Ship the final pet-generation UX polish (provider picker behavior, step-2 cancel flow, banner integration, and visual consistency) and make saturated-chroma background removal C-op driven so hatch processing no longer hammers the machine during long runs.
Add the in-window floating pet (sprite, speech bubble, contact shadow,
profile-scoped, resize-safe) and a pop-out always-on-top overlay window
with gestures and notifications. Add the Cmd+K pet picker page plus the
appearance gallery and size slider in settings. Includes the pet stores,
electron overlay wiring, i18n strings, and store tests.