feat: Experimenta pay x420

[maxsch-xmint]

Description

Add an experimental_payX402 method to our wallets SDK. Only supporting farameter so far.
Updated solana's web3 sdk, that's why there are so many package updates

Important files to review:
packages/wallets/src/wallets/wallet.ts
packages/wallets/src/x402/faremeter.ts

Test plan

Added a dashboard to easily test facilitators.

Package updates

"@crossmint/client-sdk-walletconnect": patch
"@crossmint/client-sdk-react-native-ui": patch
"@crossmint/wallets-quickstart-devkit": patch
"expo-demo": patch
"@crossmint/client-sdk-react-ui": patch
"@crossmint/auth-ssr-nextjs-demo": patch
"@crossmint/client-sdk-nextjs-starter": patch
"@crossmint/client-sdk-base": patch
"@crossmint/common-sdk-base": patch
"@crossmint/wallets-sdk": patch

Prompt To Fix All With AI

This is a comment left during a code review.
Path: packages/client/ui/react-ui/src/providers/dynamic/DynamicWalletProvider.tsx
Line: 95

Comment:
**Unsafe `as VersionedTransaction` cast after Solana web3.js update**

The Solana web3.js version bump appears to have changed the return type of `signer.signTransaction`, requiring this cast to silence the TypeScript error. However, `as VersionedTransaction` is an unchecked assertion — if the Dynamic SDK's signer still returns the older `VersionedTransaction` shape (or a `Transaction` type), the cast will succeed at compile time but downstream callers that rely on the new `VersionedTransaction` interface (e.g., methods like `serialize()`) could behave incorrectly or throw at runtime.

Before merging, please verify that the version of `@dynamic-labs/solana` in use has been updated to be compatible with the new `@solana/web3.js` version, so that `signTransaction` actually returns a compatible `VersionedTransaction`. If the Dynamic SDK hasn't been updated yet, a runtime type guard would be safer here:

```ts
const signed = await signer.signTransaction(transaction);
if (!(signed instanceof VersionedTransaction)) {
    throw new Error("Signer returned an unexpected transaction type");
}
return signed;
```

How can I resolve this? If you propose a fix, please make it concise.

_{Last reviewed commit: da395c8}

Greptile also left 1 inline comment on this PR.

[changeset-bot]

🦋 Changeset detected

Latest commit: da395c8

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

This PR includes changesets to release 17 packages

Name	Type
@crossmint/client-sdk-walletconnect	Patch
@crossmint/client-sdk-react-native-ui	Patch
@crossmint/wallets-quickstart-devkit	Patch
expo-demo	Patch
@crossmint/client-sdk-react-ui	Patch
@crossmint/auth-ssr-nextjs-demo	Patch
@crossmint/client-sdk-nextjs-starter	Patch
@crossmint/client-sdk-base	Patch
@crossmint/common-sdk-base	Patch
@crossmint/wallets-sdk	Patch
@crossmint/client-sdk-auth	Patch
@crossmint/client-sdk-react-base	Patch
@crossmint/client-sdk-verifiable-credentials	Patch
@crossmint/client-sdk-smart-wallet	Patch
@crossmint/common-sdk-auth	Patch
@crossmint/server-sdk	Patch
crossmint-auth-node	Patch

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[github-actions]

🔥 Smoke Test Results

✅ Status: Passed

Statistics

• Total Tests: 5
• Passed: 5 ✅
• Failed: 0
• Skipped: 0
• Duration: 5.64 min

✅ All smoke tests passed!

All critical flows are working correctly.

---

This is a non-blocking smoke test. Full regression tests run separately.