Import source: backend/.env.example

Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.

backend/.env.example

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+# --- Port & Environment Config ---
+PORT=3020
+HOST=127.0.0.1
+NODE_ENV=development
+
+# --- PostgreSQL Database ---
+DATABASE_URL="postgresql://coaxys_panel:coaxys_pass@127.0.0.1:5432/coaxys_panel?schema=public"
+
+# --- Redis & Queues ---
+REDIS_URL="redis://127.0.0.1:6379"
+REDIS_KEY_PREFIX="coaxys_panel"
+
+# --- Authentication & Session Cryptography ---
+JWT_SECRET="your_jwt_secret_must_be_at_least_32_chars_long"
+SESSION_SECRET="your_session_secret_must_be_at_least_32_chars_long"
+COOKIE_DOMAIN="localhost"
+
+# --- Logging & Diagnostics ---
+LOG_LEVEL=info
+
+# --- File Paths ---
+UPLOAD_DIR="/var/lib/coaxyspanel/uploads"
+BACKUP_DIR="/var/backups/coaxyspanel"