feat: restructure to swing trading pipeline with auto stock screening
- Remove debate/risk management stages (bull/bear researchers, research manager, risk debate)
- Simplify flow: Screening → Analysts (market, news, fundamentals) → Trader
- Add screening pipeline: universe builder → technical screen → fundamental screen → LLM ranking
- Add Korean market support (KRX data via FDR/pykrx, DART API, Korean news)
- Trader now outputs SWING_ORDER (BUY/SELL/PASS with entry/stop/profit/size/hold_days)
- Add swing CLI command for full pipeline execution
- Add portfolio state management module
- Pin finance-datareader==0.9.101 with fallback universe for KRX API issues
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
57d82164d2