Align docs and Makefile with public release surface

docs/public-contract.md

@@ -7,6 +7,7 @@ This document defines the supported public interface for `pyro-mcp` `1.x`.
 - Distribution name: `pyro-mcp`
 - Public executable: `pyro`
 - Public Python import: `from pyro_mcp import Pyro`
+- Public package-level factory: `from pyro_mcp import create_server`
 
 ## CLI Contract
 
@@ -46,7 +47,7 @@ Primary facade:
 
 Supported public methods:
 
-- `create_server()`
+- `Pyro.create_server()`
 - `list_environments()`
 - `pull_environment(environment)`
 - `inspect_environment(environment)`