fix: flatten structure, unify indicators, remove dead code

feat: Supabase-backed user data (portfolio, favorites, trades, alerts, notifications)

feat: live position monitoring with charts + trading system production ready

fix: Toy yok policy uygulandı - tüm UI/API endpoint'leri gerçek veriye bağlandı

Production-ready: Eliminate toy data, enforce BUY gates, add API proxies

Add fetchJson wrapper (timeout/retry) and use in ML scan

Remove remaining hardcoded API base fallbacks

Remove Supabase placeholder hardcodes; show config warnings

Fix HF health check + remove hardcoded API base

Add missing API endpoints: stocks, movers, scanner, backtest, sentiment, news

Fix Supabase client - make optional with fallback

Remove old Supabase API routes - using Hugging Face ML API now

Connect Next.js to Hugging Face ML API

Add Next.js lib utilities

Add Next.js API client and config