feat(activity): 實作使用者角色分配操作紀錄

- 在使用者建立 (store) 時，將角色名稱寫入操作紀錄

- 在使用者更新 (update) 時，手動比對與紀錄角色名稱異動

app/Http/Controllers/Admin/UserController.php

@@ -76,6 +76,21 @@ class UserController extends Controller
 
         if (!empty($validated['roles'])) {
             $user->syncRoles($validated['roles']);
+
+            // Update the 'created' log to include roles
+            $activity = \Spatie\Activitylog\Models\Activity::where('subject_type', get_class($user))
+                ->where('subject_id', $user->id)
+                ->where('event', 'created')
+                ->latest()
+                ->first();
+
+            if ($activity) {
+                $roleNames = $user->roles()->pluck('display_name')->join(', ');
+                $properties = $activity->properties;
+                $properties['attributes']['role_id'] = $roleNames;
+                $activity->properties = $properties;
+                $activity->save();
+            }
         }
 
         return redirect()->route('users.index')->with('success', '使用者建立成功');
@@ -102,6 +117,7 @@ class UserController extends Controller
     public function update(Request $request, string $id)
     {
         $user = User::findOrFail($id);
+        $oldRoles = $user->roles()->pluck('display_name')->join(', ');
 
         $validated = $request->validate([
             'name' => ['required', 'string', 'max:255'],
@@ -128,6 +144,20 @@ class UserController extends Controller
 
         if (isset($validated['roles'])) {
             $user->syncRoles($validated['roles']);
+            
+            $newRoles = $user->roles()->pluck('display_name')->join(', ');
+
+            if ($oldRoles !== $newRoles) {
+                activity()
+                    ->performedOn($user)
+                    ->causedBy(auth()->user())
+                    ->event('updated')
+                    ->withProperties([
+                        'attributes' => ['role_id' => $newRoles],
+                        'old' => ['role_id' => $oldRoles],
+                    ])
+                    ->log('updated');
+            }
         }
 
         return redirect()->route('users.index')->with('success', '使用者更新成功');