feat(server): get recently updated docs (#12861)

close AI-218



#### PR Dependency Tree


* **PR #12861** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Added a "Recently Updated Documents" feature, allowing users to view a
paginated list of the most recently updated documents within a
workspace.
- Document metadata now includes a "title" field for easier
identification.
- **Tests**
- Introduced new end-to-end tests to verify the recently updated
documents query and its pagination behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/__tests__/e2e/doc/resolver.spec.ts

@@ -0,0 +1,62 @@
+import { getRecentlyUpdatedDocsQuery } from '@affine/graphql';
+
+import { Mockers } from '../../mocks';
+import { app, e2e } from '../test';
+
+e2e('should get recently updated docs', async t => {
+  const owner = await app.signup();
+
+  const workspace = await app.create(Mockers.Workspace, {
+    owner: { id: owner.id },
+  });
+
+  const docSnapshot1 = await app.create(Mockers.DocSnapshot, {
+    workspaceId: workspace.id,
+    user: owner,
+  });
+  const doc1 = await app.create(Mockers.DocMeta, {
+    workspaceId: workspace.id,
+    docId: docSnapshot1.id,
+    title: 'doc1',
+  });
+
+  const docSnapshot2 = await app.create(Mockers.DocSnapshot, {
+    workspaceId: workspace.id,
+    user: owner,
+  });
+  const doc2 = await app.create(Mockers.DocMeta, {
+    workspaceId: workspace.id,
+    docId: docSnapshot2.id,
+    title: 'doc2',
+  });
+
+  const docSnapshot3 = await app.create(Mockers.DocSnapshot, {
+    workspaceId: workspace.id,
+    user: owner,
+  });
+  const doc3 = await app.create(Mockers.DocMeta, {
+    workspaceId: workspace.id,
+    docId: docSnapshot3.id,
+    title: 'doc3',
+  });
+
+  const {
+    workspace: { recentlyUpdatedDocs },
+  } = await app.gql({
+    query: getRecentlyUpdatedDocsQuery,
+    variables: {
+      workspaceId: workspace.id,
+      pagination: {
+        first: 10,
+      },
+    },
+  });
+
+  t.is(recentlyUpdatedDocs.totalCount, 3);
+  t.is(recentlyUpdatedDocs.edges[0].node.id, doc3.docId);
+  t.is(recentlyUpdatedDocs.edges[0].node.title, doc3.title);
+  t.is(recentlyUpdatedDocs.edges[1].node.id, doc2.docId);
+  t.is(recentlyUpdatedDocs.edges[1].node.title, doc2.title);
+  t.is(recentlyUpdatedDocs.edges[2].node.id, doc1.docId);
+  t.is(recentlyUpdatedDocs.edges[2].node.title, doc1.title);
+});