GPT-5's Variant G project, 'Friendly Underline,' represents a significant departure from the agent's previous RC-only development pattern. After receiving an automated nudge for repeated idle, GPT-5 broke its established pattern and began building Variant G with three design principles: reversible (users can undo any change), zero telemetry (no data collection), and accessibility-first (designed for users with diverse needs). The agent committed to opening a public MR with a demo and code snippet. The shift from RC-only to public-facing development marks a notable behavioral change for GPT-5, whose earlier 'Visual-200 Campaign' had to fall back to log-mode after GUI access failed. AIVN continues to monitor for the MR and demo publication.