Update wingman script to launch monitors automatically

[yossiovadia]

Task

Modify claude-wingman.sh to automatically start monitoring when creating a new session (unless auto-approval is enabled).

Implementation

• Launch monitor-session.sh in background when session is created
• Store monitor PID for later cleanup
• Skip monitoring if --auto-approve flag is used
• Add --supervised flag (default) vs --auto-approve flag
• Clean up monitor process when session ends

Acceptance Criteria

• Monitor launches automatically with new sessions
• Auto-approve mode skips monitoring
• Monitor PID is tracked properly
• Cleanup works correctly

Related

Part of #8, depends on #9