feat: handle non-trading days, track csv upload time, and refine news headlines

feat: add AI-powered Stock Picks tab with Gemini search grounding

fix(lint): resolve explicit any error in recharts tooltip formatter and update strategy prompt

fix: make streamlit imports conditional for backend deployment

feat: implement AI performance tracker against Nifty 50 benchmark

refactor: rename app from TCR to PortIQ (Portfolio Intelligence)

feat: add viewport-fixed chat assistant button and drawer for portfolio intelligence Q&A

feat(news): ranked news feed with impact labels and show-more pagination

first commit