Feat: Add agent page. #3221 (#5179)

### What problem does this PR solve?

Feat: Add agent page. #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/hooks/logic-hooks/navigate-hooks.ts

     navigate(Routes.Chat);
   }, [navigate]);
 
+  const navigateToAgentList = useCallback(() => {
+    navigate(Routes.Agents);
+  }, [navigate]);
+
+  const navigateToAgent = useCallback(() => {
+    navigate(Routes.Agent);
+  }, [navigate]);
+
   const navigateToChunkParsedResult = useCallback(
     (id: string, knowledgeId?: string) => () => {
       navigate(
     navigateToChunkParsedResult,
     getQueryString,
     navigateToChunk,
+    navigateToAgentList,
+    navigateToAgent,
   };
 };

web/src/layouts/next-header.tsx

       { path: Routes.Datasets, name: t('knowledgeBase'), icon: Library },
       { path: Routes.Chats, name: t('chat'), icon: MessageSquareText },
       { path: Routes.Search, name: t('search'), icon: Search },
-      { path: Routes.Agent, name: t('flow'), icon: Cpu },
+      { path: Routes.Agents, name: t('flow'), icon: Cpu },
       { path: Routes.Files, name: t('fileManager'), icon: File },
     ],
     [t],

web/src/pages/agent/index.tsx

+import { PageHeader } from '@/components/page-header';
+import { Button } from '@/components/ui/button';
+import { useNavigatePage } from '@/hooks/logic-hooks/navigate-hooks';
+import { Trash2 } from 'lucide-react';
+
 export default function Agent() {
-  return <div>Agent</div>;
+  const { navigateToAgentList } = useNavigatePage();
+
+  return (
+    <section>
+      <PageHeader back={navigateToAgentList} title="Agent 01">
+        <div className="flex items-center gap-2">
+          <Button variant={'icon'} size={'icon'}>
+            <Trash2 />
+          </Button>
+          <Button variant={'outline'} size={'sm'}>
+            Save
+          </Button>
+          <Button variant={'outline'} size={'sm'}>
+            API
+          </Button>
+          <Button variant={'outline'} size={'sm'}>
+            Run app
+          </Button>
+
+          <Button variant={'tertiary'} size={'sm'}>
+            Publish
+          </Button>
+        </div>
+      </PageHeader>
+    </section>
+  );
 }

web/src/pages/agents/agent-card.tsx

+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent } from '@/components/ui/card';
+import { useNavigatePage } from '@/hooks/logic-hooks/navigate-hooks';
+import { IFlow } from '@/interfaces/database/flow';
+import { formatPureDate } from '@/utils/date';
+import { ChevronRight, Trash2 } from 'lucide-react';
+
+interface IProps {
+  data: IFlow;
+}
+
+export function AgentCard({ data }: IProps) {
+  const { navigateToAgent } = useNavigatePage();
+
+  return (
+    <Card className="bg-colors-background-inverse-weak  border-colors-outline-neutral-standard">
+      <CardContent className="p-4">
+        <div className="flex justify-between mb-4">
+          {data.avatar ? (
+            <div
+              className="w-[70px] h-[70px] rounded-xl bg-cover"
+              style={{ backgroundImage: `url(${data.avatar})` }}
+            />
+          ) : (
+            <Avatar className="w-[70px] h-[70px]">
+              <AvatarImage src="https://github.com/shadcn.png" />
+              <AvatarFallback>CN</AvatarFallback>
+            </Avatar>
+          )}
+        </div>
+        <h3 className="text-xl font-bold mb-2">{data.title}</h3>
+        <p>An app that does things An app that does things</p>
+        <section className="flex justify-between pt-3">
+          <div>
+            Search app
+            <p className="text-sm opacity-80">
+              {formatPureDate(data.update_time)}
+            </p>
+          </div>
+          <div className="space-x-2">
+            <Button variant="icon" size="icon" onClick={navigateToAgent}>
+              <ChevronRight className="h-6 w-6" />
+            </Button>
+            <Button variant="icon" size="icon">
+              <Trash2 />
+            </Button>
+          </div>
+        </section>
+      </CardContent>
+    </Card>
+  );
+}

web/src/pages/agents/index.tsx

+import ListFilterBar from '@/components/list-filter-bar';
+import { useFetchFlowList } from '@/hooks/flow-hooks';
+import { Plus } from 'lucide-react';
+import { AgentCard } from './agent-card';
+
+export default function Agent() {
+  const { data } = useFetchFlowList();
+
+  return (
+    <section>
+      <div className="px-8 pt-8">
+        <ListFilterBar title="Agents">
+          <Plus className="mr-2 h-4 w-4" />
+          Create app
+        </ListFilterBar>
+      </div>
+      <div className="grid gap-6 sm:grid-cols-1 md:grid-cols-2 lg:grid-cols-4 xl:grid-cols-6 2xl:grid-cols-8 max-h-[84vh] overflow-auto px-8">
+        {data.map((x) => {
+          return <AgentCard key={x.id} data={x}></AgentCard>;
+        })}
+      </div>
+    </section>
+  );
+}

web/src/routes.ts

   DatasetBase = '/dataset',
   Dataset = `${Routes.DatasetBase}${Routes.DatasetBase}`,
   Agent = '/agent',
+  Agents = '/agents',
   Search = '/next-search',
   Chats = '/next-chats',
   Chat = '/next-chat',
     ],
   },
   {
-    path: Routes.Agent,
+    path: Routes.Agents,
     layout: false,
     component: '@/layouts/next',
     routes: [
       {
-        path: Routes.Agent,
-        component: `@/pages${Routes.Agent}`,
+        path: Routes.Agents,
+        component: `@/pages${Routes.Agents}`,
       },
     ],
   },
+  {
+    path: Routes.Agent,
+    layout: false,
+    component: `@/pages${Routes.Agent}`,
+  },
   {
     path: Routes.Files,
     layout: false,