fix(ui): align app routes with current master

ui/src/App.tsx

@@ -40,15 +40,13 @@ import { GoalDetail } from "./pages/GoalDetail";
 import { Approvals } from "./pages/Approvals";
 import { ApprovalDetail } from "./pages/ApprovalDetail";
 import { Costs } from "./pages/Costs";
-import { Activity } from "./pages/Activity";
+import { CompanyActivity } from "./pages/audit/CompanyActivity";
 import { Inbox } from "./pages/Inbox";
 import { WhatNeedsMe } from "./pages/WhatNeedsMe";
 import { TrainingInspector, TrainingLibrary } from "./pages/Training";
 import { BoardChat } from "./pages/BoardChat";
 import { CompanySettings } from "./pages/CompanySettings";
 import { CompanyEnvironments } from "./pages/CompanyEnvironments";
-import { CloudUpstream } from "./pages/CloudUpstream";
-import { CloudUpstreamUxLab } from "./pages/CloudUpstreamUxLab";
 import { BootstrapSetupUxLab } from "./pages/BootstrapSetupUxLab";
 import { ResponsibleUserDenialUxLab } from "./pages/ResponsibleUserDenialUxLab";
 import { CompanySettingsPluginPage } from "./pages/CompanySettingsPluginPage";
@@ -108,7 +106,7 @@ function boardRoutes() {
       <Route path="companies" element={<Companies />} />
       <Route path="company/settings" element={<CompanySettings />} />
       <Route path="company/settings/environments" element={<Navigate to="/company/settings/instance/environments" replace />} />
-      <Route path="company/settings/cloud-upstream" element={<CloudUpstream />} />
+      <Route path="company/settings/cloud-upstream" element={<Navigate to="/company/export" replace />} />
       <Route path="company/settings/members" element={<CompanyAccess />} />
       <Route path="company/settings/access" element={<CompanyAccessLegacyRoute />} />
       <Route path="company/settings/invites" element={<CompanyInvites />} />
@@ -260,7 +258,7 @@ function boardRoutes() {
       <Route path="approvals/all" element={<Approvals />} />
       <Route path="approvals/:approvalId" element={<ApprovalDetail />} />
       <Route path="costs" element={<Costs />} />
-      <Route path="activity" element={<Activity />} />
+      <Route path="activity" element={<CompanyActivity />} />
       {/* Conference Room Chat surfaces (PAP-136/PAP-137): routes stay
           registered but redirect to the company home while the experimental
           flag is off. The board-level `artifacts` mount below is the new
@@ -540,7 +538,6 @@ export function App() {
         <Route path="cli-auth/:id" element={<CliAuthPage />} />
         <Route path="invite/:token" element={<InviteLandingPage />} />
         <Route path="tests/perf/long-thread" element={<IssueChatLongThreadPerf />} />
-        <Route path="ux-lab/cloud-upstream" element={<CloudUpstreamUxLab />} />
         <Route path="ux-lab/bootstrap-setup" element={<BootstrapSetupUxLab />} />
         <Route path="ux-lab/responsible-user-denial" element={<ResponsibleUserDenialUxLab />} />