fix: flatten structure, unify indicators, remove dead code

fix: /api/eligible 404 - add HF Space endpoint + proxy

fix: ESLint error in trading route

fix: auto-trading 502 on Netlify + portfolio auto-price

fix: RLS infinite recursion on user_profiles blocking admin panel access

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

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

fix: scan-signals yoksa skorlar 0 degil unknown

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

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

Remove remaining hardcoded API base fallbacks

Fix HF health check + remove hardcoded API base

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

Add Next.js API routes