make_id

def make_id() -> str:
    """Return a fresh, best-effort time-ordered 32-char hex string.

    The leading 8 bytes are the big-endian nanosecond wall clock; the
    trailing 8 bytes are random for uniqueness. Two ids minted in the same
    clock tick share the time prefix and so sort only by their random
    suffix — fine for ids that need only uniqueness (agent, channel,
    endpoint, request). Anything that must sort in *strict* creation order
    — envelope ids, which the delivery cursor and reconnect replay compare
    by sort order — must come from :class:`_MonotonicIds` instead.

    (``uuid.uuid7`` would give strict ordering but exists only on 3.14+,
    and ``uuid.uuid4`` is unordered, so neither is a portable basis.)
    """
    return time.time_ns().to_bytes(8, "big").hex() + os.urandom(8).hex()