Sollervir acbf01e — Merged the Grade Upgrade and Grade Awakening shops into one panel, in response to player feedback that the game is fun but feels complex. They used to be separate buttons and separate overlays even though both do the same thing (make a grade stronger) — now each grade's card shows its gold level-up (this run only) and its two Golden Carrot awakenings (attack/speed, permanent) together, with one description explaining the run-only vs. permanent distinction up front. No balance numbers changed. 219/219 tests, clean release-check.