feat(ticket): preserve list state across detail navigation

src/app/(modules)/layout.tsx

@@ -11,7 +11,7 @@ const ModulesLayout = ({
 }>) => {
   return (
     <AuthGuard>
-      <SidebarProvider>
+      <SidebarProvider defaultOpen={false}>
         <AppSidebar />
         <main className="flex h-screen min-w-0 flex-1 flex-col overflow-hidden">
           <div className="scroll-stable min-w-0 flex-1 overflow-auto">

src/app/(modules)/ticket/[ticketId]/assign/page.tsx

@@ -4,6 +4,7 @@ import { useState } from 'react';
 import { useParams, useRouter } from 'next/navigation';
 import { AlertTriangle, ArrowLeft, LockKeyhole } from 'lucide-react';
 
+import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { Skeleton } from '@/components/ui/skeleton';
@@ -78,7 +79,7 @@ export default function TicketAssignmentPage() {
     );
   }
 
-  const ticketLabel = overview.ticket_name || overview.id;
+  const ticketName = overview.ticket_name || 'Unnamed ticket';
 
   return (
     <main className="relative z-10 space-y-5 xl:flex xl:h-[calc(100vh-6.5rem)] xl:min-h-0 xl:flex-col xl:gap-5 xl:space-y-0 xl:overflow-hidden">
@@ -93,13 +94,17 @@ export default function TicketAssignmentPage() {
         >
           <ArrowLeft />
         </Button>
-        <div className="min-w-0 space-y-1">
+        <div className="flex min-w-0 flex-wrap items-center gap-2">
           <h1 className="text-2xl font-semibold tracking-tight">
-            Assign ticket
+            Assign Ticket
           </h1>
-          <p className="truncate text-sm text-muted-foreground">
-            Ticket: {ticketLabel}
-          </p>
+          <Badge
+            variant="secondary"
+            className="max-w-full font-mono text-xs"
+            title={ticketName}
+          >
+            <span className="truncate">{ticketName}</span>
+          </Badge>
         </div>
       </header>
 

src/app/(modules)/ticket/[ticketId]/components/TicketDetailHeader.tsx

@@ -14,8 +14,10 @@ import { OpenRepairReviewAction } from './actions/OpenRepairReviewAction';
 
 export function TicketDetailHeader({
   ticket,
+  backHref,
 }: {
   ticket: TicketOverviewDetail;
+  backHref: string;
 }) {
   const router = useRouter();
   const ticketName = ticket.ticket_name || 'Unnamed ticket';
@@ -27,7 +29,7 @@ export function TicketDetailHeader({
           type="button"
           variant="secondary"
           size="icon"
-          onClick={() => router.push('/ticket')}
+          onClick={() => router.push(backHref)}
           aria-label="Back to ticket list"
           className="shrink-0"
         >

src/app/(modules)/ticket/[ticketId]/page.tsx

@@ -1,12 +1,13 @@
 'use client';
 
 import { useState } from 'react';
-import { useParams, useRouter } from 'next/navigation';
+import { useParams, useRouter, useSearchParams } from 'next/navigation';
 import { ArrowLeft } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
 import { PERMISSIONS } from '@/constants/permissions';
 import { PermissionGuard } from '@/guards';
+import { ROUTES } from '@/utils/routes';
 
 import { TicketDetailHeader } from './components/TicketDetailHeader';
 import {
@@ -26,8 +27,20 @@ import {
 
 export default function TicketDetailPage() {
   const router = useRouter();
+  const searchParams = useSearchParams();
   const { ticketId } = useParams() as { ticketId: string };
   const [selectedAssignmentId, setSelectedAssignmentId] = useState<number>();
+  const listParams = new URLSearchParams();
+
+  for (const key of ['page', 'limit', 'segment']) {
+    const value = searchParams.get(key);
+    if (value) listParams.set(key, value);
+  }
+
+  const listSearch = listParams.toString();
+  const ticketListHref = listSearch
+    ? `${ROUTES.TICKET}?${listSearch}`
+    : ROUTES.TICKET;
 
   const overviewQuery = useTicketOverviewQuery(ticketId);
   const overview = overviewQuery.data;
@@ -52,7 +65,7 @@ export default function TicketDetailPage() {
         <Button
           variant="outline"
           size="sm"
-          onClick={() => router.push('/ticket')}
+          onClick={() => router.push(ticketListHref)}
         >
           <ArrowLeft />
           Back to Tickets
@@ -65,7 +78,7 @@ export default function TicketDetailPage() {
     <main className="relative z-10 min-w-0 max-w-full space-y-5 xl:flex xl:h-[calc(100vh-6.5rem)] xl:min-h-0 xl:flex-col xl:gap-5 xl:space-y-0 xl:overflow-hidden">
       <div className="xl:shrink-0">
         {overview ? (
-          <TicketDetailHeader ticket={overview} />
+          <TicketDetailHeader ticket={overview} backHref={ticketListHref} />
         ) : (
           <TicketOverviewHeaderSkeleton />
         )}

src/app/(modules)/ticket/page.tsx

@@ -1,7 +1,7 @@
 'use client';
 
