🔍 feat: Anthropic/Google Web Search Support via addParams / dropParams

[danny-avila]

Summary

Closes #10054

I added support for parameter management through addParams and dropParams in LLM configurations, with comprehensive test coverage for web search support across Anthropic and Google configurations

• Added 135 lines of tests for Anthropic web search configurations with various parameter handling scenarios
• Created a new test file for Google compatibility with 196 lines covering web search and parameter management
• Implemented known parameter sets for both Anthropic and Google endpoints to properly route configuration values
• Added support for addParams to enable dynamic parameter injection while respecting provider-native parameters
• Implemented dropParams functionality to exclude specific parameters from configurations
• Enhanced the transform utility to handle web_search as a special case separate from model configuration
• Improved parameter routing logic to distinguish between provider-native params and OpenAI params
• Added proper handling for Google-specific parameters like topK, maxOutputTokens, and authOptions
• Implemented parameter cleanup logic to remove empty modelKwargs objects after dropParams processing
• Extended type definitions to include addParams and dropParams in configuration options

Change Type

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update

Testing

The changes include comprehensive unit tests covering multiple scenarios:

Test Scenarios:

• Web search enablement via addParams with web_search: true
• Web search disablement via addParams with web_search: false
• Web search removal via dropParams
• Mixed parameter handling combining provider-native and OpenAI parameters
• Parameter routing to correct configuration locations (top-level vs modelKwargs)
• Proper handling of unknown parameters
• Interaction between addParams and dropParams

Test Configuration:

• Framework: Jest
• Test files: config.anthropic.spec.ts, config.google.spec.ts
• Coverage: Parameter routing, web search tools, configuration transformation

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes
• Any changes dependent on mine have been merged and published in downstream modules