fix: UK pence double-conversion bug + Graham Number normalization for .L tickers

feat: major architecture refactor with yFinance screener, scoring, and insider feeds

feat: implement Graham-aligned Sector Logic gatekeeper and live Portfolio paper-tracking memory

feat: upgrade agent to ReAct tool calling using Finnhub API for deep fundamental research

Fix: finance_tools

Fix: Final Sprint 5 Polish - UK Currency & Canada Links

Fix: Currency Normalization for UK/AUS stocks

Feat: Sprint 4 - Update with smarter versions

Feat: Sprint 4 - Graham & Buffett Logic Upgrade

Initial Deploy (Clean)