chore: untrack .env from git to allow Hugging Face secrets to override

backend/.env

@@ -1,27 +0,0 @@
-PROJECT_NAME="NetraID AI Face Attendance"
-API_V1_STR="/api/v1"
-
-# Database Configuration
-# Natively uses SQLite for zero-setup local Windows run
-# Docker Compose will override this to use high-performance pgvector on PostgreSQL
-# DATABASE_URL="sqlite:///./netraid.db"
-# For Supabase production deployment (Option B), uncomment and replace credentials:
-DATABASE_URL="postgresql://postgres:Netra9334%23%23@db.erzowqgbpeobbzpjkmtt.supabase.co:5432/postgres"
-JWT_SECRET_KEY="c01c0be1b621e25e985b96ea6e88e2cbdfcbce52ff6ea96be220f8623eb0b21a"
-JWT_ALGORITHM="HS256"
-ACCESS_TOKEN_EXPIRE_MINUTES=60
-REFRESH_TOKEN_EXPIRE_DAYS=7
-
-INITIAL_ADMIN_EMAIL="admin@netraid.ai"
-INITIAL_ADMIN_PASSWORD="Admin@NetraID2026"
-
-KIOSK_FACE_THRESHOLD=0.60
-KIOSK_LIVENESS_THRESHOLD=0.75
-FORCE_MOCK_MODE=false
-
-UPLOAD_DIR="./uploads"
-MODELS_DIR="./models"
-
-RATE_LIMIT_PER_MINUTE=100
-ALLOWED_HOSTS="*"
-