# legalis-diff TODO

## Status Summary

Version: 0.5.3 | Status: Stable | Tests: Passing | Warnings: 0

All v0.1.x series features through v0.1.9 (Integration) are complete including advanced analytics (v0.2.5) and testing/quality (v0.2.9). Natural Language Processing (v0.2.1) with multi-language support, Collaborative Features (v0.2.4), and Cloud Integration (v0.2.3) including cloud storage backends (S3, Azure, GCS) and distributed diff computation are now complete. Legal-Domain Aware Diffing (v0.3.1) with legislative history, Compliance-Focused Diffing (v0.3.4), Collaborative Diff Review (v0.3.2), and Version Control Integration (v0.3.3) are now complete. Machine Learning Integration (v0.2.0), Time-Travel Diffing (v0.3.5), Cross-Jurisdiction Diffing (v0.3.6), Enterprise Diff Management (v0.3.7), and Machine-Readable Diff Formats (v0.3.8) are now complete. AI-Powered Diff Analysis (v0.3.0) with LLM-based semantic explanations, intent detection, automatic categorization, impact prediction, and AI-assisted merge conflict resolution is now complete. GPU acceleration for large diffs (v0.2.7) and Quantum-Ready Diff Algorithms (v0.3.9) including quantum-inspired similarity, quantum fingerprinting, quantum-safe signing, hybrid classical-quantum computation, and quantum random sampling are now complete. Real-time Diff Streaming (v0.5.1) with WebSocket support, live collaborative editing, incremental streaming, server-sent events, and real-time conflict resolution is now complete. Advanced Caching & Memoization (v0.5.2) with Redis integration, Memcached support, cache invalidation strategies, smart preloading, and multi-level cache hierarchies is now complete. Machine Learning Model Integration (v0.5.3) with custom model training, transfer learning, automated retraining pipeline, model versioning and rollback, and A/B testing is now complete.

---

## Completed

- [x] Structural diff between statutes
- [x] Change categorization (added/removed/modified)
- [x] Impact assessment with severity levels
- [x] Basic change reports

## Features

- [x] Semantic diff (understanding meaning changes)
- [x] Cross-statute impact analysis
- [x] Amendment chain visualization
- [x] Diff output in multiple formats (JSON, HTML, Markdown)
- [x] Side-by-side comparison view

## Advanced Analysis

- [x] Detect logically equivalent changes
- [x] Identify breaking vs non-breaking changes
- [x] Track condition relaxation/tightening
- [x] Analyze effect scope changes

## Merge Support

- [x] Add three-way merge for concurrent amendments
- [x] Implement conflict detection and resolution
- [x] Support merge strategies (ours, theirs, union)

## Visualization

- [x] Generate visual diff reports
- [x] Timeline visualization for amendments
- [x] Blame-style annotation for change tracking

## Integration

- [x] Git-style diff interface
- [x] Hook into version control systems
- [x] Create diff templates for common patterns

## Testing

- [x] Add comprehensive diff test cases
- [x] Test edge cases (empty statutes, identical statutes)
- [x] Benchmark diff performance on large statutes

## Performance & Optimization

- [x] Implement diff caching and memoization
- [x] Add incremental diff support
- [x] Create batch diff computation
- [x] Optimize for repeated diffs

## Advanced Algorithms

- [x] Implement Myers diff algorithm
- [x] Implement Patience diff algorithm
- [x] Add edit distance calculation
- [x] Support for advanced diff operations

## Statistical Analysis

- [x] Add statistical analysis of changes
- [x] Implement change pattern detection
- [x] Create aggregate statistics across multiple diffs
- [x] Generate statistical summaries and reports

## Enhanced Error Handling

- [x] Add specific error variants for different scenarios
- [x] Implement version conflict detection
- [x] Add merge conflict error types
- [x] Support serialization error handling

## Fuzzy Matching & Similarity

- [x] Implement Levenshtein distance calculation
- [x] Add similarity scoring between changes
- [x] Find similar changes across multiple diffs
- [x] Group similar changes by pattern
- [x] Support configurable similarity thresholds

## Change Recommendation System

- [x] Implement recommendation generation based on patterns
- [x] Add priority levels (Low, Medium, High, Critical)
- [x] Support multiple recommendation categories
- [x] Provide confidence scores for recommendations
- [x] Filter and sort recommendations
- [x] Detect common pitfalls in amendments
- [x] Analyze historical patterns for suggestions

