[suskozaver]

Reported by a user: backup, Erase everything, confirm, another backup, and the data was still there. Three times. On a synced device the erase was undone within seconds, every time.

Why it came back. resetAll wrote EMPTY_DATA over the store, settings included. settings.sync is where the device remembers which server version it last agreed with. Without it the device was an empty one that had never agreed with the server, which decideSync treats as a fresh install and answers by pulling the server's copy. The erase triggered a sync, and the sync put everything back.

The fix. resetAll keeps settings.sync and resets every other setting as before. The device stays in step with the server and holds a change, so the next run pushes the empty document and every other device on the account pulls it. I considered keeping the erase to this browser only and rejected it: on a synced device the account copy is the data, and erasing one browser is what signing out already does, with a check that the server holds everything first.

The warning above the button changes while sync is running, with a new string in en, de, sl and pl. The existing one promised "no copy anywhere else". That was untrue on a synced device and is the opposite of what now happens.

Rescue copy. The guard in setItem saw every record go, set them aside, and RescueNotice then offered them back. That guard is for losses nobody meant. A confirmed erase is the one deletion the app knows was meant, so it now goes the way wipeLocal does: no baseline to compare the write against, and any copy left over from an earlier attempt is removed. lastWritten is cleared before set, because the persist write that reads it starts inside set.

Tests. The new src/lib/store.test.ts checks that the store keeps the sync record and resets the rest, and that decideSync chooses push rather than pull for the state the erase leaves behind. Both fail without the change. The trap is written up in document/06-traps.md.

Checks: tsc --noEmit clean, next lint with no warnings, 1754 tests passing, also under TZ=America/New_York.

🤖 Generated with Claude Code

https://claude.ai/code/session_013mcSGbUb6y7ciu653EjmdX

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