Fix tray icon: load icon explicitly, remove config-based tray to avoid conflict

desktop/src-tauri/src/lib.rs

@@ -90,7 +90,11 @@ fn build_tray_tauri(app: &AppHandle) -> tauri::Result<()> {
     let quit = MenuItem::with_id(app, "quit", "Quit CodeBurn", true, None::<&str>)?;
     let menu = Menu::with_items(app, &[&refresh, &report, &quit])?;
 
+    let icon = tauri::image::Image::from_bytes(include_bytes!("../icons/icon.png"))
+        .expect("failed to load tray icon");
+
     TrayIconBuilder::with_id("codeburn-tray")
+        .icon(icon)
         .tooltip("CodeBurn")
         .menu(&menu)
         .show_menu_on_left_click(false)

desktop/src-tauri/tauri.conf.json

@@ -27,11 +27,6 @@
     ],
     "security": {
       "csp": "default-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline'; font-src 'self' data:; connect-src 'self' ipc: https://api.frankfurter.app"
-    },
-    "trayIcon": {
-      "id": "codeburn-tray",
-      "iconPath": "icons/tray.png",
-      "iconAsTemplate": true
     }
   },
   "bundle": {