T3-016: Transaction history from on-chain data

Track: 3 — Solana Phone / Web3
Section: Phase B: Wallet Integration via MWA (56h)
Status: [ ] Todo
Repo: app-user
Branch: feature/T3-016-tx-history-onchain
Estimated Hours: 4h

Done When

Wallet screen shows recent Solana transactions: date, type, amount, status. Fetched from Solana RPC getSignaturesForAddress

Notes

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