Reworked variable system, no longer hardcoded

frontend/.env.example

@@ -0,0 +1,18 @@
+# API Configuration
+# Base URL for API requests (relative path used in production)
+VITE_API_BASE_URL=/api
+
+# Backend API URL (used for development proxy)
+VITE_API_URL=http://localhost:8000
+
+# Development Configuration
+# Port for Vite development server
+VITE_DEV_PORT=5173
+
+# Application Configuration
+# Application version displayed in UI
+VITE_APP_VERSION=0.1.5
+
+# UI/UX Configuration
+# Search input debounce delay in milliseconds
+VITE_SEARCH_DEBOUNCE_MS=300