# CSP Solver Development Documentation

This directory contains all planning documents, implementation notes, and detailed development documentation for the CSP Solver project.

## 📋 Implementation Progress & Completion

### Major Milestones
- **[STEP_6_1_COMPLETED.md](STEP_6_1_COMPLETED.md)** - Step 6.1 implementation completion summary
- **[STEP_9_1_COMPLETION_SUMMARY.md](STEP_9_1_COMPLETION_SUMMARY.md)** - Missing constraints and short names implementation
- **[LONG_CONSTRAINT_NAMES_REMOVAL_COMPLETE.md](LONG_CONSTRAINT_NAMES_REMOVAL_COMPLETE.md)** - Complete API modernization achievement

### Planning & Strategy
- **[PRODUCTION_READINESS_PLAN.md](PRODUCTION_READINESS_PLAN.md)** - Master production readiness roadmap
- **[efficient_solver_plan.md](efficient_solver_plan.md)** - Efficient solver development strategy
- **[implementation_plan.md](implementation_plan.md)** - Original implementation planning
- **[revised_implementation_plan.md](revised_implementation_plan.md)** - Updated implementation approach

## 🔧 Technical Implementation Details

### Variable Handling & Inference
- **[BOUND_INFERENCE_DESIGN.md](BOUND_INFERENCE_DESIGN.md)** - Automatic bound inference for unbounded variables
- **[UNBOUNDED_INFERENCE_IMPLEMENTATION.md](UNBOUNDED_INFERENCE_IMPLEMENTATION.md)** - Implementation guide and usage examples

### Precision & Performance
- **[../guides/precision_handling.md](../guides/precision_handling.md)** - Detailed precision handling implementation
- **[../guides/precision_quick_reference.md](../guides/precision_quick_reference.md)** - Quick reference for precision features
- **[batch_optimization_effort_analysis.md](batch_optimization_effort_analysis.md)** - Optimization analysis

### Development Progress
- **[implementation_progress.md](implementation_progress.md)** - Ongoing development tracking
- **[step_6_detailed_plan.md](step_6_detailed_plan.md)** - Detailed Step 6 planning
- **[callback_methods_fix.md](callback_methods_fix.md)** - Callback methods implementation

### Results & Validation
- **[step_2_3_4_results.md](step_2_3_4_results.md)** - Step 2.3.4 implementation results
- **[step_2_4_results.md](step_2_4_results.md)** - Step 2.4 implementation results

## 🗂️ Document Categories

### ✅ **Completion Reports**
Documents marking major milestone completions with comprehensive summaries.

### 📊 **Planning Documents** 
Strategic planning, roadmaps, and implementation approaches.

### 🔧 **Technical Specifications**
Detailed technical documentation for specific features and implementations.

### 📈 **Progress Tracking**
Ongoing development status and milestone tracking.

### 🧪 **Results & Analysis**
Implementation results, performance analysis, and validation reports.

## 📚 Quick Navigation

For **production readiness overview**: Start with [PRODUCTION_READINESS_PLAN.md](PRODUCTION_READINESS_PLAN.md)

For **latest achievements**: Check [STEP_9_1_COMPLETION_SUMMARY.md](STEP_9_1_COMPLETION_SUMMARY.md) and [LONG_CONSTRAINT_NAMES_REMOVAL_COMPLETE.md](LONG_CONSTRAINT_NAMES_REMOVAL_COMPLETE.md)

For **precision features**: Review [precision_quick_reference.md](precision_quick_reference.md)

For **implementation details**: See [implementation_progress.md](implementation_progress.md)
