Module countdown 

Human-readable countdown between two instants.

Mirrors claudebar’s countdown() shell function (claudebar:252-268):

• missing / unparseable reset → "—"
• reset already in the past → "now"
• ≥1 day remaining → "{d}d {h}h"
• otherwise → "{h}h {mm}m" (zero-padded minutes)

Functions

format

Format reset - now as a short human string.