feat(phase-23): add Threat Actor profiles with MITRE CTI import, API, heatmap and gap analysis (T-208 to T-212)

frontend/src/App.tsx

@@ -12,6 +12,8 @@ import SystemPage from "./pages/SystemPage";
 import UsersPage from "./pages/UsersPage";
 import AuditLogPage from "./pages/AuditLogPage";
 import DataSourcesPage from "./pages/DataSourcesPage";
+import ThreatActorsPage from "./pages/ThreatActorsPage";
+import ThreatActorDetailPage from "./pages/ThreatActorDetailPage";
 import Layout from "./components/Layout";
 import ProtectedRoute from "./components/ProtectedRoute";
 
@@ -38,6 +40,8 @@ export default function App() {
         <Route path="/test-catalog" element={<TestCatalogPage />} />
         <Route path="/test-catalog/:templateId/use" element={<TestCatalogPage />} />
         <Route path="/reports" element={<ReportsPage />} />
+        <Route path="/threat-actors" element={<ThreatActorsPage />} />
+        <Route path="/threat-actors/:actorId" element={<ThreatActorDetailPage />} />
         <Route
           path="/system"
           element={