Task 007 add agent job admin runner follow-up

apps/runner/src/application/fake_runner.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import json
+import os
 import shutil
 import time
 from pathlib import Path
@@ -90,6 +91,34 @@ def run_fake_runner_once(
     )
 
 
+def run_fake_runner_loop(
+    *,
+    backend_url: str,
+    workspace_root: Path,
+    poll_interval_seconds: float,
+) -> None:
+    backend_client = HttpBackendJobClient(backend_url)
+    while True:
+        try:
+            run_fake_runner_once(backend_client, workspace_root=workspace_root)
+        except Exception:
+            pass
+        time.sleep(poll_interval_seconds)
+
+
+def get_backend_url() -> str:
+    backend_url = os.environ.get("BACKEND_URL")
+    if not backend_url:
+        raise RuntimeError("BACKEND_URL is required for fake runner")
+    return backend_url
+
+
+def get_workspace_root() -> Path:
+    return Path(
+        os.environ.get("RUNNER_WORKSPACE_ROOT", "/tmp/pipeline-runner-workspaces")
+    )
+
+
 def materialize_fake_workspace(
     job: dict[str, Any],
     *,