feat: extend map targeting and overlay controls

Support batch feature targeting and clear map highlights and overlays from the More panel. Remove misleading action chevrons and unused configuration export entries.

Validated the isolated patch with lint, typecheck, 36 focused tests and 5 browser cases using mocked data.

src/features/workbench/components/workbench-top-bar-menus.tsx

@@ -7,7 +7,6 @@ import {
   ChevronDown,
   ChevronRight,
   Columns2,
-  Download,
   FileText,
   Keyboard,
   LogOut,
@@ -282,7 +281,6 @@ export function UserMenu({
   onRefreshTiles,
   onShowDataStatus,
   onShowShortcuts,
-  onExportConfig,
   onLogout
 }: {
   open: boolean;
@@ -292,7 +290,6 @@ export function UserMenu({
   onRefreshTiles: () => void;
   onShowDataStatus: () => void;
   onShowShortcuts: () => void;
-  onExportConfig: () => void;
   onLogout?: () => Promise<void>;
 }) {
   const [projectDialogOpen, setProjectDialogOpen] = useState(false);
@@ -335,7 +332,6 @@ export function UserMenu({
         <MenuSectionLabel>会话控制</MenuSectionLabel>
         <MenuAction icon={Activity} label="查看运行状态" description="检查数据源与运行健康度" onSelect={onShowDataStatus} />
         <MenuAction icon={RefreshCw} label="刷新地图瓦片" description="请求地图重新渲染业务图层" onSelect={onRefreshTiles} />
-        <MenuAction icon={Download} label="导出审计配置" description="保存当前地图和工具状态" onSelect={onExportConfig} />
         <MenuAction icon={Keyboard} label="操作参考" description="查看绘制与测量操作提示" onSelect={onShowShortcuts} />
         <MenuSeparator />
         <DropdownMenuItem