Add detailed market data backend design document - #2
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Documents the completed market data subsystem (unified interface, GBM simulator, Massive API client) with code snippets drawn from the actual implementation in backend/app/market/, consolidating the architecture, math, and integration points into a single reference. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018yvjiC2dmc9RXSfknhoHxk
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Summary
planning/MARKET_DATA_DESIGN.md, a detailed design document for the market data backend (unifiedMarketDataSourceinterface, GBM simulator, Massive/Polygon.io REST client).backend/app/market/rather than the earlier draft inplanning/archive/, and corrects a few small discrepancies between that draft and the shipped code (e.g.PriceUpdatecomputingchange/directionas properties,MassiveDataSource's immediate first poll and_fetch_snapshotsthread-offload helper).Test plan
backend/app/market/*.py.🤖 Generated with Claude Code
https://claude.ai/code/session_018yvjiC2dmc9RXSfknhoHxk
Generated by Claude Code