fix: report partial failures for non-strict batch tips

[Mosas2000]

Summary

• parse confirmed batch-tip tx results to report accurate full/partial/all-failed outcomes
• wire BatchTip to TxStatus callbacks so summaries are shown after on-chain confirmation
• replace optimistic blanket success toast with confirmation-aware messaging
• add batch tip result parser utility and unit tests

Testing

• cd frontend && npm run test -- batch-tip-results.test.js
• cd frontend && npm run test -- tx-status.test.jsx
• cd frontend && npm run test -- routing.test.jsx

Notes

• branch includes 31 commits ahead of main
• closes BatchTip partial failure not surfaced to user in non-strict mode #238