-import { useCallback, useMemo, useState } from 'react';
-import { useRouter } from 'next/navigation';
+import { useCallback, useEffect, useMemo, useRef } from 'react';
+import { usePathname, useRouter, useSearchParams } from 'next/navigation';
 import { PageHeader } from '@/components/page-header';
 import { Ticket } from 'lucide-react';
 import type { TicketListItem } from '@/types';
@@ -17,11 +17,48 @@ import {
   useTicketSummaryQuery,
 } from './hooks/useTicketQueries';
 
+const DEFAULT_PAGE = 1;
+const DEFAULT_LIMIT = 10;
+const PAGE_SIZE_OPTIONS = new Set([10, 20, 40, 50, 100]);
+
+function parsePage(value: string | null) {
+  const page = Number(value);
+  return Number.isInteger(page) && page > 0 ? page : DEFAULT_PAGE;
+}
+
+function parseLimit(value: string | null) {
+  const limit = Number(value);
+  return PAGE_SIZE_OPTIONS.has(limit) ? limit : DEFAULT_LIMIT;
+}
+
 export default function TicketPage() {
   const router = useRouter();
-  const [skip, setSkip] = useState(0);
-  const [limit, setLimit] = useState(10);
-  const [segmentId, setSegmentId] = useState('');
+  const pathname = usePathname();
+  const searchParams = useSearchParams();
+  const searchParamsString = searchParams.toString();
+  const latestSearchParamsRef = useRef(searchParamsString);
+
+  useEffect(() => {
+    latestSearchParamsRef.current = searchParamsString;
+  }, [searchParamsString]);
+
+  const page = parsePage(searchParams.get('page'));
+  const limit = parseLimit(searchParams.get('limit'));
+  const segmentId = searchParams.get('segment') ?? '';
+  const skip = (page - 1) * limit;
+
+  const replaceListParams = useCallback(
+    (update: (params: URLSearchParams) => void) => {
+      const nextParams = new URLSearchParams(latestSearchParamsRef.current);
+      update(nextParams);
+      const nextSearch = nextParams.toString();
+      latestSearchParamsRef.current = nextSearch;
+      router.replace(nextSearch ? `${pathname}?${nextSearch}` : pathname, {
+        scroll: false,
+      });
+    },
+    [pathname, router],
+  );
 
   useTenantTicketTableEvents();
 
@@ -36,16 +73,56 @@ export default function TicketPage() {
   const tickets = ticketsQuery.data?.items ?? [];
   const total = ticketsQuery.data?.total ?? 0;
 
-  const handleSegmentChange = useCallback((nextSegmentId: string) => {
-    setSegmentId(nextSegmentId);
-    setSkip(0);
-  }, []);
+  const handleSegmentChange = useCallback(
+    (nextSegmentId: string) => {
+      replaceListParams((params) => {
+        params.delete('page');
+        if (nextSegmentId) {
+          params.set('segment', nextSegmentId);
+        } else {
+          params.delete('segment');
+        }
+      });
+    },
+    [replaceListParams],
+  );
+
+  const handlePageChange = useCallback(
+    (nextSkip: number) => {
+      const nextPage = Math.floor(nextSkip / limit) + 1;
+      replaceListParams((params) => {
+        if (nextPage === DEFAULT_PAGE) {
+          params.delete('page');
+        } else {
+          params.set('page', String(nextPage));
+        }
+      });
+    },
+    [limit, replaceListParams],
+  );
+
+  const handleLimitChange = useCallback(
+    (nextLimit: number) => {
+      replaceListParams((params) => {
+        params.delete('page');
+        if (nextLimit === DEFAULT_LIMIT) {
+          params.delete('limit');
+        } else {
+          params.set('limit', String(nextLimit));
+        }
+      });
+    },
+    [replaceListParams],
+  );
 
   const handleView = useCallback(
     (ticket: TicketListItem) => {
-      router.push(ROUTES.TICKET_DETAIL(ticket.id));
+      const detailPath = ROUTES.TICKET_DETAIL(ticket.id);
+      router.push(
+        searchParamsString ? `${detailPath}?${searchParamsString}` : detailPath,
+      );
     },
-    [router],
+    [router, searchParamsString],
   );
 
   const toolbar = useMemo(
@@ -81,8 +158,8 @@ export default function TicketPage() {
         skip={skip}
         limit={limit}
         total={total}
-        onPageChange={setSkip}
-        onLimitChange={setLimit}
+        onPageChange={handlePageChange}
+        onLimitChange={handleLimitChange}
         onView={handleView}
       />
     </main>