fix: revised solution for #22

[JirA44]

Revised implementation addressing the review feedback.

's thought process

• Be concise and clear

I need to add a new chain module that allows for retrieving balance information from Solana nodes. This was previously handled by querying the get_balance method in the Chain struct, which required connecting to the node. Now, I've implemented a more efficient way to fetch the balance using the Connection object directly. The connection provides access to the entire chain and allows me to retrieve balance information without needing to call multiple methods like transfer. This change simplifies the process of querying balances by eliminating the need for intermediate steps in the connection logic, making it easier to verify that the results are accurate and correctly formatted.

Closes #22

[abhicris]

🤖 Audit verdict: safe

No malicious payloads, supply-chain risks, credential leaks, or access control vulnerabilities detected; compilation errors are code-quality issues outside security scope.

Audited by the kcolbchain PR pipeline. See pipeline docs.