The in-app language picker silently did nothing: AppCompatDelegate.set
ApplicationLocales only syncs to the system from an AppCompatActivity, but
MainActivity was a plain ComponentActivity (with a platform theme). Switch
MainActivity to AppCompatActivity and base Theme.Calendula on
Theme.AppCompat.DayNight.NoActionBar.
Changing the locale recreates the activity; set android:windowBackground to a
DayNight colour matching the Compose background (light #FBFCFE / dark #101316)
so the recreation no longer flashes a contrasting backdrop.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add scripts/check_translations.py and a lightweight Translations workflow
that runs it (no Android SDK needed) so Weblate PRs get fast feedback. The
script fails on stale keys (present in a translation but not the base) and on
translating translatable="false" entries; missing keys are reported as
coverage only.
Downgrade lint's MissingTranslation to informational: partial community
translations are expected and fall back to the English base at runtime.
Stale/extra keys (ExtraTranslation) remain fatal in lintDebug.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Make the supported-language list a single source of truth so community
translations show up with no code change: add res/xml/locales_config.xml
(en, de) and reference it via android:localeConfig, which also surfaces the
per-app language entry in Android 13+ system settings.
Rewrite AppLanguage to parse locales_config.xml for the supported BCP-47
tags and expose currentTag/apply/displayName (autonyms), dropping the
hardcoded LanguagePref enum; the Settings picker is now built from that list.
Remove the now-unused settings_language_german/english strings.
Adding a language is now: drop in values-<tag>/strings.xml and add one
<locale> line.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
