merge: sync with upstream TauricResearch/TradingAgents v0.2.2
Merges upstream/main into our fork, bringing in:
- Security: Remove chainlit (CVE-2026-22218), patch LangGrinch vulnerability
- Bug fixes: debate state init, UTF-8 encoding, stock data parsing, debate round config
- Features: OpenAI Responses API, five-tier rating scale, Anthropic effort support,
exchange-qualified tickers, yfinance retry with exponential backoff
- Refactor: risk_manager renamed to portfolio_manager
Conflicts resolved preserving our fork's:
- Per-tier LLM config (quick/mid/deep think with provider overrides)
- Separate tool files (fundamental_data_tools, core_stock_tools, etc.)
- Custom tools (get_ttm_analysis, get_peer_comparison, get_sector_relative, get_macro_regime)
- Dynamic Ollama model fetching
- Enhanced fundamentals analyst prompt with TTM analysis
- Hardened stockstats/yfinance data pipeline (_load_or_fetch_ohlcv)
- AgentOS observability layer, scanner pipeline, portfolio management
Tests: 727 passed, 14 skipped
4c186a55e8