Add mock options in frontend and removed from environment variables

src/static/admin.html

@@ -188,6 +188,16 @@
             <button type="submit" class="btn btn-primary">Save</button>
           </form>
         </div>
+        <h3 style="margin:1.5rem 0 1rem">Mock Mode</h3>
+        <div class="card" style="max-width:440px">
+          <p style="color:var(--text-muted);font-size:.9rem;margin-bottom:1rem">
+            When enabled, gate open requests always succeed without contacting AVConnect.
+          </p>
+          <label style="display:flex;align-items:center;gap:.75rem;cursor:pointer;margin:0">
+            <input type="checkbox" id="mock-toggle" style="width:1.1rem;height:1.1rem;flex-shrink:0;cursor:pointer" />
+            <span style="font-weight:600">Enable mock AVConnect</span>
+          </label>
+        </div>
       </div>
 
       <!-- ── Statistics pane ───────────────────────────────────────────── -->

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();