- Moves MCP tool discovery logic from ToolRegistry into a new, dedicated MCP client (mcp-client.ts and mcp-tool.ts).
- Updates ToolRegistry to utilize the new MCP client.
- Adds comprehensive tests for the new MCP client and its integration with ToolRegistry.
Part of https://github.com/google-gemini/gemini-cli/issues/577
- This change modifies the tool discovery process for MCP (Model Context Protocol) tools.
- When tools are fetched from an MCP server, the `additionalProperties` and `$schema` fields are now recursively removed from their input schemas. This ensures cleaner and more concise tool definitions within the CLI, aligning with the expected schema structure and preventing potential conflicts or verbose outputs.
- The corresponding tests in `tool-registry.test.ts` have been updated to reflect this new behavior and verify the correct stripping of these properties.
Workaround for https://github.com/google-gemini/gemini-cli/issues/398
