PROBLEM: Original Step 7 script was buggy - agent would die on logout
SOLUTION: Rewritten Step 7 with proper ssh-agent persistence that:
- Detects existing running agents and reuses socket
- Persists socket location across shell sessions
- Auto-loads SSH key on new terminals
- Works reliably across multiple terminal windows
Key changes:
- Saves SSH_AUTH_SOCK to ~/.ssh/agent.sock for persistence
- Auto-adds key if not already loaded
- Includes simpler fallback version if complex version fails
- Detailed troubleshooting section
- Clear instructions on placement in ~/.bashrc
Agent now stays loaded for the entire user session duration.
