feat(snap-account-service): add migration logic + keyring v2 support#8732
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Explanation
Add migration logic to migrate from the legacy Snap keyring to the new architecture with 1 Snap keyring v2 per Snaps.
Also enhance
:ensureReadyso consumers can safely call:withKeyringV2to get the associated Snap keyring v2 instance before using it.References
N/A
Checklist
Note
High Risk
High risk because it changes Snap keyring selection, migration, and selected-account forwarding across keyrings, which can affect account availability and Snap message routing during startup and resync flows.
Overview
Adds a concurrency-safe migration in
SnapAccountServiceto move accounts from the legacy global Snap keyring into per-SnapSnapKeyringv2 instances, removes the legacy keyring afterward, and makesensureReadyrun migration + auto-create a missing v2 keyring for the requested Snap.Updates Snap message delegation and selected-account forwarding to target v2 keyrings via
KeyringController:withKeyringV2/withKeyringV2Unsafe, including filtering selected accounts to only those owned by each Snap and special-casingGetSelectedAccounts.Migrates
multichain-account-serviceSnap providers to usewithKeyringV2and the@metamask/eth-snap-keyring/v2API (includingdeleteAccountand updatedcreateAccount(s)signatures), and bumps@metamask/eth-snap-keyringto^22.1.0across affected packages.Reviewed by Cursor Bugbot for commit 61b8446. Bugbot is set up for automated code reviews on this repo. Configure here.