feat: call-desk refresh — disposition modal, active-call UI, worklist + perf updates

- Call-desk: active-call-card supervisor presence badges, incoming-call-card polish, transfer-dialog, call-log
- Disposition modal: auto-lock based on actions taken, not-interested split
- Forms: appointment-form + enquiry-form improvements (placeholder handling, phone format)
- Worklist-panel: pagination awareness, filter chips
- Pages: all-leads/patients/patient-360/missed-calls/team-performance/call-history/appointments polish
- SIP: sip-client reconnect, sip-provider + sip-manager state, agent-status-toggle spinner
- Hooks: use-agent-state supervisor SSE events, use-worklist, use-performance-alerts
- Types: entities.ts extended

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

src/pages/all-leads.tsx

@@ -1,6 +1,6 @@
 import type { FC } from 'react';
 import { useMemo, useState } from 'react';
-import { useSearchParams } from 'react-router';
+import { useSearchParams, useNavigate } from 'react-router';
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
 import { faArrowLeft, faArrowDownToLine, faMagnifyingGlass } from '@fortawesome/pro-duotone-svg-icons';
 
@@ -38,6 +38,7 @@ const PAGE_SIZE = 15;
 
 export const AllLeadsPage = () => {
     const { user } = useAuth();
+    const navigate = useNavigate();
     const [searchParams] = useSearchParams();
     const initialSource = searchParams.get('source') as LeadSource | null;
     const [tab, setTab] = useState<TabKey>('new');
@@ -231,11 +232,11 @@ export const AllLeadsPage = () => {
                 <div className="flex shrink-0 items-center justify-between px-6 py-3 border-b border-secondary">
                     <div className="flex items-center gap-3">
                         <Button
-                            href="/"
+                            onClick={() => navigate(-1)}
                             color="secondary"
                             size="sm"
                             iconLeading={ArrowLeft}
-                            aria-label="Back to workspace"
+                            aria-label="Back"
                         />
 
                         <Tabs selectedKey={tab} onSelectionChange={handleTabChange}>