- Add ProjectCacheManager with TTL and LRU support
- Remove redundant resolved_projects field from AccessControl
- Use DashMap for high-performance concurrent access
- Implement bidirectional caching (ID ↔ Key ↔ Project)
- Configure with 5-minute TTL and 1000 project capacity
- Update add_issue_impl to use project cache for key resolution

This improves performance by reducing API calls for project resolution
and provides a centralized caching system with advanced features.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

- Replace deprecated criterion::black_box with std::hint::black_box
- Fix unused import warnings with conditional compilation
- Update import order per Criterion 0.6 requirements

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

- Remove obvious and redundant comments that just restate the code
- Translate all Japanese comments to English
- Keep only valuable comments that explain WHY, not HOW
- Remove self-explanatory doc comments
- Improve code readability by reducing comment noise

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

- Add required/optional parameter clarity to all tool descriptions
- Specify available format options ('image', 'text', 'raw') for download tools
- Add concrete examples for parameters (e.g., 'PROJ-123', PR number: 42)
- Enhance git/request.rs with schemars descriptions for all fields
- Improve return value descriptions in tool definitions

This makes the MCP server more user-friendly for AI agents by providing
clearer parameter requirements and usage examples.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

- Remove redundant map_err after from_str calls that already have automatic error conversion
- Fix incorrect rmcp::Error import in file/bridge.rs, use crate::error::Error instead
- Simplify error handling by relying on From trait implementations

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>