Macro hopper_accounts 

macro_rules! hopper_accounts {
    (
        $(#[$attr:meta])*
        pub struct $name:ident {
            $( $field:ident : ( $($kind:tt)+ ) ),+ $(,)?
        }
    ) => { ... };
}

Generate a typed instruction context struct with validated account parsing.

Produces:

• The account struct itself
• A Bumps struct for PDA bump storage
• A HopperAccounts impl with try_from_accounts
• A static ContextDescriptor for schema/explain

Account kinds

Each field specifies a kind wrapped in parentheses, with optional modifiers:

Kind	Description	Writable	Signer
(signer)	Verified signer (SignerAccount)	no	yes
(mut signer)	Mutable + signer	yes	yes
(account<T>)	Layout-bound HopperAccount	no	no
(mut account<T>)	Mutable layout-bound account	yes	no
(program)	Verified executable (ProgramRef)	no	no
(unchecked)	No-validation passthrough	no	no
(mut unchecked)	Mutable unchecked passthrough	yes	no

Example

hopper_accounts! {
    pub struct Deposit {
        authority: (mut signer),
        vault: (mut account<VaultState>),
        system_program: (program),
    }
}

Then use with hopper_entry:

hopper_entry::<DepositIx, _>(program_id, accounts, data, |ctx, args| {
    let vault = ctx.accounts.vault.write()?;
    // ...
    Ok(())
})