fix(linux): prevent AppImage crashes by disabling DMABUF

This addresses a critical crash (EGL_BAD_PARAMETER) observed on Fedora
and other modern Linux distributions when running the AppImage.

The crash is caused by a version mismatch between the AppImage's bundled
libraries and the host system's newer graphics drivers when attempting
hardware acceleration (DMABUF).

Changes:
- Detects if running as an AppImage via the APPIMAGE env var.
- Sets WEBKIT_DISABLE_DMABUF_RENDERER=1 only for AppImage execution,
  forcing compatibility mode while preserving full GPU acceleration for
  native (.deb/.rpm) builds.
- Reordered logger initialization to ensuring startup logs are captured.
- Removed duplicate 	auri_plugin_shell initialization.

Author: ereinaimer

src-tauri/src/main.rs

@@ -59,6 +59,13 @@ fn main() {
         .with_line_number(true)
         .init();
 
+    // Only disable hardware acceleration if running specifically as an AppImage
+    #[cfg(target_os = "linux")]
+    if std::env::var("APPIMAGE").is_ok() {
+        std::env::set_var("WEBKIT_DISABLE_DMABUF_RENDERER", "1");
+        tracing::debug!("AppImage detected: Disabling DMABUF for stability.");
+    }
+
     tracing::info!(
         "Starting AltSendme Desktop application v{}",
         version::get_app_version()
@@ -78,7 +85,6 @@ fn main() {
         .plugin(tauri_plugin_os::init())
         .plugin(tauri_plugin_http::init())
         .plugin(tauri_plugin_shell::init())
-        .plugin(tauri_plugin_shell::init())
         .manage(Arc::new(tokio::sync::Mutex::new({
             // Check for launch args (potential file path from context menu)
             let args: Vec<String> = std::env::args().skip(1).collect();