## Enhanced Summarization

- [x] Add detailed summary with confidence scores
- [x] Provide change detection confidence metrics
- [x] Include impact assessment confidence
- [x] Generate analytical insights
- [x] Break down changes by type (added/removed/modified)

## Partial Comparison Support

- [x] Compare only preconditions between statutes
- [x] Compare only effects between statutes
- [x] Support targeted diff operations
- [x] Reduce computational overhead for partial comparisons

## Parallel Processing

- [x] Implement parallel diff computation using rayon
- [x] Add batch diff operations for multiple statute pairs
- [x] Support parallel sequence diffing
- [x] Add parallel processing for multiple sequences

## Rollback Analysis

- [x] Generate rollback diffs (reverse changes)
- [x] Analyze rollback feasibility and complexity
- [x] Identify rollback risks and issues
- [x] Provide rollback recommendations
- [x] Support rollback chain generation

## Change Validation

- [x] Validate diff completeness and consistency
- [x] Detect inconsistent change data
- [x] Verify impact assessment accuracy
- [x] Check for duplicate changes
- [x] Provide validation scores and warnings

## Export Formats

- [x] CSV export for spreadsheet analysis
- [x] Batch CSV export for multiple diffs
- [x] Proper CSV escaping for special characters

## Integrated Analysis & Batch Operations

- [x] Parallel batch validation using rayon
- [x] Batch validation summaries with aggregate statistics
- [x] Failed statute tracking in batch operations
- [x] Average validation score calculation
- [x] Integration of validation with parallel processing

## Performance Benchmarks

- [x] Parallel diff pair benchmarks
- [x] Batch validation benchmarks
- [x] Parallel validation benchmarks
- [x] Rollback generation benchmarks
- [x] Rollback analysis benchmarks
- [x] Parallel rollback generation benchmarks
- [x] Parallel rollback analysis benchmarks
- [x] Rollback statistics computation benchmarks
- [x] Parallel rollback validation benchmarks

## Parallel Rollback Operations

- [x] Parallel rollback diff generation
- [x] Parallel rollback feasibility analysis
- [x] Batch rollback operations with rayon
- [x] Performance optimization for large-scale rollback processing

## Rollback Statistics

- [x] Aggregate statistics across multiple rollback analyses
- [x] Complexity distribution tracking
- [x] Risk distribution analysis
- [x] Average recommendations calculation
- [x] Feasibility metrics

## Rollback Validation

- [x] Validate rollback diffs against forward diffs
- [x] Ensure proper value reversal
- [x] Target consistency checking
- [x] Parallel rollback validation
- [x] Integration with existing validation framework

## Parallel Export Operations

- [x] Parallel export to multiple formats
- [x] Batch export with format selection
- [x] Export to all formats simultaneously
- [x] Single diff multi-format export
- [x] ExportFormat enum for type-safe format selection

## Roadmap for 0.1.0 Series

### Semantic Diff Improvements (v0.1.1)
- [x] Add semantic equivalence detection (same meaning, different syntax)
- [x] Add intent-preserving refactoring detection
- [x] Add condition relaxation/tightening metrics
- [x] Add effect scope change quantification
- [x] Add breaking change classification

### Advanced Merge (v0.1.2)
- [x] Add semantic merge for compatible changes
- [x] Add conflict resolution suggestions
- [x] Add merge preview with impact assessment
- [x] Add interactive merge mode
- [x] Add merge history tracking

### Change Analysis (v0.1.3)
- [x] Add change impact scoring (0-100 scale)
- [x] Add stakeholder impact analysis
- [x] Add regulatory compliance impact
- [x] Add backward compatibility scoring
- [x] Add migration effort estimation

### Visualization Enhancements (v0.1.4)
- [x] Add interactive HTML diff viewer
- [x] Add syntax-highlighted diff output
- [x] Add inline annotations for change explanations
- [x] Add diff animation for presentations
- [x] Add three-way diff visualization

### Pattern Recognition (v0.1.5)
- [x] Add common amendment pattern library
- [x] Add pattern-based change suggestions
- [x] Add anti-pattern detection
- [x] Add best practice recommendations
- [x] Add historical pattern learning

### Audit Trail (v0.1.6)
- [x] Add change attribution (who changed what)
- [x] Add change justification tracking
- [x] Add approval workflow integration
- [x] Add change lifecycle tracking (proposed → approved → enacted)
- [x] Add rollback planning from diffs

### Performance (v0.1.7)
- [x] Add streaming diff for large statutes
- [x] Add incremental diff updates
- [x] Add diff result caching (already implemented in optimization module)
- [x] Add memory-efficient diff algorithms

