WebMCP updates, clarifications, and next steps

WebMCP, a collaborative proposal from Microsoft and Google under the W3C Web Machine Learning Working Group, lets web developers expose AI-accessible tools on their pages via a browser API. A key clarification: the browser acts as a translator between the WebMCP tool definitions and the Model Context Protocol (MCP), handling the data and transport layers so developers only write JavaScript functions. Recent spec updates include a renamed API at `navigator.modelContext`, new `registerTool()`/`unregisterTool()` methods for dynamic tool management in SPAs, and a built-in `agent.requestUserInteraction()` for keeping humans in the loop. Google Chrome has launched an early preview, and the Edge team is also actively involved.