feat: add gitea agentic runtime control plane

engine/devops_agent/evidence.py

@@ -0,0 +1,16 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any
+
+
+def write_run_artifact(output_dir: str | Path, artifact: dict[str, Any]) -> Path:
+    destination = Path(output_dir)
+    destination.mkdir(parents=True, exist_ok=True)
+    artifact_path = destination / "run-artifact.json"
+    artifact_path.write_text(
+        json.dumps(artifact, ensure_ascii=False, indent=2),
+        encoding="utf-8",
+    )
+    return artifact_path