i18n: complete internationalization for settings panel

- Add missing translation keys for all hint texts and descriptions
- Remove all hardcoded defaultValue parameters from components
- Add translations for window behavior, directory settings, and theme settings
- Add translations for provider-related UI elements
- Improve consistency across Chinese and English translations

Translation additions:
- common.toggleTheme
- settings.windowBehaviorHint, claudeConfigDirDescription, codexConfigDirDescription
- provider.* (12 new keys)
- providerForm.* (15 new keys)
- providerPreset.* (4 new keys)

Modified files: 10
Lines changed: +132 -74

src/components/settings/AboutSection.tsx

@@ -75,9 +75,7 @@ export function AboutSection({ isPortable }: AboutSectionProps) {
     } catch (error) {
       console.error("[AboutSection] Failed to open release notes", error);
       toast.error(
-        t("settings.openReleaseNotesFailed", {
-          defaultValue: "打开更新日志失败",
-        }),
+        t("settings.openReleaseNotesFailed"),
       );
     }
   }, [t, updateInfo?.availableVersion, version]);
@@ -101,9 +99,7 @@ export function AboutSection({ isPortable }: AboutSectionProps) {
       } catch (error) {
         console.error("[AboutSection] Update failed", error);
         toast.error(
-          t("settings.updateFailed", {
-            defaultValue: "更新安装失败，已尝试打开下载页面。",
-          }),
+          t("settings.updateFailed"),
         );
         try {
           await settingsApi.checkUpdates();
@@ -122,29 +118,25 @@ export function AboutSection({ isPortable }: AboutSectionProps) {
     try {
       const available = await checkUpdate();
       if (!available) {
-        toast.success(t("settings.upToDate", { defaultValue: "已是最新版本" }));
+        toast.success(t("settings.upToDate"));
       }
     } catch (error) {
       console.error("[AboutSection] Check update failed", error);
       toast.error(
-        t("settings.checkUpdateFailed", {
-          defaultValue: "检查更新失败，请稍后重试。",
-        }),
+        t("settings.checkUpdateFailed"),
       );
     }
   }, [checkUpdate, hasUpdate, isPortable, resetDismiss, t, updateHandle]);
 
   const displayVersion =
-    version ?? t("common.unknown", { defaultValue: "未知" });
+    version ?? t("common.unknown");
 
   return (
     <section className="space-y-4">
       <header className="space-y-1">
         <h3 className="text-sm font-medium">{t("common.about")}</h3>
         <p className="text-xs text-muted-foreground">
-          {t("settings.aboutHint", {
-            defaultValue: "查看版本信息与更新状态。",
-          })}
+          {t("settings.aboutHint")}
         </p>
       </header>
 
@@ -163,9 +155,7 @@ export function AboutSection({ isPortable }: AboutSectionProps) {
             {isPortable ? (
               <p className="inline-flex items-center gap-1 text-xs text-muted-foreground">
                 <Info className="h-3 w-3" />
-                {t("settings.portableMode", {
-                  defaultValue: "当前为便携版，更新需手动下载。",
-                })}
+                {t("settings.portableMode")}
               </p>
             ) : null}
           </div>
@@ -190,20 +180,19 @@ export function AboutSection({ isPortable }: AboutSectionProps) {
               {isDownloading ? (
                 <span className="inline-flex items-center gap-2">
                   <Loader2 className="h-4 w-4 animate-spin" />
-                  {t("settings.updating", { defaultValue: "安装更新..." })}
+                  {t("settings.updating")}
                 </span>
               ) : hasUpdate ? (
                 <span className="inline-flex items-center gap-2">
                   <Download className="h-4 w-4" />
                   {t("settings.updateTo", {
-                    defaultValue: "更新到 {{version}}",
                     version: updateInfo?.availableVersion ?? "",
                   })}
                 </span>
               ) : isChecking ? (
                 <span className="inline-flex items-center gap-2">
                   <RefreshCw className="h-4 w-4 animate-spin" />
-                  {t("settings.checking", { defaultValue: "检查中..." })}
+                  {t("settings.checking")}
                 </span>
               ) : (
                 t("settings.checkForUpdates")
@@ -216,7 +205,6 @@ export function AboutSection({ isPortable }: AboutSectionProps) {
           <div className="rounded-md bg-muted/40 px-3 py-2 text-xs text-muted-foreground">
             <p>
               {t("settings.updateAvailable", {
-                defaultValue: "检测到新版本：{{version}}",
                 version: updateInfo.availableVersion,
               })}
             </p>