feat: inter-mint transfer op with fee quote and ambiguity-safe outcomes

src/lnurlcash/ops.ts

@@ -22,6 +22,8 @@
 //   ops/mint.ts          - prepareMint / claimMintedNote (receive over Lightning)
 //   ops/receiveBearer.ts - receiveBearer (receive a note, rotate on receive)
 //   ops/pay.ts           - payWithBearers (melt to bolt11 / Lightning Address)
+//   ops/transfer.ts      - transferBetweenMints (inter-mint move: melt at
+//                          source, mint + claim + rotate at target)
 //   ops/shared.ts        - bounded verify polling, UncertainOutcomeError
 
 export {UncertainOutcomeError} from './ops/shared'
@@ -33,3 +35,11 @@ export type {PreparedMint, ClaimedNote} from './ops/mint'
 export {receiveBearer} from './ops/receiveBearer'
 export {payWithBearers} from './ops/pay'
 export type {PayOutcome, PayResult, PayOptions} from './ops/pay'
+export {transferBetweenMints} from './ops/transfer'
+export type {
+  TransferClaimMaterial,
+  TransferOptions,
+  TransferOutcome,
+  TransferQuote,
+  TransferResult
+} from './ops/transfer'