fix: tighten binder/app route annotations (FastAPI/ModuleType); sync binder.pyi with signature; refresh MCP docs

openapi_first/binder.pyi

@@ -1,5 +1,11 @@
+from types import ModuleType
 from typing import Any
 
 from fastapi import FastAPI
 
-def bind_routes(app: FastAPI, spec: dict[str, Any], routes_module: Any) -> None: ...
+def bind_routes(
+    app: FastAPI,
+    spec: dict[str, Any],
+    routes_module: ModuleType,
+    security_deps: dict[str, list[Any]] | None = None,
+) -> None: ...