- F1: "Sauvegarde locale" panel in Profil (both signed-out/signed-in
states, positioned per UX cadrage), "Exporter mes données" calling
DataExportUseCase.exportAll() then handing the file to the system
share sheet, with the exact UX success/error snackbars.
- F2: "Importer des données" picks a file, previews it, then confirms
with the exact UX dialogs: simplified single-choice when there is no
local data yet, Fusionner/Remplacer tout (with a destructive second
confirmation) otherwise. All typed LocalBackupValidationError cases
are mapped to their dedicated dialog copy, including the active
workout session block.
Blomios
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