feat: split big file and update agents.md

src/app/campaigns/clean-water/page.tsx

@@ -1,4 +1,4 @@
-import { CampaignDetailPage } from "@/widgets/template-ui";
+import { CampaignDetailPage } from "@/widgets/campaign-detail-page";
 
 export default function Page() {
   return <CampaignDetailPage />;

src/app/campaigns/page.tsx

@@ -1,4 +1,4 @@
-import { CampaignsPage } from "@/widgets/template-ui";
+import { CampaignsPage } from "@/widgets/campaigns-page";
 
 export default function Page() {
   return <CampaignsPage />;