feat(abstract-utxo): add Pearl fixed-script wallet surface

[manojkumar138]

Summary

Adds the Pearl (Duplex) fixed-script wallet surface to abstract-utxo, plus the sdk-coin-pearl registration shim. Follows #9347, which defined the coin in statics.

No utxo-lib changes — Pearl is served entirely through @bitgo/wasm-utxo. Per @OttoAllmendinger: no descriptors, no ordinals, no utxo-core, no utxo-bin.

PR 2 of 3. coinFactory / bitgo module wiring follows in PR 3 (CECHO-1792).

Changes

File	Change
abstract-utxo/src/names.ts	pearl / tpearl registered; Pearl added to getBaseNameFromMainnet
abstract-utxo/src/impl/pearl/	new — Pearl / Tpearl classes
abstract-utxo/src/impl/index.ts, src/index.ts	export the new impl
sdk-coin-pearl/	new package — re-export + register() shim
tsconfig.packages.json	register the new package
sdk-core/.../abstractUtxoCoinUtil.ts	actionable error for coins with no utxo-lib network
6 × package.json + yarn.lock	@bitgo/wasm-utxo ^4.21.1 → ^4.27.0

The coin classes are ~15 lines each, mirroring impl/ltc/.

Taproot-only comes for free

The TDD sketched a getSupportedScriptTypes() override. It isn't needed — AbstractUtxoCoin.supportsAddressType() already delegates to wasm:

supportsAddressType(addressType: ScriptType2Of3): boolean {
  return fixedScriptWallet.supportsScriptType(this.name, addressType);
}

and wasm-utxo 4.27.0 reports only the taproot types for Pearl. Verified — abstract-utxo's p2tr spelling resolves correctly against wasm's p2trLegacy:

pearl p2sh -> false    p2shP2wsh -> false    p2wsh -> false
pearl p2tr -> true     p2trMusig2 -> true

supportsAddressChain() inherits this, so chains 30/31/40/41 are supported and 0/1/10/11/20/21 are not. Both are pinned in the new test rather than left implicit, so a regression in either layer is caught.

Why all six wasm-utxo bumps

Bumping abstract-utxo alone left two ranges in play, and yarn resolved two copies of the wasm binary — 4.27.0 nested under abstract-utxo, 4.21.1 hoisted at the root. Aligning all six collapses it to a single hoisted 4.27.0. The lockfile diff is one entry.

This is a dependency-hygiene change, not Pearl support being added to utxo-core / utxo-bin — no code in those packages changed.

sdk-core — deliberately not fully fixed

getUtxoCoinScriptTypes2Of3() and getUtxoCoinScriptTypesForWalletType() resolve statics' utxolibName into a utxo-lib network:

const network = utxolib.networks[coin.network.utxolibName as utxolib.NetworkName];

For Pearl that is undefined, and the code then threw a bare TypeError: invalid network. It now throws:

coin pearl has no utxo-lib network (utxolibName=pearl).
Script types for wasm-only coins must be resolved through @bitgo/wasm-utxo.

I stopped there rather than routing these through wasm, because sdk-core does not depend on @bitgo/wasm-utxo and adding a WASM binary to a core package is an architectural decision with bundle-size consequences for every consumer — not mine to make in this PR. There are no in-repo callers; both functions are public API consumed by wallet-platform / bitgo-ui. @OttoAllmendinger this is the spot that matters for WP onboarding — happy to take whichever direction you prefer (wasm dep in sdk-core, a lookup table, or handling it WP-side).

Test coverage

New abstract-utxo/test/unit/impl/pearl/unit/index.ts (7 tests), following the impl/btg convention: instantiation, chain, full name, testnet inheritance, taproot-only script types, taproot-only address chains, and an explicit assertion that no utxo-lib network exists for Pearl — no other checked-in coin has that profile, so it can't be inferred from an existing coin.

Pearl is deliberately not added to the shared utxoCoins fixtures. That infrastructure maps coin names to utxo-lib networks (getNetworkForCoinName throws for unknown coins, and getUtxoCoins() sorts by utxolib.getNetworkList() position), so Pearl has nothing to point at. Adding it would have meant reworking test infra shared by 17 suites, 8 of which resolve a utxolib network. The dedicated suite covers what this PR actually adds.

RecoveryProvider.forCoin is also left without a Pearl case — Blockchair has no Pearl support, and the existing fallthrough already throws ApiNotImplementedError, which is the correct outcome rather than a silent wrong provider.

Verification

Module	Result
abstract-utxo	1552 passing (1545 → +7)
sdk-core	530 passing
statics	32269 passing
utxo-core	239 passing
utxo-bin	237 passing
utxo-descriptors	35 passing
utxo-ord	173 passing
utxo-staking	59 passing

Zero failures. abstract-utxo, sdk-coin-pearl, sdk-core, and all five wasm dependents build clean. Prettier clean; eslint clean (0 errors). Verified end-to-end that sdk-coin-pearl re-exports both classes and register is callable, and that getFullNameFromCoinName yields Pearl / Testnet Pearl.

Related

• PR 1: feat(statics): add Pearl to statics #9347 (merged) — statics
• PR 3: CECHO-1792 — coinFactory + bitgo module wiring
• ims-utxo: CECHO-1768 — both PRs merged
• TDD: Duplex/Pearl full onboarding, §9 Phase 6

TICKET: CECHO-1791

🤖 Generated with Claude Code

[linear-code]

CECHO-1791

[manojkumar138]

CI status: blocked only on npm package creation

Everything substantive is green. The single real failure is verify-npm-packages, with all-checks failing downstream of it:

Check	Result
unit-test (20.x / 22.x / 24.x)	✅ pass
code-quality (lint / format / dependencies / commit-lint)	✅ pass
docker-build	✅ pass
verify-npm-packages	❌ fail
all-checks	❌ fail (aggregate — fails only because of the above)

These packages must be created on npm before publishing with trusted publishing.

1 package(s) not found on npm:

  - @bitgo/sdk-coin-pearl (modules/sdk-coin-pearl)

This is a prerequisite for any new package rather than something fixable in the diff: .github/actions/verify-npm-packages requires every non-private package to already exist on the registry, because npm trusted publishing needs the package created and its publisher configured up front.

Confirmed both scopes are missing, not just the one CI reports:

@bitgo/sdk-coin-pearl       -> NOT FOUND
@bitgo-beta/sdk-coin-pearl  -> NOT FOUND

# control
@bitgo/sdk-coin-btc         -> 2.13.27
@bitgo-beta/sdk-coin-btc    -> 1.0.1

Raised VL-7329 (assigned to @andyfischer-bitgo, Velocity / BitGoJS Trusted publishing) to create both packages and configure GHA as trusted publisher — same request as VL-6005 for sdk-coin-starknet. No change to this PR is needed once that lands; the check should pass on a re-run.

The alternative would be marking the package "private": true to force the gate green, but that makes it unpublishable and would leave PR 3's wiring pointing at something consumers can't install — so I'd rather wait for the npm setup than hide it.

[pranishnepal]

1 package(s) not found on npm:

  - @bitgo/sdk-coin-pearl (modules/sdk-coin-pearl)

CI's red and drafted - unsubscribing

[OttoAllmendinger]

lgtm but check CI errors