# Refactoring Documentation

This directory contains documentation related to various refactoring efforts and architectural plans for the Chroma MCP Server project. The documents are organized chronologically by implementation sequence and grouped by subject area.

## Document Index

| Document | Purpose | Timeline | Implementation Status/Remarks |
|----------|---------|----------|-------------------------------|
| [local_rag_pipeline_plan_v1.md](./local_rag_pipeline_plan_v1.md) | Initial plan for the Local RAG (Retrieval Augmented Generation) pipeline architecture | Phase 1 | Initial design document, superseded by v2 |
| [local_rag_pipeline_plan_v2.md](./local_rag_pipeline_plan_v2.md) | Revised plan for the Local RAG pipeline with improved collection structure | Phase 1 | Refinement of v1, incorporating feedback and clarifying collection roles |
| [local_rag_pipeline_plan_v3.md](./local_rag_pipeline_plan_v3.md) | Enhanced Local RAG pipeline with added bidirectional linking and context management | Phase 2 | Extended v2 with enhanced context capture features |
| [local_rag_pipeline_plan_v4.md](./local_rag_pipeline_plan_v4.md) | Current implementation plan with comprehensive context capture and thinking tools integration | Phase 2-3 | Active plan incorporating all enhanced features, including code diffs, confidence scores, and bidirectional linking |
| [refactor_plan_mcp_sdk_compliance_v1.md](./refactor_plan_mcp_sdk_compliance_v1.md) | Initial plan for making Chroma MCP Server compliant with MCP SDK standards | Independent | First version of SDK compliance plan |
| [refactor_plan_mcp_sdk_compliance_v2.md](./refactor_plan_mcp_sdk_compliance_v2.md) | Detailed plan for MCP SDK compliance with expanded implementation details | Independent | Current SDK compliance plan with detailed implementation steps |
| [hatch_smithery_integration.md](./hatch_smithery_integration.md) | Documentation for integrating Hatch and Smithery build tools into the project | Infrastructure | Implemented for development workflow improvements |
| [mcp-reference.md](./mcp-reference.md) | Reference documentation for MCP (Model Control Protocol) implementation | Reference | Provides specifications and guidelines for MCP development |

## Implementation Phases Explained

### Phase 1: Basic Local RAG Pipeline

The initial implementation focused on creating a functioning RAG pipeline with basic collection structure and core functionality. This established the foundation for storing and retrieving chat history and code snippets.

### Phase 2: Enhanced Context Capture

Building on the basic pipeline, this phase focused on enriching the context capture with bidirectional linking between code and discussions, tool sequence tracking, confidence scoring, and semantic code chunking. This enhancement significantly improved the quality of retrieved context.

### Phase 3: Thinking Tools Integration

The current phase integrates the sequential thinking utilities with the enhanced context system, creating a comprehensive framework for reasoning about code changes with rich contextual awareness.

## Other Refactoring Efforts

In parallel with the RAG pipeline development, other refactoring efforts have addressed:

1. **SDK Compliance**: Ensuring the Chroma MCP Server adheres to MCP SDK standards for interoperability.
2. **Build System Improvements**: Integration of Hatch and Smithery for improved development workflow.
3. **Collection Schema Evolution**: Progressive refinement of the ChromaDB collection schema to support richer metadata and more effective retrieval.

For questions about specific implementations, refer to the individual documents or review the implementation code in the corresponding modules.
