---
description: Run the offline asset optimization pipeline (gltf-transform Draco + KTX2) on a GLB file. Optionally pre-render a 360 WebP placeholder.
---

Asset path required: $ARGUMENTS  (e.g. `/optimize-asset samples/robot.glb`)

Steps:
1. Confirm `tools/preprocess.mjs` exists; if not, delegate to the `asset-pipeline` agent to build it first.
2. Run the compressor on the input GLB → output to `samples/<name>.optimized.glb`. Print before/after sizes and the reduction %.
3. If a second arg `--prerender` is given, also run the 360° pre-render pipeline to produce `public/previews/<name>.webp`.
4. Verify the optimized GLB still loads in the viewer (load test).

If `gltf-transform` or `toktx` (KTX2 encoder) is missing, report the install command and stop — do not silently skip.