Frontend Manifest
Frontend themes use protocol postsnail-theme-v1, type postsnail-frontend-theme, safe template paths, assets, slots, settings, and budgets. quiet-feed is the built-in default.
Admin Manifest
Admin themes use protocol postsnail-theme-v1, type postsnail-admin-theme, and --ps-* CSS variables. JavaScript runtime assets are rejected.
Theme Settings
Theme settings are stored privately in the encrypted Shell under appearance.themeSettings.