find data dir properly

src-tauri/src/errors.rs

@@ -91,6 +91,17 @@ pub enum SetupError {
     AutoLaunchError(#[from] auto_launch::Error),
     #[error("Failed to start listener: {0}")]
     ServerSetupError(#[from] std::io::Error),
+    #[error("Failed to resolve data directory: {0}")]
+    DataDir(#[from] DataDirError),
+}
+
+
+#[derive(Debug, ThisError, AsRefStr)]
+pub enum DataDirError {
+    #[error("Could not determine data directory")]
+    NotFound,
+    #[error("Failed to create data directory: {0}")]
+    Io(#[from] std::io::Error),
 }