fix(flowpilot): fix 4 Phase 2 escalation bugs + update Tailwind version in CLAUDE.md

- Fix escalation status mismatch: hook set 'escalated' but backend returns
  'requesting_escalation'
- Fix list_sessions to include sessions picked up by Engineer B via
  escalation_package->>'picked_up_by' JSONB query
- Fix sidebar escalation icon color: was Tailwind class 'text-amber-400'
  passed to style={{color}}, now hex '#fbbf24'
- Replace window.location.reload() after ticket linking with
  onReloadSession callback to preserve session state
- Update CLAUDE.md: Tailwind CSS v3 → v4 (@tailwindcss/vite, CSS-only config)

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

frontend/src/components/flowpilot/FlowPilotSession.tsx

@@ -35,6 +35,7 @@ interface FlowPilotSessionProps {
   onPause?: () => Promise<void>
   onResume?: () => Promise<void>
   onRate: (rating: number) => void
+  onReloadSession?: () => Promise<void>
 }
 
 export function FlowPilotSession({
@@ -54,6 +55,7 @@ export function FlowPilotSession({
   onPause,
   onResume,
   onRate,
+  onReloadSession,
 }: FlowPilotSessionProps) {
   const scrollRef = useRef<HTMLDivElement>(null)
   const [showTicketPicker, setShowTicketPicker] = useState(false)
@@ -87,7 +89,9 @@ export function FlowPilotSession({
       })
       toast.success(`Linked to ticket #${ticketId}`)
       // Reload session to get updated ticket_data
-      window.location.reload()
+      if (onReloadSession) {
+        await onReloadSession()
+      }
     } catch {
       toast.error('Failed to link ticket')
     } finally {