fix(main): 临时修复因添加共享元素转场导致的FAB动画不连贯

app/src/main/kotlin/cn/super12138/todo/ui/TodoDefaults.kt

@@ -7,4 +7,8 @@ object TodoDefaults {
      * 屏幕左右两边预留边距（防止内容全部贴边显示过丑）
      */
     val screenPadding = 16.dp
+    /**
+     * 待办卡片默认高度
+     */
+    val toDoCardHeight = 80.dp
 }

app/src/main/kotlin/cn/super12138/todo/ui/pages/main/MainPage.kt

@@ -53,11 +53,11 @@ fun MainPage(
 ) {
     val toDoList = viewModel.sortedTodos.collectAsState(initial = emptyList())
     val listState = rememberLazyListState()
-    val isExpanded by remember {
+    /*val isExpanded by remember {
         derivedStateOf {
             listState.firstVisibleItemIndex == 0
         }
-    }
+    }*/
 
     val selectedTodoIds = viewModel.selectedTodoIds.collectAsState()
     var showDeleteConfirmDialog by rememberSaveable { mutableStateOf(false) }
@@ -97,9 +97,9 @@ fun MainPage(
                     enter = fadeIn() + expandIn(),
                     exit = shrinkOut() + fadeOut()
                 ) {
-                    // TODO: 修复在滑动列表时FAB位移导致的动画不连贯
+                    // TODO: 修复在滑动列表时FAB位移导致的动画不连贯（临时方案为底部加padding）
                     TodoFAB(
-                        expanded = isExpanded,
+                        expanded = true,
                         onClick = {
                             viewModel.setEditTodoItem(null) // 每次添加待办前清除上一次已选待办
                             toTodoEditPage()

app/src/main/kotlin/cn/super12138/todo/ui/pages/main/ManagerFragment.kt

@@ -45,11 +45,11 @@ fun ManagerFragment(
             thumbUnselectedColor = MaterialTheme.colorScheme.secondary,
             thumbSelectedColor = MaterialTheme.colorScheme.primary
         ),
-        modifier = modifier,
+        modifier = modifier
     ) {
         LazyColumn(
             state = state,
-            contentPadding = PaddingValues(horizontal = TodoDefaults.screenPadding)
+            contentPadding = PaddingValues(start = TodoDefaults.screenPadding, bottom = TodoDefaults.toDoCardHeight / 2, end = TodoDefaults.screenPadding)
         ) {
             if (list.isEmpty()) {
                 item {

app/src/main/kotlin/cn/super12138/todo/ui/pages/main/components/TodoCard.kt

@@ -41,6 +41,7 @@ import androidx.compose.ui.unit.dp
 import cn.super12138.todo.R
 import cn.super12138.todo.constants.Constants
 import cn.super12138.todo.logic.model.Priority
+import cn.super12138.todo.ui.TodoDefaults
 import cn.super12138.todo.utils.VibrationUtils
 
 @OptIn(ExperimentalFoundationApi::class, ExperimentalSharedTransitionApi::class)
@@ -64,7 +65,7 @@ fun TodoCard(
     ElevatedCard(
         modifier = modifier
             .fillMaxWidth()
-            .height(80.dp)
+            .height(TodoDefaults.toDoCardHeight)
     ) {
         Row(
             verticalAlignment = Alignment.CenterVertically,