Enabled browser writing assistance across Radial's shared Markdown editor.
- Opted the native textarea fallback into spellchecking and autocorrect.
- Applied the same attributes to CodeMirror's generated contenteditable surface after enhancement.
- Added component coverage proving both the fallback and enhanced editor retain the behavior.
Checks passed: focused MarkdownEditor component suite (25 tests), pnpm lint, pnpm test, pnpm build, and the Impeccable frontend detector.
No known remaining risks. Autocorrect remains browser/platform dependent, as expected for the HTML hint.