feat: My Performance page + logout modal + sidebar cleanup

- My Performance page with KPI cards, ECharts, DatePicker, time utilization
- Sidecar: agent summary + AHT + performance aggregation endpoint
- Logout confirmation modal
- Removed Patients from CC agent nav

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/main.tsx

@@ -20,6 +20,7 @@ import { TeamDashboardPage } from "@/pages/team-dashboard";
 import { IntegrationsPage } from "@/pages/integrations";
 import { AgentDetailPage } from "@/pages/agent-detail";
 import { SettingsPage } from "@/pages/settings";
+import { MyPerformancePage } from "@/pages/my-performance";
 import { AuthProvider } from "@/providers/auth-provider";
 import { DataProvider } from "@/providers/data-provider";
 import { RouteProvider } from "@/providers/router-provider";
@@ -51,6 +52,7 @@ createRoot(document.getElementById("root")!).render(
                                 <Route path="/outreach" element={<OutreachPage />} />
                                 <Route path="/follow-ups" element={<FollowUpsPage />} />
                                 <Route path="/call-history" element={<CallHistoryPage />} />
+                                <Route path="/my-performance" element={<MyPerformancePage />} />
                                 <Route path="/call-desk" element={<CallDeskPage />} />
                                 <Route path="/patients" element={<PatientsPage />} />
                                 <Route path="/team-dashboard" element={<TeamDashboardPage />} />