fix(agents): stabilize runtime readback under transient pressure

apps/api/tests/test_ai_agent_autonomous_runtime_control.py

@@ -532,6 +532,8 @@ async def test_live_runtime_receipt_readback_returns_partial_when_query_budget_e
 async def test_log_controlled_writeback_consumer_timeout_returns_fallback(
     monkeypatch,
 ):
+    runtime_control_module._clear_runtime_receipt_readback_cache()
+
     async def _slow_consumer_readback(*, project_id: str):
         assert project_id == "awoooi"
         await asyncio.sleep(1)
@@ -548,9 +550,12 @@ async def test_log_controlled_writeback_consumer_timeout_returns_fallback(
         _slow_consumer_readback,
     )
 
-    readback = await runtime_control_module._load_log_controlled_writeback_consumer_readback(
-        project_id="awoooi",
-    )
+    try:
+        readback = await runtime_control_module._load_log_controlled_writeback_consumer_readback(
+            project_id="awoooi",
+        )
+    finally:
+        runtime_control_module._clear_runtime_receipt_readback_cache()
 
     assert readback["status"] == "blocked_waiting_controlled_writeback_consumer_receipts"
     assert "log_controlled_writeback_consumer_readback_unavailable" in readback[
@@ -559,6 +564,50 @@ async def test_log_controlled_writeback_consumer_timeout_returns_fallback(
     assert readback["readback"]["error_type"] == "TimeoutError"
 
 
+@pytest.mark.asyncio
+async def test_log_controlled_writeback_consumer_timeout_uses_cached_ready_readback(
+    monkeypatch,
+):
+    runtime_control_module._clear_runtime_receipt_readback_cache()
+    calls = 0
+
+    async def _sometimes_slow_consumer_readback(*, project_id: str):
+        nonlocal calls
+        assert project_id == "awoooi"
+        calls += 1
+        if calls == 1:
+            return _log_controlled_writeback_consumer_readback()
+        await asyncio.sleep(1)
+        return _log_controlled_writeback_consumer_readback()
+
+    monkeypatch.setattr(
+        runtime_control_module,
+        "_LOG_CONTROLLED_WRITEBACK_CONSUMER_TIMEOUT_SECONDS",
+        0.01,
+    )
+    monkeypatch.setattr(
+        runtime_control_module,
+        "load_latest_ai_agent_log_controlled_writeback_consumer_readback",
+        _sometimes_slow_consumer_readback,
+    )
+
+    try:
+        first = await runtime_control_module._load_log_controlled_writeback_consumer_readback(
+            project_id="awoooi",
+        )
+        second = await runtime_control_module._load_log_controlled_writeback_consumer_readback(
+            project_id="awoooi",
+        )
+    finally:
+        runtime_control_module._clear_runtime_receipt_readback_cache()
+
+    assert first["status"] == "controlled_writeback_consumer_readback_ready"
+    assert second["status"] == "controlled_writeback_consumer_readback_ready"
+    assert second["cache_fallback_active"] is True
+    assert second["record_quality"] == "cached_live_consumer_readback"
+    assert second["readback"]["cache_fallback_error_type"] == "TimeoutError"
+
+
 @pytest.mark.asyncio
 async def test_live_runtime_receipt_readback_uses_short_cache_to_protect_db_pool(
     monkeypatch,
@@ -1676,6 +1725,10 @@ def test_runtime_receipt_auxiliary_alert_query_partial_does_not_block_runtime_tr
         ],
         partial_query_failures=[
             {"query_name": "legacy_mcp_counts", "error_type": "DBAPIError"},
+            {
+                "query_name": "playbook_trust_counts",
+                "error_type": "RuntimeReceiptQueryBudgetExceeded",
+            },
             {"query_name": "alert_operation_counts", "error_type": "DBAPIError"},
             {
                 "query_name": "alertmanager_event_counts",