pub fn idle_timeout_setting() -> IdleTimeoutSettingExpand description
The thin environment wrapper over parse_idle_timeout_secs.
The variable name is spelled out as a STRING LITERAL here rather than
passed as IDLE_TIMEOUT_ENV, and that is deliberate.
doc_check::source_read_env_vars recognises a variable only when it is read
through a literal inside std::env::var("..."); reading it through the
const compiles and works identically but makes the variable INVISIBLE to
the operator-doc parity gate, which would then pass green while the
variable went undocumented. Verified by removing this variable’s row from
OPERATIONS.md and confirming doc_check reddens.