6 Playwright tests covering the full flow:
- Create Type dialog opens from + button on Types section
- Create button disabled when name is empty
- Creating a type adds it to sidebar and opens it in editor
- Custom types appear in Create Note dialog type selector
- Can create instances of custom types
- Cancel closes dialog without side effects
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
