…8968)

lodRangeMin and lodRangeMax were added to GSplatComponent in #8908 but
never added to the component system's _properties list. As a result they
were silently ignored when passed to addComponent() and dropped when a
gsplat component was cloned (reset to their defaults of 0 / 99). Add them
alongside the sibling lodBaseDistance/lodMultiplier properties.

Also adds a GSplatComponent test covering init-from-data and clone, and
simplifies the splat-portal and world examples to pass their static LOD
values directly to addComponent.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

* fix: mark live API getters readonly

* test: remove type ergonomics check

Add Font.destroy() so unloading a font asset releases its texture VRAM and
clears the textures from the resource loader cache. FontHandler passes the
loader to the Font so it can clear the cache entries.

Fixes #7033.

Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>

The string-based EventHandler.off(name, callback, scope) is the universal
EventEmitter idiom and dominates usage, but the handle returned by on()/once()
removes exactly one subscription and is faster (no scan of the callback list) -
a benefit previously documented only on the internal offByHandle().

Surface that guidance on the public on()/once()/off() JSDoc so the preferred
removal path is discoverable.

Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

… restore (#8973)

After a graphics context restore the unified-gsplat work buffer render target
comes back blank: its contents are GPU-rendered, not re-uploaded from CPU like
source textures, and nothing re-triggered the rebuild. A non-streaming SOG/PLY
splat therefore disappeared after a context loss/restore.

Add a `devicerestored` handler on GSplatManager that forces a full work-buffer
rebuild and re-sort. It is skipped when the world has streaming octree instances:
those destroy and asynchronously reload their source resources from URL via their
own device-lost handling, so rebuilding here would render from textures that have
been destroyed (and not yet reloaded).

Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

The embedded texture assets created by SogBundleParser retain `file.contents`,
which are views into the downloaded zip archive ArrayBuffer. Null them once the
textures are decoded and uploaded, so the whole archive can be garbage collected.
The decoded ImageBitmap kept by each texture (for re-upload on device context
loss) is a separate copy and is unaffected.

Relates to #8080.

Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>