`agentcore invoke` local log always shows `Session ID: none` even when `--session-id` is provided

[jimhanmer]

Description

When using agentcore invoke with --session-id, the local CLI log files always record Session ID: none in the header. The session ID is correctly sent to Runtime (confirmed via CloudWatch GenAI Observability sessions console), so this is a logging-only issue.

Steps to Reproduce

1. Run agentcore invoke "Testing session ID logging" --session-id test-session-id-logging-000000001 --stream
2. Check the local log file in <project>/agentcore/.cli/logs/invoke/

Expected Behavior

Log header shows Session ID: test-session-id-logging-000000001.

Actual Behavior

Log header shows Session ID: none:

================================================================================
AGENTCORE INVOKE LOG
Agent: itresearchagent
Session ID: none
Started: 2026-04-19T10:43:13.160Z
================================================================================

[11:43:13.161] INVOKE REQUEST (Session: none)

--- REQUEST ---
{
  "timestamp": "2026-04-19T10:43:13.161Z",
  "agent": "itresearchagent",
  "runtimeArn": "arn:aws:bedrock-agentcore:eu-west-1:...",
  "region": "eu-west-1",
  "prompt": "Testing session ID logging"
}

The session ID does reach Runtime — it appears correctly in the CloudWatch GenAI Observability sessions view.

Related

• Session ID not returned after agentcore invoke --stream #664 — Session ID not returned after agentcore invoke --stream

CLI Version

0.9.1 (@aws/agentcore)

Operating System

macOS