Fillet UI (#2718)

* draft: fillet ast mod + test

* Kurt's rejig

* playwright

* update button enable logic

* remove fillet button in production build

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* trigger CI

* fix typo

* give a way to turn on fillets

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Co-authored-by: max-mrgrsk <margorskyi@gmail.com>
Co-authored-by: max-mrgrsk <156543465+max-mrgrsk@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/lib/constants.ts

@@ -51,6 +51,7 @@ export const ONBOARDING_PROJECT_NAME = 'Tutorial Project $nn'
 export const KCL_DEFAULT_CONSTANT_PREFIXES = {
   SKETCH: 'sketch',
   EXTRUDE: 'extrude',
+  SEGMENT: 'seg',
 } as const
 /** The default KCL length expression */
 export const KCL_DEFAULT_LENGTH = `5`