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The Android application sends the photos taken on the phone to one folder of
one group chosen by the member (docs/MESHBAY_DESIGN.md §9.12). The phone lists
MediaStore, keeps a ledger of what was sent and hands each photo's bytes to the
page by an opaque token on the packaged origin; the page decides when a run is
due and uploads through the existing path, one photo at a time under a slot.
- Once a day from the last finished run, on an unmetered network only;
"Back up now" asks first on mobile data. Leaving Wi-Fi stops after the file
in flight.
- Photos already on the phone are sent by default, newest first, under
<folder>/YYYY/MM; edits are sent beside the original as -edited-<date>.
- Additive by construction: nothing is ever deleted, renamed or replaced on
the node, and a photo deleted on the node is not sent again.
- A confirmation names the group, owner, members, folder and size when the
destination or starting point changes; a lasting refusal (disk full, folder
read-only or gone, no longer a member) is said once and retried a day later.
- No ACCESS_MEDIA_LOCATION, so the platform redacts photo locations.
- A dataSync foreground service keeps a run going with the screen off.
HEIC/HEIF photos are sent but not shown in Photos yet (§15.2).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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