# Sprint 49 Technical Debt Reduction

This document outlines the plan for Sprint 49 technical debt reduction, building on the success of Sprint 48.

## Current State

Sprint 48 made significant progress in reducing technical debt:
- Reduced violations from 72 to 46 (36% reduction)
- Current technical debt is 27.2 hours (down from 42.5 hours)
- Remaining HIGH severity violations: 5

## Goals

1. Further reduce technical debt from 27.2 hours to < 15 hours
2. Eliminate all HIGH severity violations
3. Improve code maintainability and resilience

## Implementation Plan

The implementation follows a 3-phase approach, focusing on highest value targets first:

### Phase 1: High Severity Violations (12.2 hours)

1. Implement WebAssembly disassembly and analysis in deep_wasm/service.rs
   - **Severity**: HIGH
   - **Estimated debt**: 1.5 hours
   - **Implementation**: Implement disassembler.rs with pattern detection

2. Mutation executor resilience in mutation/executor.rs
   - **Severity**: HIGH
   - **Estimated debt**: 4.5 hours
   - **Implementation**: Create MutantGuard (RAII), MutationState, signal handling

3. Distributed testing safety in mutation/distributed.rs
   - **Severity**: HIGH
   - **Estimated debt**: 2.0 hours
   - **Implementation**: Implement WorkerMonitor, WorkerTempFile (RAII)

4. Language analyzers in context.rs
   - **Severity**: HIGH
   - **Estimated debt**: 2.0 hours
   - **Implementation**: Implement analyzers for C/C++ and Ruby

5. Multi-language support in deep_context.rs
   - **Severity**: HIGH
   - **Estimated debt**: 2.2 hours
   - **Implementation**: Extend deep context to more languages

### Phase 2: Context.rs Improvements (9.5 hours)

1. Refactor callback handling
2. Implement caching for repeated analyses
3. Add tracing and observability
4. Improve error handling and propagation
5. Add granular timeout controls

### Phase 3: Deep Context Implementation (5.5 hours)

1. Optimize file parsing and AST generation
2. Implement incremental analysis
3. Add metrics collection
4. Improve parallel execution

## Success Criteria

1. Technical debt reduced to ≤ 15 hours (from 27.2 hours)
2. Zero HIGH severity violations remaining
3. All implementations fully tested
4. Documentation updated to reflect improvements

## Progress Tracking

Progress is tracked in [SPRINT-49-PROGRESS.md](SPRINT-49-PROGRESS.md).

## Dependencies

- Sprint 48 technical debt reduction (completed)
- MutationState serialization format (documented in state.rs)
- WebAssembly testing fixtures (in tests/fixtures/)