### 🧪 Add component tests for BalanceCard

[El-swaggerito]

Overview
The BalanceCard component should render balance data clearly and handle loading or empty states.

Requirements

• Test normal balance display
• Test loading state
• Test zero balance state
• Test formatting behavior

Acceptance Criteria

• BalanceCard renders correctly in all states
• Tests are readable and maintainable
• Component behavior is documented through tests

Labels: testing, ui

[legend4tech]

@legend4tech has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hi am legend4tech a fullstack developer, and a top Open source Contributor (former Fellow at onlydust) I will love to work on this issue. Looking forward to be assigned.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @legend4tech to this issue.