Description

Optimizes selected CI workflows by using Yarn cache support for the EAS update dependency install and avoiding full-history checkouts where the jobs do not need repository history.

This leaves history-sensitive workflows unchanged, including feature-flag registry, merge-base, tag, branch-sync, and SonarCloud paths.

Validation:

• Parsed the changed workflow YAML files locally.
• Ran the requested workflow grep for fetch-depth: 0, actions/setup-node, yarn install --immutable, and selected git commands.
• Ran git diff --check.
• Ran actionlint on changed workflows, with pre-existing actions/*@v3 and disabled-job warnings ignored.
• Ran a diff-scoped Codex Security scan: no findings.

Changelog

CHANGELOG entry: null

Related issues

Refs: MCWP-592

Manual testing steps

N/A - workflow-only CI change.

Screenshots/Recordings

Before

N/A

After

N/A

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• I've completed the PR template to the best of my ability
• I've included tests if applicable
• I've documented my code using JSDoc format if applicable
• I've applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Performance checks (if applicable)

• I've tested on Android
  • Ideally on a mid-range device; emulator is acceptable
• I've tested with a power user scenario
  • Use these power-user SRPs to import wallets with many accounts and tokens
• I've instrumented key operations with Sentry traces for production performance metrics
  • See trace() for usage and addToken for an example

For performance guidelines and tooling, see the Performance Guide.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.