feat(server): improve context management (#15448)

#### PR Dependency Tree


* **PR #15448** 👈

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 workspace artifact upload, browsing, removal, deduplication, and
library ownership support.
* Copilot now supports scoped document and artifact search, canvas
reading, live editor context, and frontend tools.
* Added scope and focus selectors with source-resolution receipts in
chat.
* Added embedding health, progress, synchronization, and retrieval
capabilities.
* Added BYOK policy visibility, provider restrictions, endpoint dialect
selection, and validation.
* Added delegated editor interactions and userdata document
authorization.

* **Bug Fixes**
* Improved attachment handling, cancellation, access control, retrieval
fallbacks, workspace synchronization, and configuration validation.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tests/affine-cloud-copilot/e2e/utils/editor-utils.ts

@@ -18,6 +18,37 @@ import type {
 import type { GfxModel } from '@blocksuite/std/gfx';
 import { type Page } from '@playwright/test';
 export class EditorUtils {
+  public static async waitForCurrentDocSynced(page: Page) {
+    await page.evaluate(async () => {
+      const [, , workspaceId, docId] = location.pathname.split('/');
+      const workspace = (
+        window as typeof window & {
+          currentWorkspace?: {
+            engine: {
+              doc: {
+                waitForSynced(docId: string, abort: AbortSignal): Promise<void>;
+              };
+            };
+          };
+        }
+      ).currentWorkspace;
+      if (!workspaceId || !docId || !workspace) {
+        throw new Error('Current document is unavailable');
+      }
+      const abort = AbortSignal.timeout(60_000);
+      await Promise.all([
+        workspace.engine.doc.waitForSynced(docId, abort),
+        workspace.engine.doc.waitForSynced('db$docProperties', abort),
+      ]);
+      const response = await fetch(
+        `/api/workspaces/${workspaceId}/docs/${docId}`
+      );
+      if (!response.ok) {
+        throw new Error('Current document could not be persisted');
+      }
+    });
+  }
+
   public static async focusToEditor(page: Page) {
     const title = getBlockSuiteEditorTitle(page);
     await title.focus();
@@ -351,8 +382,7 @@ export class EditorUtils {
         await page.keyboard.press('Enter');
       }
     }
-    // sleep 1 sec to wait the doc sync
-    await page.waitForTimeout(1000);
+    await this.waitForCurrentDocSynced(page);
   }
 
   public static async createTagAndDoc(