feat: localize "Show Widget" and session/weekly window labels

- Add `show_widget` field to Strings struct and all 6 language files
- Replace hardcoded "Show Widget" in window.rs with strings.show_widget
- Translate session_window ("5시간") and weekly_window ("7일") for Korean

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: u-naro

src/localization/english.rs

@@ -27,6 +27,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Update available",
     update_prompt_now: "Version {version} is available. Do you want to update now?",
     exit: "Exit",
+    show_widget: "Show Widget",
     session_window: "5h",
     weekly_window: "7d",
     now: "now",

src/localization/french.rs

@@ -27,6 +27,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Mise à jour disponible",
     update_prompt_now: "La version {version} est disponible. Voulez-vous mettre à jour maintenant ?",
     exit: "Quitter",
+    show_widget: "Afficher le widget",
     session_window: "5h",
     weekly_window: "7d",
     now: "maintenant",

src/localization/german.rs

@@ -27,6 +27,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Update verfügbar",
     update_prompt_now: "Version {version} ist verfügbar. Möchten Sie jetzt aktualisieren?",
     exit: "Beenden",
+    show_widget: "Widget anzeigen",
     session_window: "5h",
     weekly_window: "7d",
     now: "jetzt",

src/localization/japanese.rs

@@ -27,6 +27,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "更新が利用可能です",
     update_prompt_now: "バージョン {version} が利用可能です。今すぐ更新しますか？",
     exit: "終了",
+    show_widget: "ウィジェットを表示",
     session_window: "5h",
     weekly_window: "7d",
     now: "今",

src/localization/korean.rs

@@ -27,8 +27,9 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "업데이트 사용 가능",
     update_prompt_now: "버전 {version}을 사용할 수 있습니다. 지금 업데이트하시겠습니까?",
     exit: "종료",
-    session_window: "5h",
-    weekly_window: "7d",
+    show_widget: "위젯 표시",
+    session_window: "5시간",
+    weekly_window: "7일",
     now: "지금",
     day_suffix: "일",
     hour_suffix: "시간",

src/localization/mod.rs

@@ -119,6 +119,7 @@ pub struct Strings {
     pub update_available: &'static str,
     pub update_prompt_now: &'static str,
     pub exit: &'static str,
+    pub show_widget: &'static str,
     pub session_window: &'static str,
     pub weekly_window: &'static str,
     pub now: &'static str,

src/localization/spanish.rs

@@ -27,6 +27,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Actualización disponible",
     update_prompt_now: "La versión {version} está disponible. ¿Quieres actualizar ahora?",
     exit: "Salir",
+    show_widget: "Mostrar widget",
     session_window: "5h",
     weekly_window: "7d",
     now: "ahora",

src/window.rs

@@ -2043,7 +2043,7 @@ fn show_context_menu(hwnd: HWND) {
             PCWSTR::from_raw(settings_label.as_ptr()),
         );
 
-        let widget_label = native_interop::wide_str("Show Widget");
+        let widget_label = native_interop::wide_str(strings.show_widget);
         let widget_flags = if widget_visible { MF_CHECKED } else { MENU_ITEM_FLAGS(0) };
         let _ = AppendMenuW(
             menu,