feat: SSE agent state, UCID fix, maint module, QA bug fixes

- Fix outbound disposition: store UCID from dial API response (root cause of silent disposition failure)
- SSE agent state: real-time Ozonetel state drives status toggle (ready/break/calling/in-call/acw)
- Maint module with OTP-protected endpoints (force-ready, unlock-agent, backfill, fix-timestamps)
- Maint OTP modal with PinInput component, keyboard shortcuts (Ctrl+Shift+R/U/B/T)
- Force-logout via SSE: admin unlock pushes force-logout to connected browsers
- Silence JsSIP debug flood, add structured lifecycle logging ([SIP], [DIAL], [DISPOSE], [AGENT-STATE])
- Centralize date formatting with IST-aware formatters across 11 files
- Fix call history: non-overlapping aggregates (completed/missed), correct timestamp display
- Auto-dismiss CallWidget ended/failed state after 3 seconds
- Remove floating "Helix Phone" idle badge from all pages
- Fix dead code in agent-state endpoint (auto-assign was unreachable after return)

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

src/pages/campaign-detail.tsx

@@ -12,7 +12,7 @@ import { HealthIndicator } from '@/components/campaigns/health-indicator';
 import { Button } from '@/components/base/buttons/button';
 import { useCampaigns } from '@/hooks/use-campaigns';
 import { useLeads } from '@/hooks/use-leads';
-import { formatCurrency } from '@/lib/format';
+import { formatCurrency, formatDateOnly } from '@/lib/format';
 
 const detailTabs = [
     { id: 'overview', label: 'Overview' },
@@ -41,9 +41,7 @@ export const CampaignDetailPage = () => {
 
     const formatDateShort = (dateStr: string | null) => {
         if (!dateStr) return '--';
-        return new Intl.DateTimeFormat('en-IN', { month: 'short', day: 'numeric', year: 'numeric' }).format(
-            new Date(dateStr),
-        );
+        return formatDateOnly(dateStr);
     };
 
     return (