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Changelog

All notable changes to DeepStack are documented here.

[2.1.1] - 2025-12-17

🐛 Bug Fixes

  • Fix stale market data when backend unavailable (#38)
    • Added backend health check before trusting cached quotes
    • Returns fresh mock data with realistic prices when backend is down
    • Prevents showing outdated cached prices as "real" data

🧪 Testing & Quality

  • Comprehensive test coverage for high-risk modules (#35)
    • test_psychology_integration.py - Psychology/emotional state integration
    • test_emotional_firewall_panic.py - Panic mode and circuit breakers
    • test_paper_trader_concurrency.py - Concurrent trading safety
    • test_paper_trader_database.py - Database persistence edge cases
    • +76 new tests, +2,141 lines of test code
    • Coverage improved from 0% to 62-80% on critical trading modules

[2.1.0] - 2025-12-16

🔐 Security Hardening

  • Fix CORS misconfiguration vulnerability (#26)
  • Fix critical XSS vulnerability in JournalList (#25)
  • Add distributed rate limiting with Redis (#27)
  • Add comprehensive database security migrations (#28)
  • Resolve React hydration error #418 (#29)

💰 Credit System

  • Unified token-based usage tracking with Usage Panel
  • Model-based credit multipliers (Claude Opus > Sonnet > Haiku)
  • Loss leader strategy: Market data endpoints now free
  • Updated pricing, settings, and help documentation

📊 New Features

  • Prediction Markets: Kalshi integration with real-time odds
  • Discover Feed: Perplexity-style news discovery in NewsPanel
  • Alpha Vantage: Real market data integration for fundamentals
  • Mobile Market Watcher: Three-state collapsible panel

🎨 UI/UX Improvements

  • TradingView-style chart polish with OHLCV legend
  • Emotional Firewall: Replaced glow with subtle status dot
  • Market Watcher: Auto-collapse on tool select
  • Discover: Text-only card variant for articles without images
  • Improved chevron visibility in collapsible panels

🧪 Testing & Quality

  • 262+ unit tests for thesis and options components
  • E2E testing infrastructure with advanced utilities
  • Load testing infrastructure with k6
  • Multi-layer caching for server data performance

🐛 Bug Fixes

  • Corrected Kalshi market URL generation
  • Improved news article image extraction
  • Fixed Discover tabs client-side category filtering
  • Backend .env file loading for API keys

[2.0.0] - 2024-12-07

🚀 Major Features

Thesis Engine

  • Create and track trading hypotheses with structured fields
  • Live price monitoring with 30-second refresh
  • Circular validation gauge (0-100%)
  • Price level visualization (Entry/Target/StopLoss)
  • Status workflow: Drafting → Active → Validated/Invalidated
  • Risk/Reward calculation

Trade Journal

  • Full CRUD for trade entries
  • TipTap rich text editor for notes
  • Emotion tracking at entry and exit
  • Automatic P&L and percentage calculation
  • Direction (Long/Short) tracking
  • Lessons learned section
  • Integration with Thesis Engine

AI Pattern Learning

  • Emotion pattern analysis (win/loss correlation)
  • Symbol performance tracking
  • Behavior pattern detection (early exits, fear trading)
  • Privacy-first design with explicit consent
  • Pattern clearing capability
  • Integration with AI chat context

Product Tiers

  • Free tier: 10 AI queries/12hrs, 15m delayed data, 1 thesis
  • Pro tier: Unlimited AI, real-time data, full features
  • Quota tracking with paywall integration

UI/UX Improvements

  • Persistent disclaimer banner ("Not Financial Advice")
  • Back buttons on all feature pages
  • Research Tools section in sidebar
  • Improved navigation flow

🔧 Technical Changes

  • Added Zustand stores: quota-store, thesis-store, journal-store, pattern-store
  • Extended chat API with pattern context for personalization
  • TipTap integration with SSR hydration fix
  • New API routes: /api/journal, /api/thesis

🐛 Bug Fixes

  • Fixed TipTap SSR hydration mismatch with immediatelyRender: false
  • Removed duplicate DialogClose buttons
  • Fixed Progress component import error

[1.5.0] - 2024-12-06

Features

  • Professional charting with symbol search
  • Multi-timeframe support
  • Advanced chart indicators

[1.4.0] - 2024-12-05

Features

  • Real-time market data integration
  • Alpaca API proxy routes
  • Live watchlist updates

[1.3.0] - 2024-12-04

Features

  • Options chain display
  • Options strategy builder
  • Greeks calculations

[1.2.0] - 2024-12-03

Features

  • Stock screener with real data
  • News feed integration
  • Economic calendar

[1.1.0] - 2024-12-02

Features

  • Multi-provider AI support (Claude, GPT, Gemini)
  • Extended thinking mode
  • Streaming responses

[1.0.0] - 2024-12-01

Initial Release

  • AI-powered trading chat interface
  • Basic charting
  • Watchlist management
  • Paper trading integration