Workspace white screen error resolved, issue was when we migrated from the local SQLite database to the Client-Server architecture during Phase 2, we didn't implement backend endpoints for adding, updating, or deleting users. Because the app.jsx file had nowhere to send those requests, the buttons didn't do anything

api.js

@@ -66,6 +66,32 @@ class ApiService {
     return this.request('/users');
   }
 
+  async createUser(userData) {
+    const data = await this.request('/users', {
+      method: 'POST',
+      body: JSON.stringify(userData),
+    });
+    this.notify();
+    return data;
+  }
+
+  async updateUser(id, updates) {
+    const data = await this.request(`/users/${id}`, {
+      method: 'PATCH',
+      body: JSON.stringify(updates),
+    });
+    this.notify();
+    return data;
+  }
+
+  async deleteUser(id) {
+    const data = await this.request(`/users/${id}`, {
+      method: 'DELETE',
+    });
+    this.notify();
+    return data;
+  }
+
   async getTasks() {
     return this.request('/tasks');
   }