Add a Market Gate node between the risk debate and Portfolio Manager
that verifies the target exchange is open before trade execution.
- New `market_gate.py` with `check_market_state()` and `create_market_gate()`
- Calls Headless Oracle /v5/demo (free, no API key required)
- Fail-closed: network errors default to UNKNOWN (blocked)
- Ticker suffix → MIC mapping for 22 global exchanges
- Injects [MARKET GATE] advisory into risk debate history
- Optional via `use_market_gate` config flag (default: True)
- 12 new tests covering MIC resolution, HTTP mocking, and node behavior
- Zero new dependencies (stdlib urllib only)
Resolves#514
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add effort parameter (high/medium/low) for Claude 4.5+ and 4.6 models,
consistent with OpenAI reasoning_effort and Google thinking_level.
Also add content normalization for Anthropic responses.
- Replace FinnHub with Alpha Vantage API in README documentation
- Implement comprehensive Alpha Vantage modules:
- Stock data (daily OHLCV with date filtering)
- Technical indicators (SMA, EMA, MACD, RSI, Bollinger Bands, ATR)
- Fundamental data (overview, balance sheet, cashflow, income statement)
- News and sentiment data with insider transactions
- Update news analyst tools to use ticker-based news search
- Integrate Alpha Vantage vendor methods into interface routing
- Maintain backward compatibility with existing vendor system
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Michael Msebenzi
Yijia-Xiao
luohy15
Huijae Lee
Edward Sun
maxer137