Two mesh fixes bundled so the deploy lands them together:
Doubled messages (radio + federation): dedup at store_message now runs
a third cross-transport check keyed on (sender_seq, plaintext, 120s).
The existing (sender_pubkey, sender_seq) match missed the common case
where the same envelope arrives via LoRa radio (sender_pubkey looked
up from the firmware key) and again via Tor federation (sender_pubkey
= archipelago ed25519), because the two lookups disagree. The new
cross-transport match closes that gap without loosening legacy paths.
Stale contacts after clear-all: meshcore's on-device contact table is
persistent and reads back into peers on the next refresh_contacts, so
the previous "nuclear" clear wiped app state for a few seconds before
the old rows reappeared. New persistent `radio_contact_blocklist`
(mesh-ignored-radio-contacts.json) captures the pubkeys present at
clear-time; `refresh_contacts` filters them on read and the filter
survives restart. Federation-synthetic peers are excluded from the
snapshot so the list rebuilds normally on the next gossip.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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