优化: i18n硬编码清扫(8文件20+处中文字符串替为i18n)

- ToolCard: 已等待 → aiTool.waitTime

- ErrorBoundary: 堆栈详情 → error.stackDetails

- TopBar: 10处硬编码(tooltip+section标签+单位) → aiChat.* keys

- FileExplorer: 4处工程操作title → fileExplorer.*

- Tasks: 快捷菜单4处 → tasks.*

- EnrichmentPanel: 取消关联 → aiChat.enrichmentDismiss

- PlanProgress: 复用已有 aiChat.conflictsPending

- WorkflowDagDisplay: 删除中文fallback(已有i18n key)

- vue-tsc + vite build 通过

src/components/ai/TopBar.vue

@@ -113,7 +113,7 @@
     <div class="ai-bottom-tools-right">
     <!-- 目标计数 -->
     <div v-if="goals.length" class="ai-goals-inline">
-      <span class="ai-goals-inline-badge ai-tool-badge" @click="goalsExpanded = !goalsExpanded" title="查看目标">
+      <span class="ai-goals-inline-badge ai-tool-badge" @click="goalsExpanded = !goalsExpanded" :title="$t('aiChat.viewGoals')">
         <svg width="9" height="9" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><circle cx="12" cy="12" r="6"/><circle cx="12" cy="12" r="2"/></svg>
         {{ goals.length }}
       </span>
@@ -126,7 +126,7 @@
     </div>
     <!-- 历史消息 -->
     <div v-if="historyMsgs.length" class="ai-history-inline">
-      <span class="ai-history-inline-badge ai-tool-badge" @click="historyExpanded = !historyExpanded" title="查看历史消息">
+      <span class="ai-history-inline-badge ai-tool-badge" @click="historyExpanded = !historyExpanded" :title="$t('aiChat.viewHistory')">
         <svg width="9" height="9" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>
         {{ historyMsgs.length }}
       </span>
@@ -140,44 +140,44 @@
     </div>
     <!-- 上下文摘要 -->
     <div v-if="summaryMsgs.length" class="ai-summary-inline">
-      <span class="ai-summary-inline-badge ai-tool-badge" @click="summaryExpanded = !summaryExpanded" title="查看上下文摘要">
+      <span class="ai-summary-inline-badge ai-tool-badge" @click="summaryExpanded = !summaryExpanded" :title="$t('aiChat.viewSummary')">
         <svg width="9" height="9" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 6h16M4 12h16M4 18h12"/></svg>
         {{ summaryMsgs.length }}
       </span>
       <div v-if="summaryExpanded" class="ai-summary-inline-list">
         <div v-for="(s, i) in summaryMsgs" :key="i" class="ai-summary-inline-item" @click="scrollToMessage(s.id)">
-          <span class="ai-summary-label">{{ $t('aiChat.compressedSummaryLabel') || '上下文摘要' }} #{{ summaryMsgs.length - i }}</span>
+          <span class="ai-summary-label">{{ $t('aiChat.compressedSummaryLabel') }} #{{ summaryMsgs.length - i }}</span>
           <p class="ai-summary-preview">{{ s.text }}</p>
         </div>
       </div>
     </div>
     <!-- L3 完整上下文 -->
     <div v-if="contextInfo.goals.length || contextInfo.summaryCount > 0" class="ai-context-inline">
-      <span class="ai-context-inline-badge ai-tool-badge" @click="contextExpanded = !contextExpanded" title="查看 AI 上下文">
+      <span class="ai-context-inline-badge ai-tool-badge" @click="contextExpanded = !contextExpanded" :title="$t('aiChat.viewContext')">
         <svg width="9" height="9" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M12 16v-4"/><circle cx="12" cy="8" r="1" fill="currentColor"/></svg>
       </span>
       <div v-if="contextExpanded" class="ai-context-inline-list">
         <!-- 系统提示 -->
         <div class="ai-context-section">
-          <div class="ai-context-section-title">系统提示</div>
+          <div class="ai-context-section-title">{{ $t('aiChat.contextSystemPrompt') }}</div>
           <div class="ai-context-section-body">
             <div class="ai-context-row">
               <span class="ai-context-label">目标({{ contextInfo.goals.length }})</span>
               <span class="ai-context-value">{{ contextInfo.goals.join('; ') || '无' }}</span>
             </div>
             <div class="ai-context-row">
-              <span class="ai-context-label">环境</span>
+              <span class="ai-context-label">{{ $t('aiChat.contextEnvironment') }}</span>
               <span class="ai-context-value">{{ contextInfo.osInfo }}</span>
             </div>
             <div class="ai-context-row">
-              <span class="ai-context-label">压缩摘要</span>
-              <span class="ai-context-value">{{ contextInfo.summaryCount }} 条</span>
+              <span class="ai-context-label">{{ $t('aiChat.contextCompressedSummary') }}</span>
+              <span class="ai-context-value">{{ contextInfo.summaryCount }} {{ $t('aiChat.contextCountUnit') }}</span>
             </div>
           </div>
         </div>
         <!-- 增强上下文 -->
         <div class="ai-context-section">
-          <div class="ai-context-section-title">增强上下文</div>
+          <div class="ai-context-section-title">{{ $t('aiChat.contextEnrichment') }}</div>
           <div class="ai-context-section-body">
             <div class="ai-context-row">
               <span class="ai-context-label">@项目</span>