host: AlertsConfig and ThemeConfig live in ungated modules, so the host compiles and tests without the tauri feature

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/waybetter-host/src/theme.rs

@@ -16,6 +16,18 @@ use serde::{Deserialize, Serialize};
 use serde_json::{Map, Value};
 use std::collections::BTreeMap;
 
+/// What an app declares about its themes for the host's theme commands
+/// ([`crate::theme_commands`]): the built-in ones and where the owner's choice is saved (app data
+/// file names).
+#[derive(Clone, Copy, Debug)]
+pub struct ThemeConfig {
+    pub site: &'static ThemeSite,
+    /// The owner's theme choice (absent = the site's own look).
+    pub file: &'static str,
+    /// Account and pane themes and the chrome setting (absent = defaults).
+    pub scopes_file: &'static str,
+}
+
 /// A site's built-in themes. The first preset is the site's own look (the default choice).
 #[derive(Clone, Copy, Debug)]
 pub struct ThemeSite {