Theme
Domain: Configuration
Motivation
dsh-client-ui-theme lets Web GUI users choose light, dark, or system and set conversation content text from 12 to 17 px in Settings. A loopback client stores both values in the ui-theme settings namespace, which the local provider persists in $DSH_HOME/cordis.patch.yml by default. The plugin resolves system through prefers-color-scheme and publishes immutable ThemeSnapshots, injecting a synchronous bootstrap so the palette applies before the shell loads.
Concrete Example
Choose dark in Settings; the value persists to $DSH_HOME/cordis.patch.yml under ui-theme and applies on next load.
Analogy
It is the appearance settings that persist to your home patch.