v1.4.0 — NEAR, Bitcoin PSBT, XRPL signing

Highlights

• NEAR Protocol support — Ed25519 + Borsh + NEP-413 (#221)
• Bitcoin PSBT signing via sign_transaction (#201)
• XRPL signing hardening — sign the digest with k256 so leading-zero keys no longer fail (#233); inject SigningPubKey in the signer so callers pass unsigned transactions (#234)
• x402 usage-based settlement example + examples driven through the ows CLI (#212, #231, #207, #206)
• CLI — clearer "payment rejected by server" on x402 4xx (#191)

What's Changed

• chore: bump version to 1.3.2 by @svc-sre in #214
• feat: add NEAR Protocol chain support (Ed25519 + Borsh + NEP-413) by @0xultravioleta in #221
• docs: add policy-engine-implementation.md by @ygd58 in #206
• examples: add x402 payment and agent policy examples by @ygd58 in #207
• fix(examples): drive x402 examples through the ows CLI by @0xultravioleta in #231
• examples: add x402 usage-based settlement guide by @ygd58 in #212
• fix: only print "Paid" on successful x402 payment response by @Sertug17 in #191
• feat(bitcoin): add PSBT signing via sign_transaction by @dolepee in #201
• fix(xrpl): sign the digest with k256 so leading-zero keys don't fail by @0xultravioleta in #233
• feat(xrpl): inject SigningPubKey in signer so callers pass unsigned transactions by @Patel-Raj11 in #234

New Contributors

• @0xultravioleta made their first contribution in #221
• @ygd58 made their first contribution in #206

Full Changelog: v1.3.2...v1.4.0