Agent卡片组件UI；Agent聊天界面输入框显示问题

app/src/main/java/com/aiosman/ravenow/ui/chat/ChatAiScreen.kt

@@ -283,7 +283,7 @@ fun ChatAiScreen(userId: String) {
         Box(
             modifier = Modifier
                 .fillMaxSize()
-                .background(AppColors.decentBackground)
+                .background(Color.White)
                 .padding(paddingValues)
         ) {
             LazyColumn(

app/src/main/java/com/aiosman/ravenow/ui/index/tabs/ai/Agent.kt

@@ -369,7 +369,7 @@ fun Agent() {
                 .fillMaxWidth()
                 .weight(1f)
         ) {
-            val agentItems = viewModel.agentItems.take(15)
+            val agentItems = viewModel.agentItems
             LazyVerticalGrid(
                 columns = GridCells.Fixed(2),
                 modifier = Modifier.fillMaxWidth(),
@@ -391,7 +391,7 @@ fun Agent() {
 @Composable
 fun AgentCardSquare(agentItem: AgentItem, viewModel: AgentViewModel, navController: NavHostController) {
     val AppColors = LocalAppTheme.current
-    val cardHeight = 180.dp
+    val cardHeight = 200.dp
     val avatarSize = cardHeight / 3  // 头像大小为方块高度的三分之一
 
     // 防抖状态
@@ -449,7 +449,7 @@ fun AgentCardSquare(agentItem: AgentItem, viewModel: AgentViewModel, navControll
         ) {
             androidx.compose.material3.Text(
                 text = agentItem.title,
-                fontSize = 16.sp,
+                fontSize = 14.sp,
                 fontWeight = androidx.compose.ui.text.font.FontWeight.W600,
                 color = AppColors.text,
                 maxLines = 1,
@@ -458,21 +458,26 @@ fun AgentCardSquare(agentItem: AgentItem, viewModel: AgentViewModel, navControll
 
             Spacer(modifier = Modifier.height(8.dp))
 
+            Box(
+                modifier = Modifier
+                    .height(85.dp)
+                    .fillMaxWidth()
+            ) {
                 androidx.compose.material3.Text(
                     text = agentItem.desc,
-                fontSize = 14.sp,
+                    fontSize = 12.sp,
                     color = AppColors.secondaryText,
-                maxLines = 2,
+                    maxLines = 5,
                     overflow = androidx.compose.ui.text.style.TextOverflow.Ellipsis,
-                modifier = Modifier.weight(1f, fill = false)
                 )
+            }
 
             Spacer(modifier = Modifier.height(8.dp))
 
             // 聊天按钮，位于底部居中
             Box(
                 modifier = Modifier
-                    .width(80.dp)
+                    .width(60.dp)
                     .height(32.dp)
                     .background(
                         color = Color(0X147c7480),