Add mock options in frontend and removed from environment variables

src/static/admin.js

@@ -447,8 +447,22 @@ async function loadCredentials() {
       document.getElementById("cred-username").value = list[0].username;
     }
   } catch { /* no creds yet */ }
+  try {
+    const { enabled } = await api("GET", "/api/admin/credentials/mock");
+    document.getElementById("mock-toggle").checked = enabled;
+  } catch { /* ignore */ }
 }
 
+document.getElementById("mock-toggle").addEventListener("change", async e => {
+  try {
+    await api("PUT", "/api/admin/credentials/mock", { enabled: e.target.checked });
+    showToast(e.target.checked ? "Mock mode enabled" : "Mock mode disabled");
+  } catch (err) {
+    showToast(err.message, true);
+    e.target.checked = !e.target.checked; // revert
+  }
+});
+
 document.getElementById("credentials-form").addEventListener("submit", async e => {
   e.preventDefault();
   const username = document.getElementById("cred-username").value.trim();