### Export Formats (v0.1.8)
- [x] Add Word track-changes format
- [x] Add PDF with highlighted changes
- [x] Add LaTeX redline format
- [x] Add unified diff format (patch files)
- [x] Add structured changelog (CHANGELOG.md)

### Integration (v0.1.9)
- [x] Add Git integration for version control (already implemented in git/vcs modules)
- [x] Add GitHub/GitLab PR diff integration
- [x] Add notification webhooks for changes
- [x] Add diff-based CI/CD triggers
- [x] Add diff API for external tools

## Roadmap for 0.2.0 Series

### Machine Learning Integration (v0.2.0)
- [x] Add ML-based change classification
- [x] Implement pattern learning from historical diffs
- [x] Add anomaly detection for unusual changes
- [x] Create predictive models for change impact
- [x] Add automated change categorization

### Natural Language Processing (v0.2.1)
- [x] Generate natural language summaries of changes
- [x] Add semantic similarity using NLP techniques
- [x] Implement intent extraction from changes
- [x] Create automated change explanations
- [x] Add multi-language support for summaries

### Advanced Visualization (v0.2.2)
- [x] Add interactive web-based diff explorer
- [x] Create dependency graphs for changes
- [x] Implement heatmaps for change frequency
- [x] Add temporal visualization of amendments
- [x] Create customizable diff dashboards

### Cloud Integration (v0.2.3)
- [x] Add cloud storage backends (S3, Azure, GCS)
- [x] Implement distributed diff computation
- [x] Add webhook integration with cloud services
- [x] Create REST API for diff operations
- [x] Add authentication and authorization

### Collaborative Features (v0.2.4)
- [x] Add real-time collaborative diff review
- [x] Implement change commenting system
- [x] Add approval workflows
- [x] Create change voting mechanisms
- [x] Add conflict resolution collaboration

### Advanced Analytics (v0.2.5)
- [x] Add time-series analysis of changes
- [x] Implement change velocity metrics
- [x] Create compliance drift detection
- [x] Add risk scoring over time
- [x] Generate trend reports

### Extensibility (v0.2.6)
- [x] Add plugin system for custom analyzers
- [x] Create DSL for custom diff rules
- [x] Implement custom export format plugins
- [x] Add scripting support (Rhai)
- [x] Create extension API

### Performance Optimization (v0.2.7)
- [x] Implement GPU acceleration for large diffs
- [x] Add incremental compilation for diff cache
- [x] Create adaptive algorithms based on input
- [x] Optimize memory usage for streaming
- [x] Add SIMD optimizations

### Security Features (v0.2.8)
- [x] Add cryptographic signing of diffs
- [x] Implement tamper detection
- [x] Add encryption for sensitive changes
- [x] Create audit trail integrity verification
- [x] Add access control for diff operations

### Testing & Quality (v0.2.9)
- [x] Add property-based testing with proptest
- [x] Implement fuzzing for diff algorithms
- [x] Create mutation testing
- [x] Add performance regression tests
- [x] Generate coverage reports

## Roadmap for 0.3.0 Series (Next-Gen Features)

### AI-Powered Diff Analysis (v0.3.0)
- [x] Add LLM-based semantic diff explanation
- [x] Implement intent detection for changes
- [x] Add automatic change categorization
- [x] Create impact prediction from diffs
- [x] Add AI-assisted merge conflict resolution

### Legal-Domain Aware Diffing (v0.3.1)
- [x] Add article/section structure awareness
- [x] Implement citation reference tracking
- [x] Add defined term propagation analysis
- [x] Create cross-reference impact detection
- [x] Add legislative history integration

### Collaborative Diff Review (v0.3.2)
- [x] Add real-time collaborative diff viewing
- [x] Implement commenting and annotation system
- [x] Add approval workflow integration
- [x] Create change request management
- [x] Add stakeholder notification system

### Version Control Integration (v0.3.3)
- [x] Add native Git integration for statutes
- [x] Implement Git LFS for large statute sets
- [x] Add branch comparison for statute variants
- [x] Create pull request diff integration
- [x] Add blame analysis for statute history

### Compliance-Focused Diffing (v0.3.4)
- [x] Add regulatory change impact assessment
- [x] Implement breaking change detection
- [x] Add backward compatibility analysis
- [x] Create compliance gap identification
- [x] Add enforcement date tracking

