Move the upload / gallery picker / blank canvas selector out of the
artcraft Tauri host and into @storyteller/ui-pagedraw so any host gets
the same selector chrome (including Help + Cost buttons) without
duplicating UI code. Hosts now only need to provide platform behaviour
(uploadImage, enqueue*, optional showToast); renderBaseImageSelector
becomes an opt-in override for fully custom selectors.
Tanish Manku
2cbfe7d292