fix(themes): reuse the key that was already written for this failure

f8e2a59 added `OpenInFileManagerFailed` in all three locales for exactly
this case and then only wired its sibling, so the key sat dead — clippy
was reporting it as never constructed. The follow-up fix invented a second
key rather than using it.

Now the notification reads "Could not open /…/themes", naming the path
instead of a category, and `ThemeFolderFailed` is gone. Clippy's
never-constructed list is back to what it is on main.

src/ui/app.rs

@@ -1448,7 +1448,15 @@ impl Tty7App {
         // file manager just opens nothing.
         if let Err(e) = std::fs::create_dir_all(&dir) {
             log::warn!("could not create {}: {e}", dir.display());
-            crate::ui::host_ops::HostOps::notify_err(window, cx, t(L10nKey::ThemeFolderFailed), &e);
+            crate::ui::host_ops::HostOps::notify_err(
+                window,
+                cx,
+                &t_fmt(
+                    L10nKey::OpenInFileManagerFailed,
+                    &[("path", &dir.display().to_string())],
+                ),
+                &e,
+            );
             return;
         }
         cx.open_with_system(&dir);

src/ui/i18n/en.rs

@@ -147,7 +147,6 @@ pub fn translate_en(key: L10nKey) -> &'static str {
         L10nKey::SettingsAnsiColors => "ANSI colors",
         L10nKey::SettingsCustomThemes => "Custom themes",
         L10nKey::SettingsThemesRejected => "Not loaded from the themes folder",
-        L10nKey::ThemeFolderFailed => "Could not open the themes folder",
         L10nKey::ThemeDuplicateFailed => "Could not duplicate the theme",
         L10nKey::ThemeSaveFailed => "Could not save the theme",
         L10nKey::OpenInFileManagerFailed => "Could not open {path}",

src/ui/i18n/ja.rs

@@ -149,7 +149,6 @@ pub fn translate_ja(key: L10nKey) -> Option<&'static str> {
         L10nKey::SettingsAnsiColors => "ANSI カラー",
         L10nKey::SettingsCustomThemes => "カスタムテーマ",
         L10nKey::SettingsThemesRejected => "テーマフォルダから読み込めなかったもの",
-        L10nKey::ThemeFolderFailed => "テーマフォルダを開けませんでした",
         L10nKey::ThemeDuplicateFailed => "テーマを複製できませんでした",
         L10nKey::ThemeSaveFailed => "テーマを保存できませんでした",
         L10nKey::OpenInFileManagerFailed => "{path} を開けませんでした",

src/ui/i18n/mod.rs

@@ -191,7 +191,6 @@ l10n_keys! {
     SettingsCustomThemes,
     SettingsThemesRejected,
     ThemeDuplicateFailed,
-    ThemeFolderFailed,
     ThemeSaveFailed,
     OpenInFileManagerFailed,
     SettingsCustomThemesIntro,

src/ui/i18n/zh.rs

@@ -131,7 +131,6 @@ pub fn translate_zh(key: L10nKey) -> Option<&'static str> {
         L10nKey::SettingsAnsiColors => "ANSI 颜色",
         L10nKey::SettingsCustomThemes => "自定义主题",
         L10nKey::SettingsThemesRejected => "主题文件夹里这些没能加载",
-        L10nKey::ThemeFolderFailed => "无法打开主题文件夹",
         L10nKey::ThemeDuplicateFailed => "无法复制主题",
         L10nKey::ThemeSaveFailed => "无法保存主题",
         L10nKey::OpenInFileManagerFailed => "无法打开 {path}",