Add xBull wallet support for desktop users

[Kalebtron1]

Why this matters

Desktop users should have more than one wallet option.

Problem

The current wallet flow is still too narrow for desktop wallets beyond the main provider.

Scope

• Add xBull as a supported wallet path.
• Keep the existing flow intact.
• Document how the new provider behaves on desktop.

Setup Steps

• Clone the repository and run npm install at the repo root.
• Run npm run dev on desktop and test the xBull path.
• Run npm run build before opening the PR.

File Paths

• src/wallet/WalletAdapter.ts
• src/wallet/index.ts
• src/wallet/FreighterAdapter.ts
• src/hooks/useWallet.tsx
• src/components/WalletSetupModal.tsx

Implementation guidance

• Add the provider-specific connection and signing logic.
• Keep the adapter interface consistent with the existing wallet flow.
• Make error handling explicit for connection failures.

Acceptance criteria

• xBull can connect and sign in the documented flow.
• Existing desktop wallet behavior still works after the change.
• The PR description explains what is supported and what is not.

Validation

• Connect, sign, and submit a transaction with xBull.
• Verify the current provider still works after the update.

PR requirements

• Include Closes #74.
• Include before/after behavior notes.

Complexity

• Medium (100 points)

[samkay-ops]

@samkay-ops has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would like to work on issue #74 Add xBull wallet support for desktop users because I have strong experience integrating multiple Stellar wallets including Freighter xBull and others in React/TypeScript frontends. I understand the importance of expanding desktop wallet options beyond the main provider while keeping existing flows intact. I will add xBull as a supported wallet path by implementing provider-specific connection and signing logic in WalletAdapter update index.ts useWallet hook and WalletSetupModal ensure consistent adapter interface and explicit error handling for connection failures. This will allow desktop users more wallet choices without breaking current behavior. I can start immediately deliver clean maintainable code with proper documentation and validation tests including connect sign and submit transaction with xBull while verifying existing providers still work. Ready to contribute!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @samkay-ops to this issue.