feat: reduce backend (#14251)

#### PR Dependency Tree


* **PR #14251** 👈

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**
* Current user profile now exposes access tokens, revealed tokens, and
detailed calendar accounts/subscriptions.
* Workspace now exposes permissions, calendars, calendar events, and a
workspace-scoped blob upload part URL.
  * New document-update mutation for applying doc updates.

* **API Changes**
  * validateAppConfig is now a query (mutation deprecated).
* Several legacy top-level calendar/blob endpoints deprecated in favor
of user/workspace fields.

* **Refactor**
* Calendar, blob-upload and access-token surfaces reorganized to use
user/workspace-centric fields.

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settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/common/nbstore/src/impls/cloud/blob.ts

@@ -5,7 +5,7 @@ import {
   completeBlobUploadMutation,
   createBlobUploadMutation,
   deleteBlobMutation,
-  getBlobUploadPartUrlMutation,
+  getBlobUploadPartUrlQuery,
   listBlobsQuery,
   releaseDeletedBlobsMutation,
   setBlobMutation,
@@ -265,16 +265,16 @@ export class CloudBlobStorage extends BlobStorageBase {
       const chunk = data.subarray(start, end);
 
       const part = await this.connection.gql({
-        query: getBlobUploadPartUrlMutation,
+        query: getBlobUploadPartUrlQuery,
         variables: { workspaceId: this.options.id, key, uploadId, partNumber },
         context: { signal },
       });
 
       const res = await this.fetchWithTimeout(
-        part.getBlobUploadPartUrl.uploadUrl,
+        part.workspace.blobUploadPartUrl.uploadUrl,
         {
           method: 'PUT',
-          headers: part.getBlobUploadPartUrl.headers ?? undefined,
+          headers: part.workspace.blobUploadPartUrl.headers ?? undefined,
           body: chunk,
           signal,
           timeout: UPLOAD_REQUEST_TIMEOUT,