chore(main): release 2.9.0

[github-actions]

🤖 I have created a release beep boop

2.9.0 (2026-08-24)

Features

• core: add day-range and day-shift drag helpers (18abab4)
• dom: add date selection and drag-to-create to the year grid (ad62176)
• dom: support selecting, creating and moving events on the month grid (1d36e7a)
• month: hide the built-in title, and add cell press and drag support (#45) (78da855)
• move time-grid events past midnight (#48) (2d81c7e)
• native: add date selection and drag-to-create to the year grid (30350a8)
• native: forward selection and drag handlers through the month pager (be9d056)
• native: support selecting, creating and moving events on the month grid (821960c)
• wire month and year selection and drag handlers through Calendar (6136bfb)
• year: add date selection, drag-to-select and drag-to-create (#47) (f93393a)

Bug Fixes

• dom: harden the year grid's drag-to-select (c61d11c)
• dom: keep disabled days out of a month sweep and drop (b3215ac)
• native: harden the year grid's drag-to-select (dd4cc43)
• native: repaint cached month pages when the sweep props change (a0f6943)

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[github-actions]

🤖 Created releases:

• v2.9.0

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