a second instance on one machine: its own data, its own peer port, and a join that says itself again when it was never seated

src-tauri/src/playback.rs

@@ -348,7 +348,7 @@ impl PlayerState {
 
 /// Stable cache filename for a remote file: short hash + original name.
 pub fn cache_path(app: &tauri::AppHandle, username: &str, remote_path: &str) -> Option<PathBuf> {
-    let dir = app.path().app_data_dir().ok()?.join("stream-cache");
+    let dir = crate::paths::app_data(app).ok()?.join("stream-cache");
     std::fs::create_dir_all(&dir).ok()?;
 
     let mut hash: u64 = 0xcbf29ce484222325;
@@ -398,7 +398,7 @@ pub fn prune_cache(app: &tauri::AppHandle) {
     // a transfer buffer — age expiry off, size cap still applies.
     let age_prune = !crate::config::stream_keep_forever(&cfg);
 
-    let Ok(dir) = app.path().app_data_dir().map(|d| d.join("stream-cache")) else {
+    let Ok(dir) = crate::paths::app_data(app).map(|d| d.join("stream-cache")) else {
         return;
     };
     let Ok(entries) = std::fs::read_dir(&dir) else {