all Dialog/AlertDialog removed from widgets, data-sources, presets,
layout-builder pages. replaced with inline card expansion for
edit/create and inline confirm bars for delete.
data source form: live clock format preview with 1s tick, timezone
validation against Intl.supportedValuesOf.
layout preview: fetches live widget data via useWidgetPreview, renders
formatted content based on display_hint kind instead of widget names.
Gabriel Kaszewski
b964801765