A "Choose Image…" row joins "Other…" beside the background palette, live
only when the Style… popover is aimed at the board (background.image is a
board-root field — lanes and cards carry no such key to write). A standard,
image-restricted NSOpenPanel hands the pick to BoardStore.applyChosenBackground,
which copies the bytes into .backgrounds/ under the file's own name — Finder-
laddered on collision, overwritten in place on a repeat pick — points
background.image at the copy, and leaves background.color exactly as it was,
the same posture Paste as Board Background already carries. The existing
repoint tidy trims a superseded .backgrounds/ file automatically; nothing
about it needed to change.
Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy
rzen
aa8c54fc7a