feat: Global E2E tests, multi-agent fixes, SIP agent tracing

- 13 Global Hospital smoke tests (CC Agent + Supervisor)
- Auto-unlock agent session in test setup via maint API
- agent-status-toggle sends agentId from localStorage (was missing)
- maint-otp-modal injects agentId from localStorage into all calls
- SIP manager logs agent identity on connect/disconnect/state changes
- seed-data.ts: added CC agent + marketing users, idempotent member
  creation, cleanup phase before seeding
- .gitignore: exclude test-results/ and playwright-report/

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

src/components/call-desk/agent-status-toggle.tsx

@@ -46,12 +46,12 @@ export const AgentStatusToggle = ({ isRegistered, connectionStatus }: AgentStatu
         try {
             if (newStatus === 'ready') {
                 console.log('[AGENT-STATE] Changing to Ready');
-                const res = await apiClient.post('/api/ozonetel/agent-state', { state: 'Ready' });
+                const res = await apiClient.post('/api/ozonetel/agent-state', { agentId, state: 'Ready' });
                 console.log('[AGENT-STATE] Ready response:', JSON.stringify(res));
             } else {
                 const pauseReason = newStatus === 'break' ? 'Break' : 'Training';
                 console.log(`[AGENT-STATE] Changing to Pause: ${pauseReason}`);
-                const res = await apiClient.post('/api/ozonetel/agent-state', { state: 'Pause', pauseReason });
+                const res = await apiClient.post('/api/ozonetel/agent-state', { agentId, state: 'Pause', pauseReason });
                 console.log('[AGENT-STATE] Pause response:', JSON.stringify(res));
             }
             // Don't setStatus — SSE will push the real state