analyze_floorplan_image and analyze_room_photo defer the vision work to the host via MCP sampling (server.server.createMessage). Validates host capability before calling, fetches URL inputs and base64-encodes them, constrains output to a Zod schema, and returns structured content. No vision model is bundled. 9 tests, all passing via a mocked sampling-capable client. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>