feat: toggle window always on top

src-tauri/src/config.rs

@@ -55,6 +55,9 @@ pub struct HikariConfig {
 
     #[serde(default = "default_notification_volume")]
     pub notification_volume: f32,
+
+    #[serde(default)]
+    pub always_on_top: bool,
 }
 
 impl Default for HikariConfig {
@@ -70,6 +73,7 @@ impl Default for HikariConfig {
             greeting_custom_prompt: None,
             notifications_enabled: true,
             notification_volume: 0.7,
+            always_on_top: false,
         }
     }
 }
@@ -109,6 +113,7 @@ mod tests {
         assert_eq!(config.theme, Theme::Dark);
         assert!(config.greeting_enabled);
         assert!(config.greeting_custom_prompt.is_none());
+        assert!(!config.always_on_top);
     }
 
     #[test]
@@ -124,6 +129,7 @@ mod tests {
             greeting_custom_prompt: Some("Hello!".to_string()),
             notifications_enabled: true,
             notification_volume: 0.7,
+            always_on_top: true,
         };
 
         let json = serde_json::to_string(&config).unwrap();