chore: release 0.91.1

[gray-bot]

🤖 I have created a release beep boop

0.91.1 (2026-02-06)

Features

• builders,daffio: generate sitemap (#4152) (c6b9e65)
• design, demo: deprecate @daffodil/design/link-set and replace usage (#4295) (d75d063)
• design: add isOpen property to menu activator to track the menu's open state (#4299) (465180b)
• design: add keyboard support and basic aria roles for menu (#3998) (8100a38)
• design: automatically add anchor link and copy URL button to article headings (#4260) (39cfdd4)
• design: create DaffSpinnerComponent to replace DaffLoadingIconComponent (#4316) (4a14372)
• docs-util,daffio: group API symbols by role in list (#4262) (5103bbc)
• docs,dgeni,daffio: add storefront design docs (#4269) (bd33c14)
• sassdoc: separate items by group (#4300) (836b998)

Bug Fixes

• design: close menu on menu item click (#4297) (bd579a1)
• design: menu backdrop click doesn't update state (#4298) (d72f004)
• design: skip code copy button for article encapsulated components (#4277) (d625359)
• dgeni: [@docs-private](https://github.com/docs-private) symbols appear in API list (#4293) (4d0fce6)
• dgeni: members deeply nested in inheritance chain not hoisted (#4240) (7139f8c)

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