feat(server): adapt gemini3.1 preview (#14583)

#### PR Dependency Tree


* **PR #14583** 👈

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 Gemini 3.1 Pro Preview support (text, image, audio) and new
GPT‑5 variants as defaults; centralized persistent telemetry state for
more reliable client identity.

* **UX**
  * Improved model submenu placement in chat preferences.
* More robust mindmap parsing, preview, regeneration and replace
behavior.

* **Chores**
  * Bumped AI SDK and related dependencies.

* **Tests**
  * Expanded/updated tests and increased timeouts for flaky flows.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tests/affine-cloud-copilot/e2e/ai-action/expand-mindmap-node.spec.ts

@@ -33,6 +33,6 @@ test.describe('expand mindmap node', () => {
     await expect(async () => {
       const newChild = await utils.editor.getMindMapNode(page, id!, [0, 0, 0]);
       expect(newChild).toBeDefined();
-    }).toPass({ timeout: 20000 });
+    }).toPass({ timeout: 60000 });
   });
 });