Update rh-test (as of 2025-10-11) (#6044)

## Summary

Tested these changes and confirmed that:
1. Feedback button shows.
2. You can run workflows and switch out models.
3. You can use the mask editor. (thank you @ric-yu for helping me
verify).

## Changes

A lot, please see commits.

Gets us up to date with `main` as of 10-11-2025.

---------

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src/composables/useIntersectionObserver.ts

@@ -1,4 +1,5 @@
-import { type Ref, onBeforeUnmount, ref, watch } from 'vue'
+import { onBeforeUnmount, ref, watch } from 'vue'
+import type { Ref } from 'vue'
 
 interface UseIntersectionObserverOptions extends IntersectionObserverInit {
   immediate?: boolean