* ♻️ Factor GL context initialization out of canvas init
- fixes setting of gl-context-handle to be after _init so an exception
does not leave invalid state behind.
- api.init-canvas-context uses a new webgl.init-context!
- this decouples config from init, so we can reuse it in benchmarks
- some helpers move to the webgl ns
AI-assisted-by: muse-spark-1.3, deepseek-flash, glm-5.3
* 🐛 Release acquired GL context when renderer init fails
- Properly release resources if init fails
- Rethrown exceptions with the original cause
- Fix vacuous check in clear-canvas
AI-assisted-by: muse-spark-1.3, deepseek-flash, glm-5.3
* ✨ Test webgl context init and release
AI-assisted-by: muse-spark, glm-5.3
* 💄 Address review comments
* 💄 Drop `!` from some function names
