i18n: Hebrew on one line, its sign held left, CLDR's short years

gpui 0.2.2 wraps shaped glyphs in the order they are drawn, so a
right-to-left line that wraps comes out garbled. The demo's Hebrew
lines are Ellipses, which cut by characters, and an Ellipsis now sits
by its text's alignment, so a short line under text_right lies at the
right; the editor's completion details take the side they ask for. A
right-to-left locale leads a minus with a left-to-right mark, as CLDR
does, so the sign stays at the digits' left inside Hebrew. en-US and
de-DE write CLDR's two-digit year. The repeated-key and second-catalog
guards have tests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks/ch31-43.md

@@ -275,8 +275,8 @@
 
 - [x] I18nProvider → `i18n::I18n`, a gpui global: the shown locale and one catalog per locale
 - [x] Trans / LocalizedText → `I18n::text`, a message with its `{name}` arguments filled
-- [x] LocaleNumber / LocaleDate → `Locale::number` and `Locale::date`, CLDR's separators and short dates
-- [x] RTL layout — proven: `Direction::row` mirrors a stack and `Direction::align` sets its text's side; Ely's other components stay left to right
+- [x] LocaleNumber / LocaleDate → `Locale::number` and `Locale::date`, CLDR's separators, right-to-left sign and short dates
+- [x] RTL layout — proven: `Direction::row` mirrors a stack and `Direction::align` sets its text's side; a right-to-left line stays one `Ellipsis`, since gpui wraps glyphs in drawn order; Ely's other components stay left to right
 
 ## T40b a11y — `src/i18n`