Function get_current_date 

pub fn get_current_date() -> String

Returns today’s local date as a YYYY-MM-DD string.

The formatted string is cached behind an RwLock and only recomputed when the local calendar day changes, so repeated calls within the same day (e.g. tagging every aggregated row) avoid re-running strftime. A poisoned lock degrades gracefully: the value is recomputed without touching the cache rather than panicking.