v0.2.2 - Fix Claude Desktop read-only filesystem

Changes

Bug Fixes

• Fixed [Errno 30] Read-only file system: 'data' error in Claude Desktop
• Changed default data directory from relative data/ to ~/.black-litterman/data
• Added BL_DATA_DIR environment variable for custom data directory override

New Features

• Added backtest_portfolio tool for portfolio performance validation
• Supports multiple backtesting strategies: buy_and_hold, passive_rebalance, risk_managed
• Comprehensive metrics: Sharpe, Sortino, max_drawdown, alpha, beta

Installation

uv tool install black-litterman-mcp==0.2.2

Claude Desktop Configuration

No changes needed! The MCP server now automatically uses ~/.black-litterman/data instead of a relative path.