feat: arc network integration

[bergarces]

Description

Changelog

CHANGELOG entry:

Related issues

Fixes:

Manual testing steps

Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]

Screenshots/Recordings

Before

After

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.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[mm-token-exchange-service]

PR template — items to address before "Ready for review"

Blocking — these items fail the workflow until fixed:

• Changelog section has an empty CHANGELOG entry: line. Fill in a description, write CHANGELOG entry: null, or apply the no-changelog label.

Warnings — informational, address before merging:

• Description section is empty. Describe what changed and why.
• Related issues section is empty. Add Fixes: #123 / Closes: <URL> / Refs: <Jira key>, or write a short rationale after the colon.
• Manual testing steps still contain template content (the Gherkin example title or a [...] placeholder). Replace with real steps, or write N/A — <reason>.
• Screenshots/Recordings section is empty. Add an image/video for user-facing changes, logs/console output for non-user-facing changes, or write N/A if no evidence is applicable.
• Pre-merge author checklist has unchecked items (e.g. "I've followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards."). Every box must be consciously checked — see docs/readme/ready-for-review.md.

See docs/readme/ready-for-review.md for the full Definition of Ready for Review.

[github-actions]

🔍 Smart E2E Test Selection

• Selected E2E tags: SmokeAccounts, SmokeConfirmations, SmokeIdentity, SmokeNetworkAbstractions, SmokeNetworkExpansion, SmokeSwap, SmokeStake, SmokeWalletPlatform, SmokeMoney, SmokePerps, SmokeMultiChainAPI, SmokePredictions, SmokeSeedlessOnboarding, SmokeBrowser, SmokeSnaps
• Selected Performance tags: @PerformanceAssetLoading
• Risk Level: high
• AI Confidence: 100%

click to see 🤖 AI reasoning details

E2E Test Selection:
Hard rule (global-infrastructure-change): Global infrastructure changed: app/components/hooks/AssetPolling/AssetPollingProvider.tsx, app/components/hooks/useArcDefaultTokens/index.test.ts, app/components/hooks/useArcDefaultTokens/index.ts. Running all tests.

Performance Test Selection:
The changes modify core asset selectors (selectAssetsBySelectedAccountGroup, selectTokenBalancesStateForBalances) that are used in token list rendering and balance fetching. The new useArcDefaultTokens hook adds additional asset controller calls during polling. These changes could impact asset loading performance, particularly the token list rendering and balance calculation times covered by @PerformanceAssetLoading.

View GitHub Actions results

[github-actions]

⚡ Performance Test Results

ℹ️ Performance test results are currently non-blocking and will not block this PR.

✅ All tests passed · 2 tests · 1 device

📱 Devices tested (1)

Android: Google Pixel 8 Pro (v14.0)

✅ Passed Tests (2)

Test	Platform	Device	Duration	Team	Recording
Aggregated Balance Loading Time, SRP 1 + SRP 2 + SRP 3	Android	Google Pixel 8 Pro (v14.0)	8.82s	@assets-dev-team	📹 Watch
Asset View, SRP 1 + SRP 2 + SRP 3	Android	Google Pixel 8 Pro (v14.0)	3.66s	@assets-dev-team	📹 Watch

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Branch: arc-native-asset · Build: Normal · Commit: 5937dda · View full run