Module serialization 

Binary serialization primitives.

Two contexts use slightly different wire formats:

Context	String-length prefix	Used by
Order-ID hashing	u32 (4 bytes LE)	LimitOrder::order_id()
Transaction signing	u64 (8 bytes LE)	Transaction::serialize()

Both are little-endian throughout.

Functions

write_bool

Write a boolean as a single byte (0 or 1).

write_f64

Write an f64 in little-endian.

write_pubkey_bytes

Write a Pubkey’s raw 32 bytes into the buffer.

write_string_u32

Write a length-prefixed UTF-8 string with a u32 length prefix. Used for order-ID hash generation.

write_string_u64

Write a length-prefixed UTF-8 string with a u64 length prefix. Used for transaction serialization (signing).

write_u8

Write a u8 (1 byte).

write_u32

Write a u32 in little-endian.

write_u64

Write a u64 in little-endian.