privacy-boost shield \
  --token 0x4200000000000000000000000000000000000006 \
  --amount 1.0 \
  --human

Deposit submitted!
Transaction: 0x1234...5678
Commitment: 0xabcd...ef01
Waiting for confirmation...
Deposit confirmed in block 12345678

use privacy_boost_cli::PrivacyBoostCLI;

let result = sdk.shield(
    "0x4200000000000000000000000000000000000006",
    "1000000000000000000", // 1 token in wei
)?;
println!("Deposit TX: {}", result.tx_hash);
println!("Commitment: {}", result.commitment);

pub struct ShieldResult {
    pub tx_hash: String,
    pub commitment: String,
}

privacy-boost shield \
  --token 0x0000000000000000000000000000000000000000 \
  --amount 1.0 \
  --human

# Human-readable (with --human flag)
privacy-boost shield --token $TOKEN --amount 1.5 --human

# Wei (default)
privacy-boost shield --token $TOKEN --amount 1500000000000000000

let wei = sdk.parse_amount("1.5", 18)?;   // "1500000000000000000"
let eth = sdk.format_amount(&wei, 18)?;    // "1.5"

match sdk.shield(token_address, amount) {
    Ok(result) => println!("Deposit TX: {}", result.tx_hash),
    Err(CliError::InsufficientBalance) => println!("Not enough tokens in wallet"),
    Err(CliError::InvalidAmount) => println!("Invalid amount format"),
    Err(CliError::NotAuthenticated) => println!("Please login first"),
    Err(CliError::NetworkError { message }) => println!("Network error: {}", message),
    Err(e) => println!("Deposit failed: {:?}", e),
}

privacy-boost shield --token $TOKEN --amount 1.0 --human
privacy-boost balance --token $TOKEN