feat(settings): 增加全局表格分页配置,支持自定义

backend/internal/service/setting_service_update_test.go

@@ -202,3 +202,24 @@ func TestParseDefaultSubscriptions_NormalizesValues(t *testing.T) {
 		{GroupID: 12, ValidityDays: MaxValidityDays},
 	}, got)
 }
+
+func TestSettingService_UpdateSettings_TablePreferences(t *testing.T) {
+	repo := &settingUpdateRepoStub{}
+	svc := NewSettingService(repo, &config.Config{})
+
+	err := svc.UpdateSettings(context.Background(), &SystemSettings{
+		TableDefaultPageSize:  50,
+		TablePageSizeOptions: []int{20, 50, 100},
+	})
+	require.NoError(t, err)
+	require.Equal(t, "50", repo.updates[SettingKeyTableDefaultPageSize])
+	require.Equal(t, "[20,50,100]", repo.updates[SettingKeyTablePageSizeOptions])
+
+	err = svc.UpdateSettings(context.Background(), &SystemSettings{
+		TableDefaultPageSize:  1000,
+		TablePageSizeOptions: []int{20, 100},
+	})
+	require.NoError(t, err)
+	require.Equal(t, "1000", repo.updates[SettingKeyTableDefaultPageSize])
+	require.Equal(t, "[20,100]", repo.updates[SettingKeyTablePageSizeOptions])
+}