Add Hungarian localization and fix responsive settings layout (#146)

* Add a Polish interface

- pl.tsv: the full catalog (287 rows), written clean-room from the English
  labels; plurals use the same one|few|many rule as Russian.
- Registered as the seventh language: "Polski" in the picker, locales pl,
  pl-PL and pl_PL.UTF-8, complete_menus = true so the completeness tests
  cover it.
- tests/polish.rs: the Polish UI test, modeled on the French one.
- README and AGENTS updated for the new language.

* Add Hungarian localization and fix responsive settings layout

* i18n: add Czech (cs) interface language

Czech catalog with every key of the most complete catalog (287 rows), the
cs language entry with locale detection (cs-CZ, cs_CZ.UTF-8, ?lang=cs),
a Czech plural rule (1 / 2-4 / other) with a unit test, and the README
language list.

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

* i18n(pl): use Polish plural rule, so 21 is "21 aplikacji"

plural_east_slavic treats 21, 31 and 101 as "one", which is right for
Russian but not Polish, where only 1 itself takes the singular.

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

* i18n(cs): translate "Installed · latest {latest}" (added by #195)

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

* i18n(pl): translate "Installed · latest {latest}" (added by #195)

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

* i18n(hu): translate "Installed · latest {latest}" (added by #195)

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

* hungarian test: count only the settings body's links, not the cards' Website links behind the modal

#198 gave every card a Website link, and Hungarian labels both Webhely.

* hungarian test: card links are 14px text, settings icons 24px; filter on that

---------

Co-authored-by: DzikStar <82441193+DzikStar@users.noreply.github.com>
Co-authored-by: Losminek <301412321+Losminek@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

README.md

@@ -85,15 +85,16 @@ The web version shows the same catalog in the browser, with the latest download
 ## Interface languages
 
 The interface is in English, Brazilian Portuguese (Português (Brasil)), Czech (Čeština), French
-(Français), German (Deutsch), Polish (Polski), Russian (Русский), Simplified Chinese (简体中文) or
-Spanish (Español). **Auto**, the default, follows the system or browser language; **Settings →
-Language** picks one and switches at once, and the choice is kept between runs. Czech locales
-(`cs-CZ`, `cs_CZ.UTF-8`…) select Czech, German ones (`de-DE`, `de-AT`, `de-CH`, `de_DE.UTF-8`…)
-German, French ones (`fr-FR`, `fr-CA`…) French, Polish ones (`pl`, `pl-PL`, `pl_PL.UTF-8`) Polish,
-Spanish ones (`es-ES`, `es-MX`, `es-419`…) Spanish, and Portuguese ones (`pt-BR`, and `pt-PT` too,
-for now) Brazilian Portuguese. Simplified Chinese locales (`zh-CN`, `zh-SG`, `zh-Hans`, and POSIX
-forms such as `zh_CN.UTF-8`) select Chinese; Traditional Chinese ones don't. To try a language
-without changing the setting, start the desktop app with `ARTCRAFT_LAUNCHER_LOCALE=pt-BR`, or add
+(Français), German (Deutsch), Hungarian (Magyar), Polish (Polski), Russian (Русский), Simplified
+Chinese (简体中文) or Spanish (Español). **Auto**, the default, follows the system or browser
+language; **Settings → Language** picks one and switches at once, and the choice is kept between
+runs. Czech locales (`cs-CZ`, `cs_CZ.UTF-8`…) select Czech, German ones (`de-DE`, `de-AT`,
+`de-CH`, `de_DE.UTF-8`…) German, French ones (`fr-FR`, `fr-CA`…) French, Hungarian ones (`hu`,
+`hu-HU`, `hu_HU.UTF-8`…) Hungarian, Polish ones (`pl`, `pl-PL`, `pl_PL.UTF-8`) Polish, Spanish ones
+(`es-ES`, `es-MX`, `es-419`…) Spanish, and Portuguese ones (`pt-BR`, and `pt-PT` too, for now)
+Brazilian Portuguese. Simplified Chinese locales (`zh-CN`, `zh-SG`, `zh-Hans`, and POSIX forms such
+as `zh_CN.UTF-8`) select Chinese; Traditional Chinese ones don't. To try a language without
+changing the setting, start the desktop app with `ARTCRAFT_LAUNCHER_LOCALE=pt-BR`, or add
 `?lang=ru` to the web address.
 
 Chinese is drawn with the system's own Chinese font (PingFang on macOS, Microsoft YaHei on