fix: back off after ops claim errors

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a02b6f-7db1-7222-918b-e813a6bda38d

tests/test_claim_loop.py

@@ -7,7 +7,12 @@ from unittest.mock import MagicMock, patch
 from rein_aharness.approaches import ApproachResult, APPROACH_FI_RESEARCH_BRIEF
 from rein_aharness.claim_loop import process_one, poll_peek
 from rein_aharness.glas_execution import GLAS_APPROACH, GlasExecutionError
-from rein_aharness.ops_run_client import OpsRun, OpsRunConfig, ActivityCoreOpsClient
+from rein_aharness.ops_run_client import (
+    ActivityCoreOpsClient,
+    OpsRun,
+    OpsRunConfig,
+    OpsRunError,
+)
 
 
 def _claimed_run() -> OpsRun:
@@ -34,6 +39,16 @@ def test_process_one_empty() -> None:
     assert r.claimed is False
 
 
+def test_process_one_claim_error_requests_full_backoff() -> None:
+    client = MagicMock(spec=ActivityCoreOpsClient)
+    client.config = OpsRunConfig(worker_id="w", lease_seconds=90)
+    client.claim.side_effect = OpsRunError("upstream failed")
+    result = process_one(client)
+    assert result.claimed is False
+    assert result.empty is False
+    assert result.retry_full_interval is True
+
+
 def test_process_one_success_completes() -> None:
     client = MagicMock(spec=ActivityCoreOpsClient)
     client.config = OpsRunConfig(worker_id="w", lease_seconds=90)