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/views/Tasks.vue

@@ -86,23 +86,23 @@
               </div>
               <div class="task-actions">
                 <span class="status-tag" :class="taskStatusClass(task.status)">{{ $t(statusLabel(task.status)) }}</span>
-                <button class="task-quick-btn" title="快捷操作" @click.stop="toggleQuickMenu(task.id)">⚙️</button>
+                <button class="task-quick-btn" :title="$t('tasks.quickActions')" @click.stop="toggleQuickMenu(task.id)">⚙️</button>
                 <div v-if="quickMenuId === task.id" class="quick-menu" @click.stop>
                   <div class="quick-menu-section">
-                    <div class="quick-menu-label">状态</div>
+                    <div class="quick-menu-label">{{ $t('tasks.quickStatus') }}</div>
                     <button v-for="s in quickStatuses" :key="s.key" class="quick-menu-item" @click="quickAdvance(task.id, s.key)">
                       <span>{{ s.icon }}</span>{{ s.label }}
                     </button>
                   </div>
                   <div class="quick-menu-divider"></div>
                   <div class="quick-menu-section">
-                    <div class="quick-menu-label">优先级</div>
+                    <div class="quick-menu-label">{{ $t('tasks.quickPriority') }}</div>
                     <button v-for="p in quickPriorities" :key="p.value" class="quick-menu-item" @click="quickPriority(task.id, p.value)">
                       <span :class="p.cls">●</span>{{ p.label }}
                     </button>
                   </div>
                   <div class="quick-menu-divider"></div>
-                  <button class="quick-menu-item quick-menu-danger" @click="quickDelete(task)">🗑 删除</button>
+                  <button class="quick-menu-item quick-menu-danger" @click="quickDelete(task)">{{ $t('tasks.quickDelete') }}</button>
                 </div>
               </div>
             </div>