Add SqliteSaver-based checkpointing so crashed analyses resume from the
last successful graph node instead of restarting from scratch.
- checkpointer.py: get_checkpointer(), thread_id(), has/clear_checkpoint()
- --checkpoint flag (default: off for backward compatibility)
- --clear-checkpoints flag to force fresh start
- Per-ticker SQLite DBs for parallel worker safety
- Logs 'Resuming from step N' vs 'Starting fresh'
- Clears checkpoint on successful completion (no stale state)
- Tests: crash resume + different date starts fresh
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>
Clayton Brown
Yijia-Xiao
luohy15
Huijae Lee
Edward Sun
maxer137