fix(core): attribute social and email logins to the app's project id

[skibitsky]

Adds the app's projectId to the Web Wallet URL opened for social/email login, so those logins are attributed to the app rather than to the Web Wallet's own project. Also encodes the query parameter values. Third-party wallet deep links are unchanged.

Ports reown-com/reown-dotnet#335.

yarn test in packages/core and packages/appkit: passing.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 4e18ff9

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

Name	Type
@reown/appkit-react-native	Patch
@reown/appkit-bitcoin-react-native	Patch
@reown/appkit-coinbase-react-native	Patch
@reown/appkit-common-react-native	Patch
@reown/appkit-core-react-native	Patch
@reown/appkit-ethers-react-native	Patch
@reown/appkit-solana-react-native	Patch
@reown/appkit-ui-react-native	Patch
@reown/appkit-wagmi-react-native	Patch

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[claude]

Claude finished @skibitsky's task in 1m 48s —— View job

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Code Review

• Read changed files
• Analyze diff
• Breaking changes subagent: no issues
• Data classification subagent: no issues

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Found 1 issue(s)

Issue 1: Encoding test uses values that don't need encoding

ID: corehelperutil-test-encoding-coverage-a3b1
File: packages/core/src/tests/utils/CoreHelperUtil.test.ts:21
Severity: LOW
Category: test-coverage

Context:

• Pattern: The "encoded provider" test uses 'google' as the provider — encodeURIComponent('google') === 'google', so the assertion passes regardless of whether encoding is applied.
• Risk: If encodeURIComponent were accidentally removed from the provider append, the test would still pass.
• Impact: Encoding behavior for special-character values is unverified.
• Trigger: A provider value (or projectId) containing +, =, &, #, etc. would produce a malformed URL undetected by tests.

Recommendation:

it('should URL-encode special characters in provider', () => {
  OptionsController.setProjectId('proj+id=1');
  const { redirect } = CoreHelperUtil.formatUniversalUrl(WEB_WALLET_URL, WC_URI, 'email+test' as SocialProvider);
  expect(redirect).toContain('provider=email%2Btest');
  expect(redirect).toContain('projectId=proj%2Bid%3D1');
});

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✅ No breaking changes. ✅ No data classification issues. The core fix (appending projectId and encoding both params) is correct and well-scoped — only the provider path is affected, third-party wallet deep links are untouched.