Add environment variable for API URL; update TypeScript configuration to include vite-env; refactor API client to use environment variable; modify timestamp fields in database schemas to include timezone support

client/src/lib/api.ts

@@ -2,7 +2,7 @@ import ky from "ky";
 
 // Базовый API клиент
 export const api = ky.create({
-  prefixUrl: "http://localhost:3000",
+  prefixUrl: import.meta.env.VITE_API_URL,
   headers: {
     "Content-Type": "application/json",
   },
@@ -11,6 +11,7 @@ export const api = ky.create({
       (request) => {
         // Автоматически добавляем токен из localStorage если есть
         const token = localStorage.getItem("authToken");
+
         if (token) {
           request.headers.set("Authorization", `Bearer ${token}`);
         }