[FEAT] 完善機台授權模組：新增搜尋過濾功能、機台資訊排版優化、更換圖格裝飾並完成後端效能優化。

app/Http/Controllers/Admin/MachineController.php

@@ -102,69 +102,6 @@ class MachineController extends AdminController
     }
 
 
-    /**
-     * AJAX: 取得特定帳號的機台分配狀態
-     */
-    public function getAccountMachines(\App\Models\System\User $user)
-    {
-        $currentUser = auth()->user();
-
-        // 安全檢查：只能操作自己公司的帳號（除非是系統管理員）
-        if (!$currentUser->isSystemAdmin() && $user->company_id !== $currentUser->company_id) {
-            return response()->json(['error' => 'Unauthorized'], 403);
-        }
-
-        // 取得該公司所有機台 (限定 company_id 以實作資料隔離)
-        $machines = Machine::where('company_id', $user->company_id)
-            ->get(['id', 'name', 'serial_no']);
-            
-        $assignedIds = $user->machines()->pluck('machines.id')->toArray();
-
-        return response()->json([
-            'user' => $user,
-            'machines' => $machines,
-            'assigned_ids' => $assignedIds
-        ]);
-    }
-
-    /**
-     * AJAX: 儲存特定帳號的機台分配
-     */
-    public function syncAccountMachines(Request $request, \App\Models\System\User $user)
-    {
-        $currentUser = auth()->user();
-
-        // 安全檢查
-        if (!$currentUser->isSystemAdmin() && $user->company_id !== $currentUser->company_id) {
-            return response()->json(['error' => 'Unauthorized'], 403);
-        }
-
-        $request->validate([
-            'machine_ids' => 'nullable|array',
-            'machine_ids.*' => 'exists:machines,id'
-        ]);
-
-        // 加固驗證：確保所有機台 ID 都屬於該使用者的公司
-        if ($request->has('machine_ids')) {
-            $machineIds = array_unique($request->machine_ids);
-            $validCount = Machine::where('company_id', $user->company_id)
-                ->whereIn('id', $machineIds)
-                ->count();
-            
-            if ($validCount !== count($machineIds)) {
-                return response()->json(['error' => 'Invalid machine IDs provided.'], 422);
-            }
-        }
-
-        $user->machines()->sync($request->machine_ids ?? []);
-
-        return response()->json([
-            'success' => true, 
-            'message' => __('Permissions updated successfully.'),
-            'assigned_machines' => $user->machines()->select('machines.id', 'machines.name', 'machines.serial_no')->get()
-        ]);
-    }
-
     /**
      * 機台使用率統計
      */