fix(i18n): replace hardcoded Chinese strings with translation keys in DeepLinkImportDialog

- Add missing i18n keys for prompt, MCP, and skill import dialogs
- Replace hardcoded toast messages with t() function calls
- Add translation keys: importPrompt, importMcp, importSkill, etc.
- Ensure all user-facing text supports both zh and en locales

src/i18n/locales/en.json

@@ -749,6 +749,20 @@
   "deeplink": {
     "confirmImport": "Confirm Import Provider",
     "confirmImportDescription": "The following configuration will be imported from deep link into CC Switch",
+    "importPrompt": "Import Prompt",
+    "importPromptDescription": "Please confirm whether to import this system prompt",
+    "importMcp": "Import MCP Servers",
+    "importMcpDescription": "Please confirm whether to import these MCP Servers",
+    "importSkill": "Add Skill Repository",
+    "importSkillDescription": "Please confirm whether to add this Skill repository",
+    "promptImportSuccess": "Prompt imported successfully",
+    "promptImportSuccessDescription": "Imported prompt: {{name}}",
+    "mcpImportSuccess": "MCP Servers imported successfully",
+    "mcpImportSuccessDescription": "Successfully imported {{count}} server(s)",
+    "mcpPartialSuccess": "Partial import success",
+    "mcpPartialSuccessDescription": "Success: {{success}}, Failed: {{failed}}",
+    "skillImportSuccess": "Skill repository added successfully",
+    "skillImportSuccessDescription": "Added repository: {{repo}}",
     "app": "App Type",
     "providerName": "Provider Name",
     "homepage": "Homepage",

src/i18n/locales/zh.json

@@ -749,6 +749,20 @@
   "deeplink": {
     "confirmImport": "确认导入供应商配置",
     "confirmImportDescription": "以下配置将导入到 CC Switch",
+    "importPrompt": "导入提示词",
+    "importPromptDescription": "请确认是否导入此系统提示词",
+    "importMcp": "导入 MCP Servers",
+    "importMcpDescription": "请确认是否导入这些 MCP Servers",
+    "importSkill": "添加 Skill 仓库",
+    "importSkillDescription": "请确认是否添加此 Skill 仓库",
+    "promptImportSuccess": "提示词导入成功",
+    "promptImportSuccessDescription": "已导入提示词: {{name}}",
+    "mcpImportSuccess": "MCP Servers 导入成功",
+    "mcpImportSuccessDescription": "成功导入 {{count}} 个服务器",
+    "mcpPartialSuccess": "部分导入成功",
+    "mcpPartialSuccessDescription": "成功: {{success}}, 失败: {{failed}}",
+    "skillImportSuccess": "Skill 仓库添加成功",
+    "skillImportSuccessDescription": "已添加仓库: {{repo}}",
     "app": "应用类型",
     "providerName": "供应商名称",
     "homepage": "官网地址",