The Opus 4.6 launch promotional banner, extra usage promo text ("$50 free extra usage", "/extra-usage to enable"), and associated feed display logic have been cleaned up. The tengu_copper_lantern and tengu_silver_lantern feature flag checks and related UI components are removed.
Evidence
Removed functions (search for removed strings "Opus 4.6 is here", "$50 free extra usage")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
