Addresses gemini-code-assist review on #565:
- Type hints: int | None for nullable look_back_days/limit on get_global_news
in alpha_vantage_news.py, yfinance_news.py, and news_data_tools.py.
Adds explicit str type hint to curr_date in alpha_vantage_news.py.
- Config override: news_data_tools.get_global_news no longer hardcodes
look_back_days=7 / limit=5; defaults to None so DEFAULT_CONFIG values
flow through to the dataflow layer.
- Cross-vendor consistency: alpha_vantage_news.get_news now respects the
news_article_limit config (parity with yfinance_news.get_news_yfinance).
- Fallback consistency: alpha_vantage_news.get_global_news fallback now
matches DEFAULT_CONFIG (10) instead of the legacy 50.
- 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>
octo-patch
Yijia Xiao
luohy15