refactor(fragment): FoodListFragment 独立持有 NetViewModel

每个 FoodListFragment 通过 by viewModels() 持有独立的 NetViewModel 实例，
searchFoodState 各自隔离，不再共享 Activity 的 netViewModel。

- 删除 pendingDinnerType 字段及餐次过滤逻辑
- initObserver 改为收 Fragment 自身的 netViewModel.searchFoodState
- getDishList 直接调 netViewModel.searchFoodList，不再经由 Activity 中转
- CookingModeActivity 删除 getFoodList() 透传方法

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/java/com/shuwei/dish/match/ui/CookingModeActivity.kt

@@ -196,8 +196,4 @@ class CookingModeActivity : BaseActivity() {
         isVisible = false
     }
 
-    public fun getFoodList(param: MutableMap<String, Any>) {
-        netViewModel.searchFoodList(param = param)
-    }
-
 }

app/src/main/java/com/shuwei/dish/match/ui/fragment/FoodListFragment.kt

@@ -24,9 +24,11 @@ import com.shuwei.dish.match.ui.CookingModeActivity
 import com.shuwei.dish.match.ui.PrepareFoodActivity
 import com.shuwei.dish.match.ui.SubmitFoodActivity
 import com.shuwei.dish.match.utils.ext.dp
+import com.shuwei.dish.match.net.NetViewModel
 import com.shuwei.dish.match.utils.ext.startActivity
 import com.shuwei.dish.match.utils.ext.toast
 import com.yanzhenjie.recyclerview.SwipeMenuItem
+import androidx.fragment.app.viewModels
 import java.io.Serializable
 import kotlinx.coroutines.launch
 
@@ -45,6 +47,8 @@ class FoodListFragment : BaseFragment<FragmentFoodListBinding>() {
         }
     }
 
+    private val netViewModel: NetViewModel by viewModels()
+
     private var pageNo = 1
     private val pageSize = 100
 
@@ -55,9 +59,6 @@ class FoodListFragment : BaseFragment<FragmentFoodListBinding>() {
     /** 第一页时先查数据库存入此字段，网络结果回来后直接使用，避免时序问题 */
     private var pendingLocalList: MutableList<CookFoodEntity>? = null
 
-    /** 记录本次请求对应的餐次，响应回来时比对，忽略非本 Fragment 发起的请求结果 */
-    private var pendingDinnerType: String = "0"
-
     private var list: MutableList<FoodRecord> = mutableListOf()
     private val dishAdapter by lazy {
         FoodListAdapter(list = list).apply {
@@ -151,29 +152,19 @@ class FoodListFragment : BaseFragment<FragmentFoodListBinding>() {
         }
     }
 
-    /**
-     * 只监听 searchFoodState，避免 cookFoodListState 变化触发重复渲染。
-     * 第一页时使用 getDishList() 中预先查好的 pendingLocalList 参与合并；加载更多时直接追加。
-     * 三个 Fragment 共享同一个 searchFoodState，通过 pendingDinnerType 过滤非本 Fragment 发起的请求。
-     */
     private fun initObserver() {
         viewLifecycleOwner.lifecycleScope.launch {
             repeatOnLifecycle(Lifecycle.State.STARTED) {
-                activity.netViewModel.searchFoodState.collect { networkState ->
+                netViewModel.searchFoodState.collect { networkState ->
                     when (networkState) {
                         is UiState.Loading -> activity.showLoading()
                         is UiState.Success -> {
-                            // 餐次不匹配，忽略（其他 Fragment 发起的请求）
-                            if (dinnerType != pendingDinnerType) return@collect
                             activity.delayDismissLoading()
                             finishRefresh()
-                            // 第一页使用预查好的本地数据合并；加载更多传 null 直接追加
                             val localList = if (pageNo == 1) pendingLocalList else null
                             loadAndMergeDishList(networkState.data, localList)
                         }
                         is UiState.Error -> {
-                            // 餐次不匹配，忽略
-                            if (dinnerType != pendingDinnerType) return@collect
                             if (isAdded.not()) return@collect
                             toast(networkState.msg)
                             finishRefresh()
@@ -241,9 +232,7 @@ class FoodListFragment : BaseFragment<FragmentFoodListBinding>() {
                     dinnerType = dinnerType
                 )
             }
-            // 记录本次请求的餐次，用于响应回来时过滤其他 Fragment 发起的请求
-            pendingDinnerType = dinnerType
-            activity.getFoodList(param = param)
+            netViewModel.searchFoodList(param = param)
         }
     }