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

---------

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/singletons.ts

@@ -37,4 +37,7 @@ if (typeof window !== 'undefined') {
     document.addEventListener('mousemove', (e) =>
       console.log(`await page.mouse.click(${e.clientX}, ${e.clientY})`)
     )
+  ;(window as any).enableFillet = () => {
+    ;(window as any)._enableFillet = true
+  }
 }