feat(app-ui): 機台綁定儲存後主動推送 update_settings，機台立即套用 UI

沿用 app 既有 update_settings→downloadSetting 處理(APK 不需改)；推送失敗(離線)則下次同步套用

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/Http/Controllers/Admin/UiElementController.php

@@ -186,7 +186,7 @@ class UiElementController extends Controller
         ]);
     }
 
-    public function updateMachineBundle(Request $request, Machine $machine)
+    public function updateMachineBundle(Request $request, Machine $machine, \App\Services\Machine\MqttService $mqttService)
     {
         $validated = $request->validate([
             'ui_bundle_id' => 'nullable|integer|exists:ui_bundles,id',
@@ -201,6 +201,26 @@ class UiElementController extends Controller
         $machine->settings = $settings;
         $machine->save();
 
-        return redirect()->route('admin.app.ui-machines')->with('success', __('Saved'));
+        // 儲存後主動推送，讓機台立即重拉設定並套用 UI 換膚。
+        // 沿用 app 端既有的 update_settings 處理（MqttService → downloadSetting → 解析 UISet），APK 不需改動。
+        $command = \App\Models\Machine\RemoteCommand::create([
+            'machine_id' => $machine->id,
+            'user_id' => auth()->id(),
+            'command_type' => 'update_settings',
+            'payload' => [],
+            'status' => 'pending',
+            'remark' => __('Sync UI bundle'),
+        ]);
+
+        $pushed = $mqttService->pushCommand($machine->serial_no, 'update_settings', [], (string) $command->id);
+        if (!$pushed) {
+            $command->update(['status' => 'failed', 'note' => 'MQTT push failed']);
+        }
+
+        $message = $pushed
+            ? __('Saved and update pushed to machine.')
+            : __('Saved. Machine will apply on next sync/reboot.');
+
+        return redirect()->route('admin.app.ui-machines')->with('success', $message);
     }
 }

lang/en.json

@@ -2343,6 +2343,9 @@
     "UI element deleted": "UI element deleted",
     "UI bundle created": "UI bundle created",
     "UI bundle deleted": "UI bundle deleted",
+    "Sync UI bundle": "Sync UI bundle",
+    "Saved and update pushed to machine.": "Saved and update pushed to machine.",
+    "Saved. Machine will apply on next sync/reboot.": "Saved. Machine will apply on next sync/reboot.",
     "No data": "No data",
     "Back": "Back",
     "Rename": "Rename",

lang/zh_TW.json

@@ -2344,6 +2344,9 @@
     "UI element deleted": "UI 元素已刪除",
     "UI bundle created": "UI 組合已新增",
     "UI bundle deleted": "UI 組合已刪除",
+    "Sync UI bundle": "同步 UI 組合",
+    "Saved and update pushed to machine.": "已儲存，並已推送更新到機台（機台將立即重拉並套用）。",
+    "Saved. Machine will apply on next sync/reboot.": "已儲存。推送未成功（機台可能離線），將於下次同步／重開機時套用。",
     "No data": "無資料",
     "Back": "返回",
     "Rename": "重新命名",