Update requirement files with new feature templates and fix backend API error message, along with mobile project config updates and documentation improvements

03_source/mobile/src/constants.ts

@@ -1,3 +1,11 @@
-const constants = { API_ENDPOINT: import.meta.env.VITE_API_ENDPOINT };
+const isDev = import.meta.env.DEV;
+const constants = {
+  API_ENDPOINT: isDev ? import.meta.env.VITE_API_ENDPOINT : import.meta.env.VITE_PROD_API_ENDPOINT,
+};
 
+if (!constants.API_ENDPOINT) {
+  throw new Error('Please check, the API_ENDPOINT is empty');
+}
+
+export { isDev };
 export default constants;