Files
AI-Trader/agent
Bill f1f76b9a99 fix: extract position dict from CallToolResult.structuredContent
Fix negative cash bug where ContextInjector._current_position never updated.

Root cause: MCP tools return mcp.types.CallToolResult objects, not plain
dicts. The isinstance(result, dict) check always failed, preventing
_current_position from accumulating trades within a session.

This caused all trades to calculate from initial $10,000 position instead
of previous trade's ending position, resulting in negative cash balances
when total purchases exceeded $10,000.

Solution: Extract position dict from CallToolResult.structuredContent field
before validating. Maintains backward compatibility by handling both
CallToolResult objects (production) and plain dicts (unit tests).

Impact:
- Fixes negative cash positions (e.g., -$8,768.68 after 11 trades)
- Enables proper intra-day position tracking
- Validates sufficient cash before each trade based on cumulative position
- Trade tool responses now properly accumulate all holdings

Testing:
- All existing unit tests pass (handle plain dict results)
- Production logs confirm structuredContent extraction works
- Debug logging shows _current_position now updates after each trade
2025-11-07 14:24:48 -05:00
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