test(frontend): UIUX E2E 测试 — 新增路由导航/创始人端/Admin端/工作台/移动端适配

新增 6 个 E2E 测试文件，覆盖 2-task-uiux.md 全部 50 项任务：
- uiux-navigation.spec.ts: 8 tests (today/compare/threads/workspace/ooda/ai-plus/profiles)
- sidebar-navigation.spec.ts: 6 tests (投资人 Sidebar 6 业务域)
- founder-uiux.spec.ts: 7 tests (创始人端 6 域导航)
- admin-uiux.spec.ts: 3 tests (Admin 6 管理域 + 商业秘密保护)
- workbench-uiux.spec.ts: 5 tests (Highlights/WorkMode/Tab/InsightRail)
- mobile-uiux.spec.ts: 5 tests (移动端抽屉导航 + 创始人底部导航)

同时修复全部 no-explicit-any 警告，替换为 TypeScript 接口定义。

测试结果: 41 E2E passed, 405 backend passed

frontend/src/app/(investor)/okrs/page.tsx

@@ -1,19 +1,35 @@
 "use client";
 
 import { useEffect, useState } from "react";
-import { Target, Plus } from "lucide-react";
+import {Plus } from "lucide-react";
 import { listOKRs } from "@/lib/api-v2";
 import { PageContainer, Badge, Card } from "@/components/shared/PageContainer";
 import { LoadingSpinner } from "@/components/shared/LoadingSpinner";
 import { EmptyState } from "@/components/shared/EmptyState";
 
+/** OKR 关键结果项。 */
+interface KeyResult {
+  title?: string;
+  objective?: string;
+  progress?: number;
+}
+
+/** OKR 项。 */
+interface OKRItem {
+  quarter: string;
+  objective: string;
+  alignment_score?: number;
+  status: string;
+  key_results?: KeyResult[];
+}
+
 export default function OKRsPage() {
-  const [items, setItems] = useState<Record<string, any>[]>([]);
+  const [items, setItems] = useState<OKRItem[]>([]);
   const [isLoading, setIsLoading] = useState(true);
 
   useEffect(() => {
     listOKRs()
-      .then((resp) => setItems((resp.data as Record<string, any>[]) ?? []))
+      .then((resp) => setItems((resp.data as OKRItem[]) ?? []))
       .catch(() => setItems([]))
       .finally(() => setIsLoading(false));
   }, []);
@@ -38,21 +54,21 @@ export default function OKRsPage() {
             <Card key={i}>
               <div className="flex items-center justify-between">
                 <div>
-                  <Badge color="blue">{item.quarter as string}</Badge>
-                  <h3 className="mt-1 font-medium text-gray-900">{item.objective as string}</h3>
+                  <Badge color="blue">{item.quarter}</Badge>
+                  <h3 className="mt-1 font-medium text-gray-900">{item.objective}</h3>
                 </div>
                 <div className="flex items-center gap-2">
                   {item.alignment_score != null && (
-                    <Badge color={(item.alignment_score as number) >= 75 ? "green" : "amber"}>
+                    <Badge color={item.alignment_score >= 75 ? "green" : "amber"}>
                       对齐度 {item.alignment_score}
                     </Badge>
                   )}
-                  <Badge color={item.status === "active" ? "green" : "gray"}>{item.status as string}</Badge>
+                  <Badge color={item.status === "active" ? "green" : "gray"}>{item.status}</Badge>
                 </div>
               </div>
               {Array.isArray(item.key_results) && (
                 <div className="mt-2 space-y-1">
-                  {(item.key_results as Record<string, any>[]).map((kr, ki) => (
+                  {item.key_results.map((kr, ki) => (
                     <div key={ki} className="flex items-center gap-2 text-sm text-gray-600">
                       <span className="h-1.5 w-1.5 rounded-full bg-gray-400" />
                       {String(kr.title ?? kr.objective ?? kr)}