refactor(CompanyOverview): 优化多个面板显示逻辑

- ValueChainCard: 流向关系视图时隐藏左侧导航选项
- AnnouncementsPanel: 移除重复的"最新公告"标题
- DisclosureSchedulePanel: 移除重复的"财报披露日程"标题
- CompetitiveAnalysisCard: 恢复竞争对手标签和雷达图显示

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/views/Company/components/CompanyOverview/BasicInfoTab/components/AnnouncementsPanel.tsx

@@ -8,7 +8,6 @@ import {
   HStack,
   Text,
   Badge,
-  Icon,
   Card,
   CardBody,
   IconButton,
@@ -23,7 +22,6 @@ import {
   ModalFooter,
   useDisclosure,
 } from "@chakra-ui/react";
-import { FaBullhorn } from "react-icons/fa";
 import { ExternalLinkIcon } from "@chakra-ui/icons";
 
 import { useAnnouncementsData } from "../../hooks/useAnnouncementsData";
@@ -55,10 +53,6 @@ const AnnouncementsPanel: React.FC<AnnouncementsPanelProps> = ({ stockCode }) =>
       <VStack spacing={4} align="stretch">
         {/* 最新公告 */}
         <Box>
-          <HStack mb={3}>
-            <Icon as={FaBullhorn} color={THEME.gold} />
-            <Text fontWeight="bold" color={THEME.textPrimary}>最新公告</Text>
-          </HStack>
           <VStack spacing={2} align="stretch">
             {announcements.map((announcement: any, idx: number) => (
               <Card

src/views/Company/components/CompanyOverview/BasicInfoTab/components/DisclosureSchedulePanel.tsx

@@ -5,15 +5,12 @@ import React from "react";
 import {
   Box,
   VStack,
-  HStack,
   Text,
   Badge,
-  Icon,
   Card,
   CardBody,
   SimpleGrid,
 } from "@chakra-ui/react";
-import { FaCalendarAlt } from "react-icons/fa";
 
 import { useDisclosureData } from "../../hooks/useDisclosureData";
 import { THEME } from "../config";
@@ -42,10 +39,6 @@ const DisclosureSchedulePanel: React.FC<DisclosureSchedulePanelProps> = ({ stock
   return (
     <VStack spacing={4} align="stretch">
       <Box>
-        <HStack mb={3}>
-          <Icon as={FaCalendarAlt} color={THEME.gold} />
-          <Text fontWeight="bold" color={THEME.textPrimary}>财报披露日程</Text>
-        </HStack>
         <SimpleGrid columns={{ base: 2, md: 4 }} spacing={3}>
           {disclosureSchedule.map((schedule: any, idx: number) => (
             <Card