Update scene metadata

Update specific metadata fields of an existing scene.

You can update:
- Scene name
- Pinned status
- Collection assignment
- Any combination of the above fields

<Callout type="info">
This endpoint uses partial updates - only provide the fields you want to change. Omitted fields will remain unchanged.
</Callout>

<Callout type="warn">
Moving a scene to a different collection may affect sharing permissions and access rights depending on collection settings.
</Callout>

**Use cases:**
- Renaming scenes
- Organizing scenes by pinning/unpinning
- Moving scenes between collections
- Bulk metadata updates