Every user-visible date now goes through web/src/lib/datetime.ts, driven by
three settings (Settings > General > Locale):
- Language & region: automatic, or any of the 618 locales CLDR has data for,
each named in its own language and script (web/src/lib/locales.ts, generated
by probing Intl over the subtag space).
- Date format: automatic (locale order), 22.11.2025, 22/11/2025, 11/22/2025,
or ISO 8601 2025-11-22.
- Time format: automatic (locale), 24-hour, or 12-hour.
Automatic takes the locale Stalwart has for the account, read best-effort at
login via x:Account/get (urn:stalwart:jmap) and passed to the client in the
session; servers without the capability, or that deny sysAccountGet to a
regular user, fall back to the browser locale. POSIX forms are normalised
(de_DE.UTF-8 -> de-DE) and script modifiers kept (sr_RS@latin -> sr-Latn-RS,
uz_UZ@cyrillic -> uz-Cyrl-UZ), while dialect/variant/currency modifiers are
dropped and a script the locale already implies is not appended.
Numerals follow the locale (22.11.2025 renders as Arabic-Indic digits under
ar-EG); ISO 8601 is the exception and pins date and clock to Latin digits so
one line never mixes digit systems.
Rewired: message list and headers, quoted reply headers, calendar (titles,
weekday and hour gutters, mini calendar, agenda, popovers, invite cards,
free/busy), contacts, files, sessions. No raw toLocale*String date calls are
left in web/src.
Native <input type="datetime-local"> pickers always follow the browser locale
and cannot be restyled by a page, so the out-of-office fields echo the entered
instant in the chosen format underneath.
Also: month-grid day labels no longer wrap when they hold a date, and the mock
server serves x:Account/get (MOCK_LOCALE, default en_US).
Closes#1
- Move the expand chevron into a gutter left of the folder icon so folders
with and without subfolders line up on their icon; labels share the column.
- Add "Mark all as read, incl. subfolders" to the folder context menu, with
the affected count and a per-folder fallback for servers without filter
operators.
- Re-measure the virtualised message list when row height changes.
- Mock: seed unread mail in a subfolder.
The LICENSE file only carried the short "how to apply" notice, not the
license itself, so it wasn't a valid GPLv3 distribution and license
detection tools couldn't identify it. Replace it with the canonical
674-line GNU GPL v3 text (sha256 8ceb4b9e...), and move the project
copyright line plus the "version 3 or any later version" grant into the
README, which now matches package.json's GPL-3.0-or-later.
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