* feat(websearch): implement search window functionality and enhance search service
* feat(DefaultProvider): integrate @mozilla/readability for improved content parsing
* Add LocalSearchProvider for web page scraping
AI: Change `provider` from private to protected in BaseWebSearchProvider and implement LocalSearchProvider for web searching with browser-based content extraction.
* Add web search provider management features
Implement addWebSearchProvider function to prevent duplicates,
automatically load default providers on initialization, fix
LocalSearchProvider implementation, and update local provider
identification logic.
* Improve web search with specialized search engine parsers
Add dedicated parsers for Google, Bing, and Baidu search results,
replacing the generic URL extraction approach. Enhance page loading
with proper wait mechanisms and window cleanup. Remove DuckDuckGo
provider as it's no longer supported.
* Simplify DefaultProvider to unimplemented placeholder
* Remove default search engine from initial state
* Improve web search providers config and display
Add configuration for local search providers, remove empty apiKey fields,
and enhance the UI by sorting providers alphabetically and showing
whether they require an API key.
* Add stderr logging for MCP servers
* Make search window initially hidden
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