添加本地提供者支持，包括本地嵌入模型的描述、特性和设置，更新相关类型和API函数以支持新模型。

src/lang/locale/en.ts

@@ -257,6 +257,11 @@ export default {
 			searchOrEnterModelName: 'Search or enter model name...',
 			enterCustomModelName: 'Enter custom model name',
 			custom: 'Custom: ',
+			localProviderDescription: 'Local embedding models run on your device using WASM technology, providing privacy and offline capability.',
+			localProviderFeature0: 'Currently only supports embedding models',
+			localProviderFeature1: 'Complete privacy - data never leaves your device',
+			localProviderFeature2: 'No API costs - runs entirely locally',
+			localProviderFeature3: 'Offline capability - works without internet connection',
 			testConnection: {
 				testApiConnection: 'Test API Connection',
 				testingConnection: 'Testing connection...',

src/lang/locale/zh-cn.ts

@@ -259,6 +259,11 @@ export default {
 			searchOrEnterModelName: '搜索或输入模型名称...',
 			enterCustomModelName: '输入自定义模型名称',
 			custom: '自定义: ',
+			localProviderDescription: '本地嵌入模型使用 WASM 技术在您的设备上运行，提供隐私保护和离线功能。',
+			localProviderFeature0: '目前仅支持嵌入模型',
+			localProviderFeature1: '完全隐私 - 数据不会离开您的设备',
+			localProviderFeature2: '无 API 费用 - 完全本地运行',
+			localProviderFeature3: '离线功能 - 无需网络连接即可工作',
 			testConnection: {
 				testApiConnection: '测试 API 连接',
 				testingConnection: '正在测试连接...',