": "Update line reference from 44-66 to 46-66",
      "source_reference": "src/debt/circular.rs:46-66"
    },
    {
      "type": "outdated_information",
      "severity": "low",
      "section": "Code Duplication Detection - Algorithm Details",
      "description": "Function signature shows similarity_threshold parameter but notes it's unused. The hash field is now u64 (for xxHash64) not a string hash",
      "current_content": "Hash: a3f2b9c1... (example shows string-like hash)",
      "should_be": "Hash is a u64 value (xxHash64 output)",
      "fix_suggestion": "Update the example output to show a numeric hash value instead of hex string, reflecting xxHash64 output format",
      "source_reference": "src/debt/duplication.rs:11-14"
    }
  ],
  "positive_aspects": [
    "Excellent coverage of Robert C. Martin's architectural principles",
    "Clear explanations of coupling metrics (afferent, efferent, instability)",
    "Well-structured prioritization guidelines with decision flowchart",
    "Good documentation of zone of pain and zone of uselessness concepts",
    "Accurate documentation of hardcoded thresholds and their rationale",
    "Comprehensive refactoring recommendations for each issue type",
    "Proper documentation of cohesion analysis limitations",
    "All internal links are valid and point to existing files",
    "Accurate DebtType mapping documentation"
  ],
  "improvement_suggestions": [
    "Consider adding diagrams for the dependency graph visualization",
    "Add example of xxHash64 output format in duplication detection section",
    "Update the algorithm description to emphasize performance benefits of xxHash64 (10-20x faster than SHA-256 as noted in code)"
  ],
  "metadata": {
    "analyzed_at": "2025-12-27T08:30:00Z",
    "feature_inventory": ".prodigy/book-analysis/features.json",
    "topics_covered": [
      "Circular dependency detection",
      "Coupling metrics (afferent, efferent)",
      "Bidirectional dependencies",
      "Stable dependencies principle",
      "Zone of pain detection",
      "Zone of uselessness detection",
      "Code duplication detection",
      "Refactoring recommendations"
    ],
    "validation_focus": "Check that architectural pattern detection and coupling analysis are documented",
    "source_files_verified": [
      "src/debt/circular.rs",
      "src/debt/coupling.rs",
      "src/debt/duplication.rs",
      "src/priority/debt_types.rs",
      "src/cli/args.rs"
    ],
    "internal_links_checked": 6,
    "broken_links_found": 0
  }
}
