Agents, Workers - Agents SDK reduces MCP schema conversion, adds exposure controls for MCP in Think and Code Mode SDK adds direct host APIs

This release reduces repeated MCP schema conversion and adds an opt-out for Think’s automatic MCP tool exposure. It also lets non-AI-SDK hosts invoke the durable Code Mode runtime directly. Control direct MCP tool exposure in Think Agents SDK MCP clients now reuse converted input and output schemas while a live connection keeps the same tool catalog.