feat: implement auth, projects, and frontend foundation

apps/web/src/api/client.ts

@@ -0,0 +1,26 @@
+import axios from "axios";
+
+const BASE_URL = import.meta.env.VITE_API_BASE_URL ?? "http://localhost:8000";
+
+export const apiClient = axios.create({
+  baseURL: BASE_URL,
+  withCredentials: true,
+  headers: {
+    "Content-Type": "application/json"
+  }
+});
+
+export const shouldSkipAuthRedirect = (path: string): boolean => {
+  return path.startsWith("/login") || path.startsWith("/auth");
+};
+
+apiClient.interceptors.response.use(
+  (response) => response,
+  (error) => {
+    const status = error?.response?.status;
+    if (status === 401 && !shouldSkipAuthRedirect(window.location.pathname)) {
+      window.location.assign("/auth/login");
+    }
+    return Promise.reject(error);
+  }
+);