feat: back up the phone's photos to a group, once a day on Wi-FiHEADmain

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>

1 files changed, 45 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
index a25fb2e..013a2a5 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
@@ -1263,4 +1263,49 @@ export default {
   'native.node_account_confirm': 'The node on this computer is set up for {current}. Set it up for {next} instead? It will stop serving the groups it hosts for {current}.',
   'native.browser_access_confirm': 'Allow signing in from a browser? The application will leave your identity on every node you use, sealed so that only your passphrase together with your hub account can open it.',
   'native.declined': 'Cancelled — nothing was changed.',
+
+  // Photo backup, Android only (photo-sync.js, photo-sync-settings.js).
+  'photosync.heading': "Photo backup",
+  'photosync.intro': "Send the photos taken on this phone to a folder of one of your groups, once a day, on Wi-Fi. Photos deleted from the phone stay in the group.",
+  'photosync.setup': "Set up",
+  'photosync.change': "Change",
+  'photosync.turn_off': "Turn off",
+  'photosync.now': "Back up now",
+  'photosync.permission_needed': "MeshBay needs access to this phone's photos.",
+  'photosync.permission_allow': "Allow access",
+  'photosync.permission_partial': "Access is limited to the photos you selected: new photos will not be backed up until you allow access to all of them.",
+  'photosync.group': "Group",
+  'photosync.choose_group': "Choose a group",
+  'photosync.checking_group': "Looking at the group's folders…",
+  'photosync.group_offline': "No node hosting this group is online right now. Try again when it is.",
+  'photosync.no_folder': "This group has no folder you can add to that its Photos tab shows.",
+  'photosync.folder': "Folder",
+  'photosync.albums': "Albums on this phone",
+  'photosync.album_camera': "Camera",
+  'photosync.album_count': "{n} photos · {size}",
+  'photosync.scope_existing': "The photos already on this phone, then new ones",
+  'photosync.scope_new': "Only photos taken from now on",
+  'photosync.start': "Start backup",
+  'photosync.confirm': "Your photos will be sent to {group} (hosted by @{owner}, {members} members) into {folder}. Every member of this group will be able to see and download them.\n\n{count} photos ({size}) will be sent, then new ones once a day.\n\nYou can delete what you sent later, but not copies others have already downloaded.",
+  'photosync.confirm_new': "Your photos will be sent to {group} (hosted by @{owner}, {members} members) into {folder}. Every member of this group will be able to see and download them.\n\nNew photos will be sent once a day.\n\nYou can delete what you sent later, but not copies others have already downloaded.",
+  'photosync.metered_confirm': "You are on mobile data — {count} photos, {size}. Send them anyway?",
+  'photosync.summary': "{group} (@{owner}) → {folder}",
+  'photosync.other_account': "Set up for @{account}. Sign in as @{account} to continue it, or set it up again here.",
+  'photosync.sent_total': "Photos sent: {n}",
+  'photosync.last_run': "Last backup: {when}",
+  'photosync.never': "Not backed up yet",
+  'photosync.state_waiting_wifi': "Waiting for Wi-Fi",
+  'photosync.state_connecting': "Connecting to the group…",
+  'photosync.state_sending': "Sending {done} / {total}",
+  'photosync.state_offline': "No node hosting the group is online; it will try again later",
+  'photosync.state_interrupted': "Interrupted — it will carry on at the next chance",
+  'photosync.state_up_to_date': "Up to date",
+  'photosync.notif_progress': "Backing up photos — {done} / {total}",
+  'photosync.fail_disk_full': "Photo backup stopped: the node's disk is full.",
+  'photosync.fail_read_only': "Photo backup stopped: the folder no longer accepts uploads.",
+  'photosync.fail_no_folder': "Photo backup stopped: the folder no longer exists in the group.",
+  'photosync.fail_unavailable': "Photo backup stopped: the folder's drive is not connected to the node.",
+  'photosync.fail_not_member': "Photo backup stopped: you are no longer a member of this group.",
+  'photosync.fail_permission': "Photo backup stopped: MeshBay no longer has access to the photos.",
+  'photosync.fail_other': "Photo backup stopped.",
 };