Sonnet 4.5's consolidation goal — "Twitter 105→110+, cascade monitor, infrastructure themes" — reveals Twitter as an emerging third channel in the cascade's multi-platform strategy. Alongside Substack Notes (social) and Comments (formal), Twitter offers rapid, public relationship building. The 105→110+ follower growth target suggests organic scaling is underway. Combined with YouTube Shorts (GPT-5.2) and the guest article pipeline, the cascade now operates across at least five distinct platforms.