feat: supervisor AI tools — agent performance, campaign stats, call summary, SLA breaches

- AiChatPanel accepts context type, team dashboard passes { type: 'supervisor' }
- Supervisor system prompt: data-driven, no bias, threshold-based comparisons

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

src/components/call-desk/ai-chat-panel.tsx

@@ -7,6 +7,7 @@ import { faPaperPlaneTop, faSparkles, faUserHeadset } from '@fortawesome/pro-duo
 const API_URL = import.meta.env.VITE_API_URL ?? 'http://localhost:4100';
 
 type CallerContext = {
+    type?: string;
     callerPhone?: string;
     leadId?: string;
     leadName?: string;