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/modals/maint-otp-modal.tsx

@@ -59,14 +59,18 @@ export const MaintOtpModal = ({ isOpen, onOpenChange, action, preStepContent, pr
                 onOpenChange(false);
                 setOtp('');
             } else {
-                // Standard sidecar endpoint
+                // Standard sidecar endpoint — include agentId from agent config
+                const agentCfg = localStorage.getItem('helix_agent_config');
+                const agentId = agentCfg ? JSON.parse(agentCfg).ozonetelAgentId : undefined;
+                const payload = { ...preStepPayload, ...(agentId ? { agentId } : {}) };
+
                 const res = await fetch(`${API_URL}/api/maint/${action.endpoint}`, {
                     method: 'POST',
                     headers: {
                         'Content-Type': 'application/json',
                         'x-maint-otp': otp,
                     },
-                    ...(preStepPayload ? { body: JSON.stringify(preStepPayload) } : {}),
+                    body: JSON.stringify(payload),
                 });
                 const data = await res.json();
                 if (res.ok) {