fix: 注册 locale 字典，修掉设置行显示翻译键的问题

设置行之前显示的是 settings.title / settings.description 这样的原始键：
插件只调用了 locale.bind(NS) 却没有调用 locale.register(NS, { zh, en })，
而 locale 服务在命名空间没有字典时会把 key 原样返回。

- apply 里用 ctx.effect 注册本包的 zh / en 字典（注册会打点 locale 修订号，
  已渲染的条目自动换上文案，不需要刷新页面）；
- 单语言注册形式作为兼容兜底；
- 自带字典兜底同时生效：拿不到框架的 t、或 locale 服务没保存注册时，
  仍然渲染中文/英文文案而不是原始键；快照语言改为读 snapshot.active（真实字段名）；
- 验证从 40 项增加到 44 项，新增：字典已注册且中英键集合一致、
  设置行与弹窗渲染出的字符串都不是原始键、无框架 t 时的本地兜底、
  locale 服务不保存注册时仍有文案。

client.js

@@ -375,10 +375,35 @@ window.__ModuleLoader__.load({
       return preview(interaction.displayReason?.text ?? interaction.reason?.text ?? '')
     }
 
+    /**
+     * Register this package's dictionaries with the locale service.
+     *
+     * Without this the service has no entry for the namespace and every
+     * `locale.bind(NS)` lookup answers with the key itself, so the settings row
+     * shows `settings.title` instead of its copy. The typed form takes every
+     * shipped locale in one call, and the older single-locale form stays
+     * supported as a fallback. Registration bumps the locale revision, so
+     * already-rendered entries pick the copy up without a reload.
+     * @param locale - the locale service, or undefined when this profile has none.
+     * @returns a disposer for whichever registrations were installed.
+     */
+    function registerDictionaries(locale) {
+      if (locale === undefined || typeof locale.register !== 'function') return () => {}
+      const dictionaries = { zh, en }
+      try {
+        return locale.register(NS, dictionaries)
+      } catch {
+        const disposers = Object.entries(dictionaries).map(([id, dict]) => locale.register(NS, id, dict))
+        return () => {
+          for (const dispose of disposers) dispose?.()
+        }
+      }
+    }
+
     /**
      * Build a translate function for one locale service: the service's own bound
-     * namespace first, then the current language's dictionary, then the key
-     * itself, so a missing seat degrades copy instead of rendering.
+     * namespace first, then this package's dictionaries, then the key itself, so
+     * a missing seat degrades copy instead of rendering.
      * @param locale - the locale service, or undefined when this profile has none.
      * @returns a translate function with `{ name }` interpolation.
      */
@@ -387,7 +412,10 @@ window.__ModuleLoader__.load({
         if (locale !== undefined && typeof locale.bind === 'function') {
           try {
             const bound = locale.bind(NS)
-            if (typeof bound === 'function') return bound(key, params)
+            if (typeof bound === 'function') {
+              const translated = bound(key, params)
+              if (typeof translated === 'string' && translated !== key) return translated
+            }
           } catch {
             /* a locale service without this namespace still renders the fallback */
           }
@@ -395,7 +423,7 @@ window.__ModuleLoader__.load({
         let language = ''
         try {
           const snapshot = locale?.getSnapshot?.()
-          language = String(snapshot?.language ?? snapshot?.locale ?? snapshot?.id ?? '')
+          language = String(snapshot?.active ?? '')
         } catch {
           language = ''
         }
@@ -951,6 +979,7 @@ window.__ModuleLoader__.load({
         }
       }
 
+      ctx.effect(() => registerDictionaries(locale), 'session-notify: dictionaries')
       ctx.effect(() => installBridges(), 'session-notify: window focus')
       ctx.effect(() => () => {
         disposed = true