debug(backend): add info-level logging to AgentExecutorBlock event listener

Logs event receipt, skip reasons, and final output count to investigate
why sub-agent outputs are not reaching the parent during dry-run.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

autogpt_platform/backend/backend/blocks/agent.py

@@ -150,14 +150,19 @@ class AgentExecutorBlock(Block):
                 ExecutionStatus.TERMINATED,
                 ExecutionStatus.FAILED,
             ]:
-                logger.debug(
-                    f"Execution {log_id} received event {event.event_type} with status {event.status}"
+                logger.info(
+                    f"Execution {log_id} skipping event {event.event_type} status={event.status} "
+                    f"node={getattr(event, 'node_exec_id', '?')}"
                 )
                 continue
 
             if event.event_type == ExecutionEventType.GRAPH_EXEC_UPDATE:
                 # If the graph execution is COMPLETED, TERMINATED, or FAILED,
                 # we can stop listening for further events.
+                logger.info(
+                    f"Execution {log_id} graph completed with status {event.status}, "
+                    f"yielded {len(yielded_node_exec_ids)} outputs"
+                )
                 self.merge_stats(
                     NodeExecutionStats(
                         extra_cost=event.stats.cost if event.stats else 0,