Adds workflow_check.py: a read-only diagnostic that queries current network settings and firmware versions (IOM + Fabric Card) from both IOMs. Accessible via a new main menu option (3 — System Check); Exit moves to option 4. Supports both serial console (curl over the serial session) and direct network (HTTPS to management IP) connection methods. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>