Canonical truthy/falsy flag parsing for Dynamo.
Single owner of the boolean vocabulary accepted from user-supplied
configuration (environment variables, HTTP headers, config values):
truthy = 1 | true | on | yes, falsy = 0 | false | off | no or empty,
case-insensitive, surrounding whitespace ignored.
dynamo_runtime::config re-exports these helpers and is the canonical
import path for crates that already depend on dynamo-runtime. Crates that
cannot (e.g. dynamo-memory, dynamo-kv-router, dynamo-mocker) depend on
this crate directly. Do not hand-roll new bool parsers — a divergent
accepted set means SOMEFLAG=on works for one flag and silently not
another. tests/no_bool_parse_forks.rs greps the workspace for forks.