Feat: crash bugfixes

src/init.rs

@@ -158,9 +158,14 @@ pub fn init(args: InitArgs) -> Init {
     let sample_rate_shared = Arc::new(AtomicU32::new(44100));
     let mut initial_samples = Vec::new();
     for path in &app.audio.config.sample_paths {
-        let index = doux::sampling::scan_samples_dir(path);
-        app.audio.config.sample_counts.push(index.len());
-        initial_samples.extend(index);
+        if path.is_dir() {
+            let index = doux::sampling::scan_samples_dir(path);
+            app.audio.config.sample_counts.push(index.len());
+            initial_samples.extend(index);
+        } else {
+            eprintln!("Sample path not found: {}", path.display());
+            app.audio.config.sample_counts.push(0);
+        }
     }
     let preload_entries: Vec<(String, std::path::PathBuf)> = initial_samples
         .iter()