v0.43.1

Chart axes read correctly in every admin language, Chinese pages render in Simplified glyphs, and dependencies pick up two security patches. No API change.

• Chart axis labels follow the locale. The x-axis glued a translated month name onto a day number, so Chinese read "7月 16" and Swedish and Indonesian put the month first. Labels now come from Intl.DateTimeFormat, like the tooltips. Monthly labels carry the full year, an axis that crosses a year boundary names the year where it changes, and a label that would collide with "Today" drops out together with its dot. A bucket label in no known shape prints as received instead of breaking the analytics panel.
• Chinese admin pages declare lang="zh-Hans". They used to declare zh, so a system whose default Han font is Traditional or Japanese drew the Simplified strings in the wrong glyph forms.
• Security patches. hono 4.13.14 and zod 4.6.7 close published advisories. The other app dependencies move to their latest releases.
• The twelve unused month.* translation keys are gone from all four locales.
• The version bump refreshes the recorded spec hash in all three SDKs, which ship no code change in this release.