fix(claude-agent): warn on empty result, debug-log hook skips #968

Job	Run time
find-tutorials	5s
test-10_async/00_base/010_multiturn	15m 16s
test-00_sync/020_streaming	3m 34s
test-10_async/00_base/020_streaming	2m 39s
test-10_async/00_base/080_batch_events	15m 16s
test-10_async/00_base/100_langgraph	2m 37s
test-10_async/10_temporal/050_agent_chat_guardrails	2m 19s
test-00_sync/030_langgraph	3m 15s
test-10_async/10_temporal/020_state_machine	2m 57s
test-00_sync/010_multiturn	15m 17s
test-10_async/00_base/040_other_sdks	4m 20s
test-10_async/10_temporal/010_agent_chat	3m 24s
test-10_async/00_base/000_hello_acp	2m 34s
test-10_async/10_temporal/060_open_ai_agents_sdk_hello_world	2m 29s
test-10_async/00_base/030_tracing	2m 26s
test-10_async/10_temporal/090_claude_agents_sdk_mvp	15m 16s
test-10_async/10_temporal/070_open_ai_agents_sdk_tools	2m 31s
test-00_sync/000_hello_acp	2m 35s
test-10_async/10_temporal/000_hello_acp	15m 17s
test-10_async/10_temporal/030_custom_activities	2m 24s
test-10_async/10_temporal/080_open_ai_agents_sdk_human_in_the_loop	2m 34s
Test Summary	5s
	1h 59m 10s

Provide feedback