feat(frontend): 全局企业筛选同步 — 各页面显示企业名标签

- 新增 useCompanyName hook 和 CompanyNameTag 组件
- 20+ investor 页面添加 CompanyNameTag 显示企业名
- 表格型页面（agents/agreements/board/weak-signals/talents/reports）新增企业列
- 卡片型页面（risks/synergies/sentinels/alpha/exit-signals/okrs/aars/events/tasks/pre-mortems/nudges/product-diagnostics/peer-circles）添加企业名标签
- customer-success 改用 CompanyNameTag 替代手动 company_name 显示
- PlanCard 组件添加企业名标签
- 编译验证通过

frontend/src/app/(investor)/pre-mortems/page.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from "react";
 import { useScopeEffect } from "@/lib/company-scope";
+import { CompanyNameTag } from "@/components/shared/CompanyNameTag";
 import {Sparkles } from "lucide-react";
 import { listPreMortems, runPreMortem, listRedTeams, runRedTeam } from "@/lib/api-v2";
 import { PageContainer, Card, Badge } from "@/components/shared/PageContainer";
@@ -11,6 +12,7 @@ import { toast } from "sonner";
 
 /** Pre-mortem 记录项。 */
 interface PreMortemItem {
+  company_id?: string;
   decision_context: string;
   failure_paths?: FailurePath[];
 }
@@ -22,6 +24,7 @@ interface FailurePath {
 
 /** Red Team 记录项。 */
 interface RedTeamItem {
+  company_id?: string;
   perspective: string;
   analysis: string;
 }
@@ -118,6 +121,7 @@ export default function PreMortemsPage() {
           <div className="space-y-3">
             {preMortems.map((item, i) => (
               <Card key={i}>
+                <CompanyNameTag companyId={item.company_id} />
                 <h3 className="font-medium text-gray-900">{item.decision_context as string}</h3>
                 {Array.isArray(item.failure_paths) && (
                   <div className="mt-2 space-y-1">
@@ -136,6 +140,7 @@ export default function PreMortemsPage() {
             {redTeams.map((item, i) => (
               <Card key={i}>
                 <div className="flex items-center gap-2">
+                  <CompanyNameTag companyId={item.company_id} />
                   <Badge color="red">{item.perspective as string}</Badge>
                 </div>
                 <p className="mt-2 text-sm text-gray-600">{item.analysis as string}</p>