YNAB MCP

# Add Enhanced Category Management Features ## Summary This PR adds two powerful new features to the YNAB MCP: 1. `assign_to_categories`: Allocate funds from Ready to Assign to multiple categories in a single operation 2. `get_recommended_allocations`: Get AI-powered recommendations for budget distribution based on goals and spending patterns ## Implementation Details - Added two new functions to the categories API - Extended the MCP handler and schema to expose these functions - Added comprehensive documentation - Created a test script to verify functionality ## Benefits - **Time Savings**: Reduce time spent on routine budget management tasks - **Consistency**: Apply consistent budgeting patterns across categories - **Intelligence**: Leverage AI-powered recommendations based on spending patterns - **Automation**: Simplify the process of funding multiple categories at once ## Testing - Verified API functions in the test environment - Checked Docker build and functionality - Tested recommendation engine with various budget scenarios ## Documentation Full documentation provided in: - README.md updates - New file: docs/category-management.md with detailed usage instructions ## Future Enhancements Potential future enhancements could include: - Saving and loading budget templates - Additional recommendation strategies - Seasonal budget adjustments - Integration with transaction patterns