`toolSchemaToZod`

Converts the JSON Schema output from Tool.toOpenAI().function.parameters into a Zod object schema that the MCP SDK uses for input validation. See src/lib/schema-converter.ts for the full signature.

Supports:

JSON Schema type	Zod type
`string`	`z.string()`
`number`	`z.number()`
`integer`	`z.number().int()`
`boolean`	`z.boolean()`
`array`	`z.array(...)`
`object`	`z.object({...})`

Recursively handles required/optional fields and description annotations. Throws on unknown types.

Called by BaseMcpServer.register() for every registered tool.