Add NSE Dashboard: live Indian market data + Kronos AI prediction + ORB levels

[tejasbsatish]

Summary

A professional dark-themed trading terminal web UI for Indian markets (NSE) built on top of the Kronos financial foundation model.

Features

• Live NSE data via yfinance: NIFTY 50 (^NSEI), Bank NIFTY (^NSEBANK), and top NSE stocks (Reliance, TCS, HDFC Bank, Infosys, ICICI, etc.)
• Multi-interval support: 1m, 5m, 15m, 30m, 60m, 1d
• Opening Range Breakout (ORB) calculation (configurable window, default 15 min after NSE open at 09:15 IST) overlaid on chart as dotted lines
• Kronos AI prediction with async background inference via threading + job-id polling so the UI never blocks during CPU-bound model runs (1-5 min on CPU)
• Model selector: Kronos-mini (4.1M params), Kronos-small (24.7M), Kronos-base (102.3M)
• NaN sanitization: pred_df.fillna(0.0) + _safe() helper before JSON serialization, preventing JSON.parse failures when Kronos outputs NaN during denormalization
• Zoom/pan controls, category x-axis (skips market gaps), IST clock, market status indicator

New files

File	Description
webui/nse_dashboard.py	Flask app (port 7072), chart builder, async prediction routes
webui/data_fetcher.py	yfinance OHLCV fetcher + IST timezone normalization + ORB calculator
webui/templates/nse_dashboard.html	Dark trading terminal UI (Plotly + vanilla JS)
webui/requirements_nse.txt	flask flask-cors plotly yfinance pandas numpy pytz

Usage

pip install -r webui/requirements_nse.txt
python webui/nse_dashboard.py
# open http://localhost:7072