feat(LLD): LLD MSW for MAD DADA

[ejaycoleman]

✅ Checklist

• npx changeset was attached.
• Covered by automatic tests.
  • N/A - implements mocking to enable testing
• Impact of the changes:
  • pnpm dev:lld:msw starts LLD with MSW to intercept mocks. Handlers defined in apps/ledger-live-desktop/src/mocks/browser.ts

📝 Description

Implements MSW for use within MAD/DADA development

Testing with #11334:

pnpm dev:lld	pnpm dev:lld:msw

❓ Context

• JIRA or GitHub link: LIVE-20566

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🧐 Checklist for the PR Reviewers

• The code aligns with the requirements described in the linked JIRA or GitHub issue.
• The PR description clearly documents the changes made and explains any technical trade-offs or design decisions.
• There are no undocumented trade-offs, technical debt, or maintainability issues.
• The PR has been tested thoroughly, and any potential edge cases have been considered and handled.
• Any new dependencies have been justified and documented.
• Performance considerations have been taken into account. (changes have been profiled or benchmarked if necessary)

[vercel]

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4 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
ledger-live-github-bot	Ignored	Preview		Aug 21, 2025 11:11am
native-ui-storybook	Ignored	Preview		Aug 21, 2025 11:11am
react-ui-storybook	Ignored	Preview		Aug 21, 2025 11:11am
web-tools	Ignored	Preview		Aug 21, 2025 11:11am

[live-github-bot]

Desktop Bundle Checks

Comparing f925ee7 against 0247bda.

⚠️ renderer bundle size significantly increased: 43.1mb -> 43.4mb. Please check if this is expected.
⚠️ outvariant library is now duplicated in renderer (regression)
⚠️ path-to-regexp library is now duplicated in renderer (regression)

[sonarqubecloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud