fix(tickets): fix permissions toast, board fallback, assignment search, remove load more

- list_resources: return [] on PSAError instead of 502 — stops global interceptor
  toast when CW API key lacks ticket members permission (Lesson 111)
- list_boards/list_priorities: add warning logging so Railway logs reveal the
  root cause when CW permissions are missing
- TicketsPage: derive board options from ticket search results when listBoards
  returns empty (CW permissions fallback)
- TicketFilterBar: replace assignment <select> with searchable member picker —
  fixed options (All/Mine/Unassigned) + text-filtered member dropdown
- TicketQueue: remove Load More / infinite scroll; page now exists at /tickets

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

frontend/src/components/dashboard/TicketQueue.tsx

@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef, useCallback } from 'react'
 import { useNavigate, Link } from 'react-router-dom'
-import { Ticket, ChevronDown, Check, Loader2, AlertCircle } from 'lucide-react'
+import { Ticket, ChevronDown, Check, AlertCircle } from 'lucide-react'
 import { integrationsApi } from '@/api/integrations'
 import type { PSABoard, PSATicketSearchResult } from '@/types/integrations'
 import { cn } from '@/lib/utils'
@@ -193,10 +193,7 @@ export function TicketQueue() {
   const [selectedBoardIds, setSelectedBoardIds] = useState<number[]>([])
   const [activeTab, setActiveTab] = useState<Tab>('mine')
   const [tickets, setTickets] = useState<PSATicketSearchResult[]>([])
-  const [page, setPage] = useState(1)
-  const [hasMore, setHasMore] = useState(false)
   const [loading, setLoading] = useState(false)
-  const [loadingMore, setLoadingMore] = useState(false)
   const [error, setError] = useState<string | null>(null)
 
   // Check connection on mount
@@ -227,9 +224,9 @@ export function TicketQueue() {
   }, [hasConnection])
 
   const fetchTickets = useCallback(
-    async (tab: Tab, boardIds: number[], pageNum: number, append: boolean) => {
+    async (tab: Tab, boardIds: number[]) => {
       const params: Parameters<typeof integrationsApi.searchTicketsQueue>[0] = {
-        page: pageNum,
+        page: 1,
         page_size: PAGE_SIZE,
       }
       if (tab === 'mine') {
@@ -243,12 +240,7 @@ export function TicketQueue() {
 
       try {
         const results = await integrationsApi.searchTicketsQueue(params)
-        if (append) {
-          setTickets((prev) => [...prev, ...results.items])
-        } else {
-          setTickets(results.items)
-        }
-        setHasMore(results.items.length === PAGE_SIZE)
+        setTickets(results.items)
         setError(null)
       } catch {
         setError('Failed to load tickets. Check your PSA connection.')
@@ -261,21 +253,11 @@ export function TicketQueue() {
   useEffect(() => {
     if (!hasConnection) return
     if (activeTab === 'mine' && hasMemberMapping !== true) return
-    setPage(1)
     setTickets([])
-    setHasMore(false)
     setLoading(true)
-    fetchTickets(activeTab, selectedBoardIds, 1, false).finally(() => setLoading(false))
+    fetchTickets(activeTab, selectedBoardIds).finally(() => setLoading(false))
   }, [activeTab, selectedBoardIds, hasConnection, hasMemberMapping, fetchTickets])
 
-  const handleLoadMore = async () => {
-    const nextPage = page + 1
-    setPage(nextPage)
-    setLoadingMore(true)
-    await fetchTickets(activeTab, selectedBoardIds, nextPage, true)
-    setLoadingMore(false)
-  }
-
   const handleStartSession = (ticket: PSATicketSearchResult) => {
     navigate('/pilot', {
       state: {
@@ -368,7 +350,7 @@ export function TicketQueue() {
               <TicketRow
                 key={ticket.id}
                 ticket={ticket}
-                isLast={i === tickets.length - 1 && !hasMore}
+                isLast={i === tickets.length - 1}
                 onStartSession={handleStartSession}
               />
             ))}
@@ -404,28 +386,6 @@ export function TicketQueue() {
           </div>
         )}
 
-        {/* Load more */}
-        {!error && !loading && hasMore && (
-          <div
-            className="px-5 py-3"
-            style={{ borderTop: '1px solid var(--color-border-default)' }}
-          >
-            <button
-              onClick={handleLoadMore}
-              disabled={loadingMore}
-              className="flex w-full items-center justify-center gap-2 rounded-lg border border-[rgba(255,255,255,0.08)] bg-transparent py-2 text-xs text-muted-foreground hover:text-foreground hover:border-[rgba(255,255,255,0.14)] disabled:opacity-50 transition-colors"
-            >
-              {loadingMore ? (
-                <>
-                  <Loader2 size={12} className="animate-spin" />
-                  Loading...
-                </>
-              ) : (
-                'Load more'
-              )}
-            </button>
-          </div>
-        )}
       </div>
     </div>
   )