feat(psa): ticket queue dashboard with board selector and session auto-start

- Add PSABoard type + list_boards() to CW provider (cached 1h)
- Extend search_tickets with assigned_to_me, unassigned, board_ids, page, page_size
- New GET /integrations/psa/boards endpoint
- New TicketQueue dashboard component: My Tickets / Unassigned tabs,
  multi-select board filter, Load more pagination, Start Session per ticket
- Add TicketQueue to QuickStartPage after active sessions
- FlowPilotSessionPage auto-starts with ticket context when navigated
  from TicketQueue (psaTicketId + psaTicket in location.state)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/pages/QuickStartPage.tsx

@@ -3,6 +3,7 @@ import { useAuthStore } from '@/store/authStore'
 import { StartSessionInput } from '@/components/dashboard/StartSessionInput'
 import { PendingEscalations } from '@/components/dashboard/PendingEscalations'
 import { ActiveFlowPilotSessions } from '@/components/dashboard/ActiveFlowPilotSessions'
+import { TicketQueue } from '@/components/dashboard/TicketQueue'
 import { PerformanceCards } from '@/components/dashboard/PerformanceCards'
 import { KnowledgeBaseCards } from '@/components/dashboard/KnowledgeBaseCards'
 import { TeamSummary } from '@/components/dashboard/TeamSummary'
@@ -59,6 +60,11 @@ export function QuickStartPage() {
           <ActiveFlowPilotSessions />
         </div>
 
+        {/* Ticket Queue (auto-hides if no PSA connection) */}
+        <div className="mt-8">
+          <TicketQueue />
+        </div>
+
         {/* Dashboard — always visible */}
         <div className="mt-10">
           <SectionLabel>Dashboard</SectionLabel>