fix: 适配 watchlist 新数据结构

- CompactSearchBox: 改用 Redux 获取股票列表
 - useWatchlist: 适配 { stock_code, stock_name }[] 结构
 - Center: 修复 watchlist key + H5 评论 Badge 溢出

src/views/Dashboard/Center.js

@@ -321,7 +321,7 @@ export default function CenterDashboard() {
                   <VStack align="stretch" spacing={2}>
                     {watchlist.slice(0, 10).map((stock) => (
                       <LinkBox
-                        key={stock.id}
+                        key={stock.stock_code}
                         p={3}
                         borderRadius="md"
                         _hover={{ bg: hoverBg }}
@@ -568,15 +568,22 @@ export default function CenterDashboard() {
                           <Text fontSize="sm" noOfLines={3}>
                             {comment.content}
                           </Text>
-                          <HStack justify="space-between" fontSize="xs" color={secondaryText}>
-                            <HStack>
+                          <HStack justify="space-between" fontSize="xs" color={secondaryText} spacing={2}>
+                            <HStack flexShrink={0}>
                               <Icon as={FiClock} />
                               <Text>{formatDate(comment.created_at)}</Text>
                             </HStack>
                             {comment.event_title && (
                               <Tooltip label={comment.event_title}>
-                                <Badge variant="subtle" fontSize="xs">
-                                  {comment.event_title.slice(0, 20)}...
+                                <Badge
+                                  variant="subtle"
+                                  fontSize="xs"
+                                  maxW={{ base: '120px', md: '180px' }}
+                                  overflow="hidden"
+                                  textOverflow="ellipsis"
+                                  whiteSpace="nowrap"
+                                >
+                                  {comment.event_title}
                                 </Badge>
                               </Tooltip>
                             )}