v1.4.0

1.4.0 (2026-09-02)

• Merge pull request #1723 from spartan-ng/beta (3103c91), closes #1723
• chore(release): 1.4.0-beta.1 (7e3a496)
• chore(release): 1.4.0-beta.2 (1e222d5)
• chore(release): 1.4.0-beta.3 (32f8ca0)
• chore(release): 1.4.0-beta.4 (3059f67)
• chore(release): 1.4.0-beta.5 (c656101)
• chore(release): backmerge main into beta (71de667)
• chore(release): backmerge main into beta (334443d)
• feat(calendar): add focused date change, disable prev/next button (#1712) (d8ed98a), closes #1712
• feat(chart): add TanStack Charts integration (#1697) (4518445), closes #1697
• feat(questionnaire): add brain, helm, and docs (#1690) (f2fadcf), closes #1690
• feat(slider): add maxStepsBetweenThumbs and preventStepOverThumb (#1625) (0741e9d), closes #1625
• fix(calendar): clamp date selection to prevent overflow in month and year pickers (#1722) (2421d22), closes #1722 #1720
• fix(calendar): make default year range relative (#1721) (81e29c9), closes #1721
• docs: add new contributors to our 300 (4fc7bb4)