LibreChat/client
Marco Beretta 7834ebab33
🕰️ feat: Clock Format and Week Start Preferences (#15121)
* feat: clock format and week start preferences

Times were written in whatever convention the browser locale implied, and the
week always started on Sunday. Neither is right for a large part of the user
base: most of Europe reads a 24-hour clock and starts the week on Monday, and a
user running an English interface in a region that does either is currently
given the American convention with no way to change it.

Two General settings, Clock Format (System / 12-hour / 24-hour) and Week Starts
On (System / Sunday / Monday). Their System branch reads the runtime locale
rather than `i18n.language`, which is normalized down to a translation bundle:
`en-GB` and `en-AU` both become `en`, which is exactly the regional part these
two settings depend on, and reading it would report a 12-hour clock and a Sunday
week to a British user.

Week start is typed on the same 0-6 Sunday-first scale the schedule cadence uses
rather than being narrowed to Sunday/Monday, because the System branch reports
whatever the locale says and several (ar-EG, fa-IR) start the week on Saturday.
Engines without `Intl.Locale.prototype.getWeekInfo` fall back to a short list of
Sunday-first regions with Monday, the ISO 8601 default, otherwise: this is a
display default the toggle can always override, so an imperfect fallback degrades
rather than breaking.

Both settings are stored per browser. They describe how this device reads a
clock, which is a property of where someone is sitting rather than of their
account, and a user who moves between a European desktop and a US phone wants
each to read its own way.

Applied to message timestamps, the schedule dialog and card, key expiry and
refill dates, prompt and agent version dates, memory dates, and project chat
lists. The weekday order also drives the schedule dialog's day pills and the way
a weekly cadence reads back, so a wrap-around selection of Sat+Sun+Mon reads
"Monday, Saturday, Sunday" in a Monday-first week instead of "Sunday, Monday,
Saturday".

Dropdown now names its selected value as well as its field label. `aria-labelledby`
REPLACES the trigger's own text, so pointing it only at the caller's label left
the selected value unannounced, which these two settings are the first consumers
to hit.

* fix: teach the week-start fallback the Saturday-first regions

The no-week-data heuristic could only answer Sunday or Monday, folding
ar-EG to Sunday and fa-IR to Monday when CLDR says both start on
Saturday, and the selector offers no explicit Saturday override to
recover with. It now carries CLDR's Saturday-first territories, and the
UAE moves off the Sunday list to the Monday default, where CLDR put it
when its weekend moved to Sat-Sun. The fallback tests delete the
engine's week data for their duration, so they exercise the heuristic
on every engine instead of skipping wherever getWeekInfo exists.

* fix: infer likely regions for bare language tags and stop rebuilding clock formatters

A runtime that reports a language-only locale (bare ar or fa) carried no
region for the week-start heuristic, so those users fell to the Monday
default even though maximize() knows their likely region starts the week
on Saturday. The heuristic now maximizes before defaulting.

The runtime locale and each locale's meridiem answer are also cached at
module scope: every message timestamp mounts useClockFormat, so the
uncached path built a fresh Intl.DateTimeFormat per rendered message,
hundreds in a long conversation, even when the preference ignores the
locale entirely.

* fix: keep the Maldives on Friday in the week-start fallback

CLDR's lone Friday-first territory was in neither fallback set, so
dv-MV (and bare dv, which maximizes to MV) fell to Monday on engines
without week data, with no Friday override in the selector to recover
with. The three per-day sets consolidate into one region-to-day map.

* fix: complete the Sunday-first fallback from CLDR week data

The hand-picked ten Sunday-first regions left the System preference on
Monday for en-IN, id-ID, bn-BD, ur-PK, th-TH and the rest of the long
tail on engines without week data. The list is now every territory whose
und-XX week does not start Monday per CLDR, deprecated codes included,
with a note on how to regenerate it when CLDR moves a territory.

* fix: mock message context across markdown test suites and prevent global plugin cache leak
2026-08-23 18:41:14 -04:00
..
public 🪢 feat: Langfuse Fanout Connection Setting (#14108) 2026-07-29 18:33:10 -04:00
scripts
src 🕰️ feat: Clock Format and Week Start Preferences (#15121) 2026-08-23 18:41:14 -04:00
sw
test 🔒 chore: Upgrade react-router-dom to v7.18.2 (security) (#14582) 2026-08-01 17:19:52 -04:00
babel.config.cjs
check_updates.sh
index.html
jest.config.cjs 🚀 chore: Prepare v0.8.8-rc1 (#14394) 2026-08-14 03:24:59 -04:00
jest.resolver.cjs
nginx.conf
package.json 🚀 chore: Prepare v0.8.8-rc1 (#14394) 2026-08-14 03:24:59 -04:00
postcss.config.cjs
tailwind.config.cjs feat: Context Gauge Hover Reveal and Breakdown Motion Polish (#15038) 2026-08-21 11:34:36 -04:00
tsconfig.json
vite.config.ts 🎨 refactor: adopt the @librechat/client design system (semantic color tokens + component migration) (#13879) 2026-08-06 09:15:17 -04:00