Checkpoint experiments through SWE pilot v2

pyproject.toml

@@ -18,6 +18,14 @@ dependencies = [
     "httpx>=0.28.1",
 ]
 
+[project.optional-dependencies]
+# Kept out of the LiveCodeBench environment. Install only for the free SWE-bench
+# infrastructure validator documented in docs/swe-validation.md.
+swe = [
+    "docker==7.2.0",
+    "swebench==4.1.0",
+]
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"