fix(i18n): prevent base name overwrites when editing in localized UI

Include base names in API responses to correctly populate edit forms.
Show base values as placeholders in translation fields for better UX.
Use default locale when fetching previous state for history diffs.

frontend/src/views/PokemonEdit.vue

@@ -101,7 +101,7 @@ async function loadEditor() {
       const pokemon = await api.pokemonDetail(routeId.value);
       pokemonForm.value = {
         id: String(pokemon.id),
-        name: pokemon.name,
+        name: pokemon.baseName ?? pokemon.name,
         translations: pokemon.translations ?? {},
         environmentId: String(pokemon.environment.id),
         skillIds: pokemon.skills.map((skill) => String(skill.id)),