- Implemented a structured web-search query parsing module supporting directives, tokenization, date parsing, and syntax serialization.
- Updated search providers to map query directives and date bounds to native provider parameters and filters.
- Added lenient result constraint post-filtering and configuration settings for enhanced engine routing.
- Added comprehensive unit and integration tests covering query parsing, constraint filtering, and provider-specific request mapping.
Initialized the Z.AI Streamable HTTP MCP session before calling web_search_prime and preserved the returned session id on subsequent requests.
Added regression coverage for the authenticated MCP request sequence.
Fixes#3619
can1357