New matrix job across Python 3.10-3.14 verifies uv.lock against the
declared floors, installs the locked mcp+proxy extras and runs the MCP
unit suites, then resolves the same extras with uv's lowest-direct
strategy into a clean venv and runs scripts/check_mcp_sdk_install.py to
prove the floor still imports the SDK 2 API surface.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>