[Verlintas]

Problem

Country codes and recording formats are uppercased with the device locale. In Turkish/Azeri locales "in".uppercase() becomes "İN" (dotted capital İ), which breaks two things:

• EmojiUtils.getFlagEmoji() computes the regional-indicator code points from A–Z (codePoint - 0x41 + 0x1F1E6), so a non-ASCII letter produces a bogus symbol instead of the flag — e.g. India (IN), Italy (IT), Ireland (IE) show a wrong glyph when the stored code is lowercase.
• The same uppercased code is rendered in the tab title and settings list, so users see İN instead of IN.

Fix

Use Locale.ROOT wherever these strings are identifiers rather than display text:

• EmojiUtils.getFlagEmoji() normalises the code once with uppercase(Locale.ROOT).
• TabsScreen / SettingsScreen uppercase country codes for the flag and label with Locale.ROOT.
• RecordingsTab uppercases recording format labels (mp3 → MP3) with Locale.ROOT.

No change for Latin locales; this only removes the locale-dependent behaviour for identifier strings.

AI disclosure

This PR was authored by an AI coding agent (OpenCode, running DeepSeek V4.1 Flash) under human supervision: the change, tests and description were generated by the agent and reviewed by the contributor before submission.

[ounben]

https://sam-cooper.medium.com/the-country-that-broke-kotlin-84bdd0afb237

https://developer.android.com/reference/java/util/Locale#ROOT

Useful constant for the root locale. The root locale is the locale whose language, country, and variant are empty ("") strings. This is regarded as the base locale of all locales, and is used as the language/country neutral locale for the locale sensitive operations.

PR looks good and it's a bug that I did not see or thought about. After double checking in Android Studio it will be merged.

[ounben]

Diff: putExtra(Intent.EXTRA_TEXT, "${record.Name}\nRecording: ${record.format.uppercase(Locale.ROOT)}")

[ounben]

Diff: val code = item.code?.uppercase(Locale.ROOT) ?: return@mapNotNull null

[ounben]

Diff: import java.util.Locale - local.ROOT

[ounben]

Diff: ASCII