fix(responses-demo): make crash route recovery-aware (crash once, then recover)

The demo crash trigger (input='crash' -> os._exit(137)) did not check
context.is_recovery, so after a crash the durably re-delivered 'crash' input
re-fired the exit on every recovered lifetime — an infinite crash-loop for a
demo whose whole point is to crash ONCE and recover. Guard with
'not context.is_recovery' so the recovered run skips the crash and resumes to
completion. Also refreshes the azd env agent version pointer.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: RaviPidaparthi

sdk/agentserver/azure-ai-agentserver-responses/samples/durable-responses-agent-demo/.azure/durable-responses-agent-demo/.env

@@ -1,7 +1,7 @@
-AGENT_DURABLE_RESPONSES_AGENT_DEMO_ENDPOINT="https://rapida-0687-resource.services.ai.azure.com/api/projects/rapida-0687/agents/durable-responses-agent-demo/versions/30"
+AGENT_DURABLE_RESPONSES_AGENT_DEMO_ENDPOINT="https://rapida-0687-resource.services.ai.azure.com/api/projects/rapida-0687/agents/durable-responses-agent-demo/versions/31"
 AGENT_DURABLE_RESPONSES_AGENT_DEMO_NAME="durable-responses-agent-demo"
 AGENT_DURABLE_RESPONSES_AGENT_DEMO_RESPONSES_ENDPOINT="https://rapida-0687-resource.services.ai.azure.com/api/projects/rapida-0687/agents/durable-responses-agent-demo/endpoint/protocols/openai/responses?api-version=2025-11-15-preview"
-AGENT_DURABLE_RESPONSES_AGENT_DEMO_VERSION=30
+AGENT_DURABLE_RESPONSES_AGENT_DEMO_VERSION=31
 AI_PROJECT_DEPLOYMENTS="[{\\\"name\\\":\\\"gpt-4o\\\",\\\"model\\\":{\\\"name\\\":\\\"gpt-4o\\\",\\\"format\\\":\\\"OpenAI\\\",\\\"version\\\":\\\"2024-11-20\\\"},\\\"sku\\\":{\\\"name\\\":\\\"GlobalStandard\\\",\\\"capacity\\\":50}}]"
 AZURE_AI_ACCOUNT_ID="/subscriptions/47f1c914-e299-4953-a99d-3e34644cfe1c/resourceGroups/agents-westus2/providers/Microsoft.CognitiveServices/accounts/rapida-0687-resource"
 AZURE_AI_ACCOUNT_NAME="rapida-0687-resource"

sdk/agentserver/azure-ai-agentserver-responses/samples/durable-responses-agent-demo/src/durable-responses-agent-demo/main.py

@@ -231,8 +231,12 @@ async def handler(
     """
     topic = (await context.get_input_text()) or ""
 
-    # Demo-only crash trigger.
-    if DEMO_MODE and topic.strip().lower() in ("crash", "kill", "💥"):
+    # Demo-only crash trigger. Guarded by ``not context.is_recovery`` so the
+    # crash fires exactly once: on the recovered re-invocation the same
+    # (durably re-delivered) "crash" input is ignored and the handler resumes
+    # to completion — i.e. a crash-recovery demo that crashes once and then
+    # recovers, instead of crash-looping forever.
+    if DEMO_MODE and not context.is_recovery and topic.strip().lower() in ("crash", "kill", "💥"):
         logger.critical("CRASH triggered via input=%r — exiting in 300ms", topic)
 
         async def _crash() -> None: