fix: 待办内容过长导致页面内容不可见的问题

app/src/main/kotlin/cn/super12138/todo/ui/navigation/ToDoNavigation.kt

@@ -1,5 +1,6 @@
 package cn.super12138.todo.ui.navigation
 
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.lifecycle.viewmodel.compose.viewModel
@@ -22,7 +23,8 @@ fun ToDoNavigation(
     ) {
         composable(ToDoScreen.Main.name) {
             MainPage(
-                viewModel = viewModel()
+                viewModel = viewModel(),
+                modifier = Modifier.fillMaxSize()
             )
         }
     }

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

@@ -92,7 +92,7 @@ fun MainPage(viewModel: MainViewModel, modifier: Modifier = Modifier) {
                 }
             }
         },
-        modifier = modifier.fillMaxSize()
+        modifier = modifier
     ) { innerPadding ->
         Column(modifier = Modifier.padding(innerPadding)) {
             ProgressFragment(

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

@@ -8,6 +8,8 @@ import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.FilledTonalButton
 import androidx.compose.material3.MaterialTheme
@@ -52,14 +54,16 @@ fun TodoBottomSheet(
     ) {
         Column(
             horizontalAlignment = Alignment.CenterHorizontally,
-            modifier = Modifier.padding(horizontal = 16.dp)
+            modifier = Modifier
+                .padding(horizontal = 16.dp)
+                .verticalScroll(rememberScrollState())
         ) {
             Text(
                 text = stringResource(if (toDo != null) R.string.title_edit_task else R.string.action_add_task),
                 style = MaterialTheme.typography.headlineMedium
             )
 
-            Spacer(Modifier.size(25.dp))
+            Spacer(Modifier.size(20.dp))
 
             var text by rememberSaveable { mutableStateOf(toDo?.content ?: "") }
             var isError by rememberSaveable { mutableStateOf(false) }