Summary:

This PR replaces any types in FunctionTool with proper Zod generics, enabling automatic type inference from schemas to execute functions.

Changes

• Replaced ZodObject<any> with ZodObject<ZodRawShape> in ToolInputParameters
• Updated ToolExecuteArgument to properly infer types using infer T, U, V
• Removed unnecessary any cast in constructor

Impact

const tool = new FunctionTool({
  parameters: z.object({ 
    studentId: z.number(),
    name: z.string()
  }),
  execute: async ({ studentId, name }) => {
    // studentId and name are now automatically typed from schema
    return { studentId, name };
  },
});

Testing

Added test to verify type inference works without explicit type annotations. All existing tests continue to pass.

Benefits

• Automatic type inference from Zod schemas
• Full autocomplete/IntelliSense support
• Compile-time type checking

Fixes #37