fix(wallet-toolbox): complete every local copy of a proven txid

[ty-everett]

Production finding

A BRC-29 funding transaction was internalized concurrently by two recipient identities. The single proven_tx_reqs.notify.transactionIds JSON value ended with only two of the three local transaction IDs because concurrent read/merge/write updates were last-writer-wins. After Monitor acquired the proof, two transaction rows reached completed and the omitted recipient remained unproven even though its outputs were confirmed network UTXOs.

Fix

• treat the proven txid as authoritative for every local transaction row sharing it
• repair missing IDs in the durable notification set
• complete only local rows still missing the proof/status
• run the same repair when the proven_txs row already exists, so later Monitor events self-heal drift
• prepare @bsv/wallet-toolbox 2.4.2

Validation

• focused SQLite regression covers initial proof fan-out and later already-proven self-heal
• ts-standard passes for both changed TypeScript files
• wallet-toolbox TypeScript build passes
• focused Jest test passes

Production evidence: txid 2cdf4bb89c765d5b9fadef1c2bc4aceb2258ac607d0471e9df5f833bb08e6250; notify IDs omitted transaction 444915 while 444912 and 444918 completed.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[ty-everett]

Superseded by draft PR #283, which preserves this change and consolidates the complete production follow-up under the shared async Storage session headline. Please continue review on #283.