message: extract privacy tokens from LID-addressed conversations

[Wormey1o]

Problem

storeHistoricalMessageSecrets (in message.go) filters tcToken extraction to chatJID.Server == types.DefaultUserServer. Accounts that have migrated to LID addressing store their 1:1 chats under types.HiddenUserServer, so the history-sync payload yields zero privacy tokens for those chats.

The downstream effect on a freshly-paired companion device:

• Receive path works (no tctoken required on inbound).
• Group sends work (sender-key broadcast doesn't require a per-peer token).
• 1:1 sends fail — the companion has no valid tctoken for the LID peer, the server returns stanza error 463, and the send is rejected.

The pre-existing tokens on the primary device stay on the primary; only new outbound tokens from the primary propagate to companions via app-state sync. For accounts that haven't sent anything recently, the companion has no path to obtain tokens at all — the bridge is effectively stuck on inbound-only for 1:1.

Fix

Include HiddenUserServer in the filter so LID-addressed chats get the same treatment as DefaultUserServer chats. One-line change.

if (chatJID.Server == types.DefaultUserServer || chatJID.Server == types.HiddenUserServer) && conv.GetTcToken() != nil {

Repro

1. Pair a fresh whatsmeow companion against a WA account that uses LID addressing (any account whose 1:1 chats now show @lid JIDs — practically every post-LID-migration account).
2. Wait for history sync to complete.
3. From the companion, try SendMessage to a 1:1 LID peer that the user has previously messaged from the primary.
4. WA returns stanza error 463.

After this patch and a re-pair, history sync extracts the tokens and the same send succeeds.

Notes

• No behavioural change for DefaultUserServer chats.
• No new dependency; same single comparison, OR'd with the LID-server case.
• Verified end-to-end on a self-hosted bridge — re-pairing the same companion under the patched code produced three privacy tokens (matching the three expected LID peers) and 1:1 sends to all three succeeded.

[zennn08]

nc work