### Time-Travel Diffing (v0.3.5)
- [x] Add point-in-time statute reconstruction
- [x] Implement temporal diff queries
- [x] Add effective date-aware comparisons
- [x] Create sunset clause tracking
- [x] Add amendment chain visualization

### Cross-Jurisdiction Diffing (v0.3.6)
- [x] Add equivalent statute matching
- [x] Implement jurisdiction-aware normalization
- [x] Add multilingual diff alignment
- [x] Create harmonization gap detection
- [x] Add treaty comparison support

### Enterprise Diff Management (v0.3.7)
- [x] Add diff archiving and retention
- [x] Implement diff search and discovery
- [x] Add audit trail for diff operations
- [x] Create diff analytics dashboard
- [x] Add role-based diff access control

### Machine-Readable Diff Formats (v0.3.8)
- [x] Add OpenAPI diff specification
- [x] Implement JSON Patch (RFC 6902) support
- [x] Add JSON Merge Patch (RFC 7386) support
- [x] Create GraphQL schema diff
- [x] Add protobuf diff serialization

### Quantum-Ready Diff Algorithms (v0.3.9)
- [x] Add quantum-inspired similarity algorithms
- [x] Implement quantum fingerprinting for large statutes
- [x] Add quantum-safe diff signing
- [x] Create hybrid classical-quantum diff computation
- [x] Add quantum random sampling for large comparisons

## Roadmap for 0.4.0 Enhancements (Completed)

### Integration & Workflow (v0.4.0)
- [x] Comprehensive diff pipeline combining all features
- [x] Smart diff analyzer with automatic strategy selection
- [x] Distributed analysis workflow
- [x] Integration examples for real-world use cases
- [x] Enriched diff results with AI analysis
- [x] Batch processing optimizations

### Performance Benchmarks (v0.4.0)
- [x] Cloud storage operation benchmarks
- [x] Distributed computation benchmarks
- [x] GPU batch processing benchmarks
- [x] LLM analysis benchmarks
- [x] Quantum algorithm benchmarks
- [x] Comprehensive pipeline benchmarks

## Roadmap for 0.5.0 Series (Future)

### Real-time Diff Streaming (v0.5.1)
- [x] WebSocket-based real-time diff updates
- [x] Live collaborative editing with diff tracking
- [x] Incremental diff streaming for large documents
- [x] Server-sent events for diff notifications
- [x] Real-time conflict resolution

### Advanced Caching & Memoization (v0.5.2)
- [x] Redis integration for distributed caching
- [x] Memcached support for high-performance caching
- [x] Cache invalidation strategies
- [x] Smart cache preloading
- [x] Multi-level cache hierarchies

### Machine Learning Model Integration (v0.5.3)
- [x] Custom ML model training from diff history
- [x] Transfer learning for domain-specific diffs
- [x] Automated model retraining pipeline
- [x] Model versioning and rollback
- [x] A/B testing for ML predictions

### Blockchain & Distributed Ledger (v0.5.4)
- [ ] Immutable diff recording on blockchain
- [ ] Smart contract integration for automated workflows
- [ ] Distributed consensus for diff verification
- [ ] Cryptocurrency integration for paid API access
- [ ] NFT generation for important diffs

### Advanced Visualization (v0.5.5)
- [ ] 3D diff visualization for complex relationships
- [ ] VR/AR support for immersive diff exploration
- [ ] Interactive graph-based diff navigation
- [ ] Real-time collaborative visualization
- [ ] Custom visualization plugins

### Enterprise Features (v0.5.6)
- [ ] Single sign-on (SSO) integration
- [ ] LDAP/Active Directory support
- [ ] Advanced role-based access control (RBAC)
- [ ] Compliance reporting (SOC 2, GDPR, HIPAA)
- [ ] Enterprise audit logs with retention policies

### Mobile & Edge Computing (v0.5.7)
- [ ] Mobile SDK for iOS and Android
- [ ] Edge computing support for low-latency diffs
- [ ] Offline-first diff computation
- [ ] Progressive Web App (PWA) for diff viewing
- [ ] Cross-platform synchronization

### Advanced Analytics & Insights (v0.5.8)
- [ ] Predictive analytics for future changes
- [ ] Anomaly detection in diff patterns
- [ ] Change impact forecasting
- [ ] Risk assessment automation
- [ ] Custom analytics dashboards

### Interoperability & Standards (v0.5.9)
- [ ] ISO/IEC 27001 compliance
- [ ] W3C Web Standards integration
- [ ] OASIS LegalRuleML support
- [ ] Akoma Ntoso XML format support
- [ ] CEN Metalex standard compliance
