Merge branch 'codex/global-distro-cli-hardening' into main

Resolved conflicts in QML files, adopting the new UI layout and improvements from the codex branch while maintaining compatibility with recent main updates.

Author: Sopwit

i18n/README.md

@@ -7,6 +7,10 @@ This directory contains the Qt Linguist translation sources for ro-Control.
 - `ro-control_en.ts` - English source catalog kept in sync with extracted strings
 - `ro-control_tr.ts` - Turkish translation catalog
 
+Additional catalogs (`ro-control_de.ts`, `ro-control_es.ts`) are maintained in the
+repository, but currently not shipped at runtime until translation coverage is
+completed.
+
 English is the source language used directly in code. Additional locales should be
 added as new `ro-control_<locale>.ts` files.
 
@@ -31,9 +35,9 @@ Example workflow:
 ```bash
 mkdir -p build
 cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug
-lupdate src -ts i18n/ro-control_en.ts i18n/ro-control_tr.ts
+lupdate-qt6 -no-obsolete src -ts i18n/ro-control_en.ts i18n/ro-control_de.ts i18n/ro-control_es.ts i18n/ro-control_tr.ts
 linguist i18n/ro-control_tr.ts
-cmake --build build
+cmake --build build --target ro-control_lrelease
 ```
 
 ## Adding a new language

i18n/ro-control_de.ts

@@ -19,11 +19,21 @@ struct LanguageEntry {
 constexpr LanguageEntry kSupportedLanguages[] = {
     {"system", "System Default", "System Default", true},
     {"en", "English", "English", true},
-    {"de", "German", "Deutsch", true},
-    {"es", "Spanish", "Espanol", true},
+    {"de", "German", "Deutsch", false},
+    {"es", "Spanish", "Espanol", false},
     {"tr", "Turkish", "Turkce", true},
 };
 
+bool isShippedLanguage(const QString &languageCode) {
+  for (const auto &entry : kSupportedLanguages) {
+    if (QString::fromLatin1(entry.code) == languageCode) {
+      return entry.shipped;
+    }
+  }
+
+  return false;
+}
+
 } // namespace
 
 LanguageManager::LanguageManager(QCoreApplication *application,
@@ -57,6 +67,10 @@ QString LanguageManager::currentLanguageLabel() const {
 QVariantList LanguageManager::availableLanguages() const {
   QVariantList languages;
   for (const auto &entry : kSupportedLanguages) {
+    if (!entry.shipped) {
+      continue;
+    }
+
     QVariantMap language;
     language.insert(QStringLiteral("code"), QString::fromLatin1(entry.code));
     language.insert(QStringLiteral("label"), QString::fromLatin1(entry.label));
@@ -119,8 +133,15 @@ QString LanguageManager::systemLanguageCode() const {
 QString
 LanguageManager::effectiveLanguageCode(const QString &languageCode) const {
   const QString normalizedLanguage = normalizeLanguageCode(languageCode);
-  return normalizedLanguage == QStringLiteral("system") ? systemLanguageCode()
-                                                        : normalizedLanguage;
+  const QString effective = normalizedLanguage == QStringLiteral("system")
+                                ? systemLanguageCode()
+                                : normalizedLanguage;
+
+  if (effective == QStringLiteral("en")) {
+    return effective;
+  }
+
+  return isShippedLanguage(effective) ? effective : QStringLiteral("en");
 }
 
 bool LanguageManager::loadLanguage(const QString &languageCode) {