"""Shared HTTP status-code bucketing — used by the aggregator (per-IP
rollup) and available for any endpoint needing the same 2xx/3xx/4xx/5xx
buckets, so there's one bucketing rule, not several copies."""
from __future__ import annotations


def status_bucket(status_code: int) -> str:
    if status_code < 300:
        return "2xx"
    if status_code < 400:
        return "3xx"
    if status_code < 500:
        return "4xx"
    return "5xx"