Models：支持在 Web UI 里管理可见模型 (#613)

* feat(models): add WUI model visibility filter

Store provider model visibility in Web UI app config and filter the WUI model picker/model page without rewriting Hermes CLI config or canonical model IDs.

* fix(models): sync sidebar after visibility changes

packages/client/src/i18n/locales/en.ts

@@ -553,6 +553,13 @@ export default {
     models: 'Models',
     count: 'models',
     more: 'more',
+    manageVisibleModels: 'Manage visible models',
+    manageVisibleModelsFor: 'Manage visible models for {name}',
+    visibilityHint: 'Only affects the Web UI model picker and Models page. Hermes CLI provider/model config is not rewritten; calls still use canonical model IDs.',
+    visibilitySelectOne: 'Keep at least one visible model',
+    visibilitySaved: 'Visible models saved',
+    visibilitySaveFailed: 'Failed to save visible models',
+    showAllModels: 'Show all models',
     builtIn: 'Built-in',
     customType: 'Custom',
     provider: 'Provider',