Feat/shield-subscription-crypto-approval

[tuna1207]

Explanation

Subscription controller listening for transaction event to handle subscription crypto approval to start shield subscription

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

---

Note

Adds submitShieldSubscriptionCryptoApproval to process shield approval transactions and start crypto subscriptions, with tests and transaction-controller integration.

• Subscription Controller
  • New method: submitShieldSubscriptionCryptoApproval(txMeta, isSponsored?) to handle TransactionType.shieldSubscriptionApprove and start crypto subscription, then refresh subscriptions.
  • Messaging: Registers ${controllerName}:submitShieldSubscriptionCryptoApproval action.
  • Validation: Errors for missing pricing, lastSelectedPaymentMethod, chainId/rawTx, non-crypto method, and missing product price.
• Types
  • Update StartCryptoSubscriptionRequest: remove smartTransactionId field.
• Tests
  • Add comprehensive tests for approval handling scenarios in src/SubscriptionController.test.ts.
  • Add tests/utils.ts with generateMockTxMeta helper.
• Build/Deps
  • Add dependency @metamask/transaction-controller and TS project references.
• Docs
  • Update CHANGELOG.md to document new public method.

^{Written by Cursor Bugbot for commit 55ca951. This will update automatically on new commits. Configure here.}

[lwin-kyaw]

Some minor changes.