It would be helpful to add some structured logs in key places so we can track protocol activity over time. Not urgent, but would make indexing and analytics easier down the road.

Potential places for logs:

• Deposits
• Withdrawals
• Rewards distribution
• Exchange rate updates (in update_vault_balance)
• State changes (Vault, Operator, NCN) etc

Simple example:

// Simple native log with msg macro (can use encoding for optimization)
msg!("DEPOSIT: {} lamports from {}", amount, user_pubkey);

##References
https://www.anchor-lang.com/docs/features/events
https://solana.stackexchange.com/questions/19585/how-to-emit-events-from-native-rust-solana-program

Not a high priority, but something to consider for future improvements. Happy to help with this!