feat: improve skill scores across 5 Three.js skills

[popey]

Hullo 👋 happy Friday!

I ran your skills through tessl skill review at work and found some minor targeted improvements.

Here's the before/after in text form:

Skill	Before	After	Change
threejs-animation	94%	99%	+5%
threejs-lighting	95%	100%	+5%
threejs-loaders	95%	99%	+4%
threejs-materials	95%	99%	+4%
threejs-textures	89%	99%	+10%

The other five skills (fundamentals, geometry, interaction, postprocessing, shaders) already scored 100% — no changes needed there.

Changes summary

threejs-animation

• Added a Troubleshooting section covering common issues: animations not playing, no visible movement, incorrect bone targeting, and weight normalisation — with practical debugging code for each

threejs-lighting

• Expanded frontmatter description with specific light types (directional, point, spot, hemisphere, area), shadow configuration details (bias, PCF/VSM), HDR environment maps, and performance techniques

threejs-loaders

• Rewrote description from category nouns to action-oriented phrasing
• Restructured Draco and KTX2 sections with numbered workflow steps, extracted decoder/transcoder URLs into named constants, and added validation fetch calls

threejs-materials

• Rewrote description to use action verbs ("Creates and configures...", "Applies textures...") instead of a passive category list

threejs-textures

• Rewrote description with concrete action verbs (load, apply, configure UV mapping, set up environment maps)
• Added Quick Reference table for commonly used texture properties
• Added CubeCamera update frequency guidance with throttling code example
• Added GPU memory release verification section with renderer.info.memory.textures checking
• Completed the CubeCamera animate function with working code

Honest disclosure — I work at @tesslio where we build tooling around skills like these. Not a pitch — just saw room for improvement and wanted to contribute.

If you want to run evals yourself, just npm install @tessl/cli then run tessl skill review path/to/your/SKILL.md, and click here to find out more.

Thanks in advance 🙏