fix: map Ozonetel 'pause' webhook action to break state

Ozonetel sends action: 'pause' via webhook when agent is paused, but
mapOzonetelAction only handled 'AUX'. The 'pause' action fell through
to default (null), so the break SSE event was never emitted. The agent
UI stayed on 'Ready' while Ozonetel had the agent PAUSED.

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

src/supervisor/supervisor.service.ts

@@ -157,6 +157,7 @@ export class SupervisorService implements OnModuleInit {
             case 'incall': return 'in-call';
             case 'ACW': return 'acw';
             case 'logout': return 'offline';
+            case 'pause': // Ozonetel sends 'pause' via webhook when agent is paused
             case 'AUX':
                 // "changeMode" is the brief AUX during login — not a real pause
                 if (eventData === 'changeMode') return null;