fix: add adminGetVideo/adminGetArticle queries to fix 404 on edit pages

The edit page loaders were calling adminListVideos/adminListArticles with the
old pre-pagination signatures and filtering by ID client-side, which broke
after pagination limited results to 50. Now fetches the single item by ID
directly via new adminGetVideo and adminGetArticle backend queries.

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

packages/backend/src/graphql/resolvers/articles.ts

@@ -96,6 +96,26 @@ builder.queryField("article", (t) =>
   }),
 );
 
+builder.queryField("adminGetArticle", (t) =>
+  t.field({
+    type: ArticleType,
+    nullable: true,
+    args: {
+      id: t.arg.string({ required: true }),
+    },
+    resolve: async (_root, args, ctx) => {
+      requireAdmin(ctx);
+      const article = await ctx.db
+        .select()
+        .from(articles)
+        .where(eq(articles.id, args.id))
+        .limit(1);
+      if (!article[0]) return null;
+      return enrichArticle(ctx.db, article[0]);
+    },
+  }),
+);
+
 // ─── Admin queries & mutations ────────────────────────────────────────────────
 
 builder.queryField("adminListArticles", (t) =>

packages/backend/src/graphql/resolvers/videos.ts

@@ -188,6 +188,22 @@ builder.queryField("video", (t) =>
   }),
 );
 
+builder.queryField("adminGetVideo", (t) =>
+  t.field({
+    type: VideoType,
+    nullable: true,
+    args: {
+      id: t.arg.string({ required: true }),
+    },
+    resolve: async (_root, args, ctx) => {
+      requireAdmin(ctx);
+      const video = await ctx.db.select().from(videos).where(eq(videos.id, args.id)).limit(1);
+      if (!video[0]) return null;
+      return enrichVideo(ctx.db, video[0]);
+    },
+  }),
+);
+
 builder.queryField("videoLikeStatus", (t) =>
   t.field({
     type: VideoLikeStatusType,

packages/frontend/src/lib/services.ts

@@ -1339,6 +1339,51 @@ export async function adminListVideos(
   });
 }
 
+const ADMIN_GET_VIDEO_QUERY = gql`
+  query AdminGetVideo($id: String!) {
+    adminGetVideo(id: $id) {
+      id
+      slug
+      title
+      description
+      image
+      movie
+      tags
+      upload_date
+      premium
+      featured
+      likes_count
+      plays_count
+      models {
+        id
+        artist_name
+        slug
+        avatar
+      }
+      movie_file {
+        id
+        filename
+        mime_type
+        duration
+      }
+    }
+  }
+`;
+
+export async function adminGetVideo(
+  id: string,
+  fetchFn?: typeof globalThis.fetch,
+  token?: string,
+): Promise<Video | null> {
+  return loggedApiCall("adminGetVideo", async () => {
+    const client = token ? getAuthClient(token) : getGraphQLClient(fetchFn);
+    const data = await client.request<{ adminGetVideo: Video | null }>(ADMIN_GET_VIDEO_QUERY, {
+      id,
+    });
+    return data.adminGetVideo;
+  });
+}
+
 const CREATE_VIDEO_MUTATION = gql`
   mutation CreateVideo(
     $title: String!
@@ -1543,6 +1588,44 @@ export async function adminListArticles(
   });
 }
 
+const ADMIN_GET_ARTICLE_QUERY = gql`
+  query AdminGetArticle($id: String!) {
+    adminGetArticle(id: $id) {
+      id
+      slug
+      title
+      excerpt
+      content
+      image
+      tags
+      publish_date
+      category
+      featured
+      author {
+        id
+        artist_name
+        slug
+        avatar
+      }
+    }
+  }
+`;
+
+export async function adminGetArticle(
+  id: string,
+  fetchFn?: typeof globalThis.fetch,
+  token?: string,
+): Promise<Article | null> {
+  return loggedApiCall("adminGetArticle", async () => {
+    const client = token ? getAuthClient(token) : getGraphQLClient(fetchFn);
+    const data = await client.request<{ adminGetArticle: Article | null }>(
+      ADMIN_GET_ARTICLE_QUERY,
+      { id },
+    );
+    return data.adminGetArticle;
+  });
+}
+
 const CREATE_ARTICLE_MUTATION = gql`
   mutation CreateArticle(
     $title: String!

packages/frontend/src/routes/admin/articles/[id]/+page.server.ts

@@ -1,16 +1,17 @@
-import { adminListArticles, adminListUsers } from "$lib/services";
+import { adminGetArticle, adminListUsers } from "$lib/services";
 import { error } from "@sveltejs/kit";
 
 export async function load({ params, fetch, cookies }) {
   const token = cookies.get("session_token") || "";
-  const [articles, modelsResult] = await Promise.all([
+  const [article, modelsResult] = await Promise.all([
-    adminListArticles(fetch, token).catch(() => []),
+    adminGetArticle(params.id, fetch, token).catch(() => null),
     adminListUsers({ role: "model", limit: 200 }, fetch, token).catch(() => ({
       items: [],
       total: 0,
     })),
   ]);
-  const article = articles.find((a) => a.id === params.id);
+
   if (!article) throw error(404, "Article not found");
+
   return { article, authors: modelsResult.items };
 }

packages/frontend/src/routes/admin/videos/[id]/+page.server.ts

@@ -1,15 +1,14 @@
-import { adminListVideos, getModels } from "$lib/services";
+import { adminGetVideo, getModels } from "$lib/services";
 import { error } from "@sveltejs/kit";
 
 export async function load({ params, fetch, cookies }) {
   const token = cookies.get("session_token") || "";
-  const [allVideos, models] = await Promise.all([
+  const [video, modelsResult] = await Promise.all([
-    adminListVideos(fetch, token).catch(() => []),
+    adminGetVideo(params.id, fetch, token).catch(() => null),
-    getModels(fetch).catch(() => []),
+    getModels({}, fetch).catch(() => ({ items: [], total: 0 })),
   ]);
 
-  const video = allVideos.find((v) => v.id === params.id);
   if (!video) throw error(404, "Video not found");
 
-  return { video, models };
+  return { video, models: modelsResult.items };
 }