변경사항 가져오기 기능 추가

[gagip]

• Service : 해시 키를 이용해 변경사항(diff) 내용 가져오기 기능 추가
• mcp_server: 변경사항 가져오기 api 추가

[Copilot]

Pull request overview

This pull request adds functionality to retrieve detailed commit changes (diffs) using commit hashes, providing a new API endpoint for the MCP server. The version is bumped from 0.2.0 to 0.3.0.

Changes:

• Added get_commit_changes service method and MCP tool for retrieving commit diffs by hash
• Created new formatters.py module to refactor and organize output formatting logic
• Restructured documentation by moving detailed content from CLAUDE.md to separate docs/ files (usage.md, testing.md, architecture.md)

Reviewed changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
pyproject.toml	Version bump from 0.2.0 to 0.3.0
uv.lock	Lock file updated for new version
git_log_analysis/mcp/data_loader.py	Added load_commit_changes method to retrieve commit diffs by hash with error handling
git_log_analysis/mcp/service.py	Added get_commit_changes service wrapper with exception handling
git_log_analysis/mcp/formatters.py	New module with formatting functions for commit changes, search results, and project lists
mcp_server.py	Added get_commit_changes tool and refactored to use new formatter functions
tests/test_commit_changes.py	Comprehensive test suite for the new commit changes functionality
tests/conftest.py	Updated test fixtures to generate realistic commit hashes and changes files
README.md	Updated MCP tools documentation with new get_commit_changes tool and usage examples
CLAUDE.md	Restructured to focus on project overview and code guidelines
docs/usage.md	New file with detailed usage instructions
docs/testing.md	New file with testing infrastructure documentation
docs/architecture.md	New file with system architecture overview

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The description claims the search_commits tool searches "커밋 메시지 및 파일 경로" (commit message and file path), but the actual implementation in query_engine.py only searches commit messages (line 110: 'if params.keyword in commit.message.lower()'). This documentation is inaccurate and should be corrected to only mention commit messages, or the implementation should be updated to actually search file paths.

Suggested change

	- `keyword`: 검색 키워드 (커밋 메시지 및 파일 경로)
	- `keyword`: 검색 키워드 (커밋 메시지)

[Copilot]

The comment was removed explaining that this file provides guidance to Claude Code. While the comment may have been considered redundant, removing this context makes it less clear what the purpose of CLAUDE.md is for developers who are not familiar with Claude Code integration.

Suggested change

	This document provides guidance and context for Claude Code / Claude Desktop (and other AI coding assistants) when interacting with this repository.