Both lived only in RAM: every archipelago restart/reboot wiped the whole
chat history (user-reported), and — worse — reset the per-target outbound
sequence counters, so peers' (sender_pubkey, sender_seq) dedup silently
dropped the first messages sent after a reboot as replays.
mesh-messages.json in the data dir (0600 — DM plaintext), restored in
MeshService::new before the listener spawns; a 5s debounced persister
task snapshots at one choke point instead of hooking every mutation path
(store, delivered/transport/encrypted stamps, edits, deletes, prunes).
Atomic write-then-rename; corrupt/missing file skips restore instead of
blocking mesh startup.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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