ThemeStore

Persistence seam for the theme choice. The default is in-memory; core:data binds a DataStore-backed implementation in Koin (same interface → no shell/settings changes), which is how the dark-mode choice survives process death.

ponytail: synchronous read/write. The stored value is a single boolean read once at construction and written on toggle — a DataStore actual can runBlocking a first-value read at startup without a perceptible cost. Move to a suspend/Flow seam only if theme grows into a multi-field profile.

Inheritors