Storage Architecture

pub const CF_METADATA: &str = "metadata";        // Chain metadata
pub const CF_ACCOUNTS: &str = "accounts";        // Account states
pub const CF_TRANSACTIONS: &str = "transactions"; // Transaction data
pub const CF_VALIDATORS: &str = "validators";    // Validator info
pub const CF_BLOCKS: &str = "blocks";           // Block data
pub const CF_CONSENSUS: &str = "consensus";     // Consensus state

impl BinaryCodec {
    /// Encode block key for height-based ordering
    pub fn encode_block_key(height: u64) -> Vec<u8> {
        format!("block_{:020}", height).into_bytes()
    }

    /// Encode transaction key for lookups
    pub fn encode_transaction_key(tx_id: &str) -> StorageResult<Vec<u8>> {
        Ok(format!("tx_{}", tx_id).into_bytes())
    }

    /// Encode validator key for validator operations
    pub fn encode_validator_key(validator_id: &str) -> StorageResult<Vec<u8>> {
        Ok(format!("val_{}", validator_id).into_bytes())
    }
}