feat(web): 网页搜索与获取设置页分开选择 Search 与 Fetch，Search 默认改为 DeepSeek Search API

python/sdk-runtime/package.json

@@ -156,8 +156,6 @@
     "@deepseek-ai/dsh-web": "workspace:*",
     "@deepseek-ai/dsh-web-fetch-http": "workspace:*",
     "@deepseek-ai/dsh-web-search-deepseek": "workspace:*",
-    "@deepseek-ai/dsh-web-search-exa": "workspace:*",
-    "@deepseek-ai/dsh-web-search-perplexity": "workspace:*",
     "@deepseek-ai/dsh-workflow": "workspace:*",
     "@deepseek-ai/dsh-workflow-ptc": "workspace:*",
     "@deepseek-ai/dsh-working-directory": "workspace:*",