chore: update documentation

plugins/dialog/src/error.rs

@@ -4,21 +4,28 @@
 
 use serde::{ser::Serializer, Serialize};
 
+/// Alias for `Result<T, Error>` used throughout this crate.
 pub type Result<T> = std::result::Result<T, Error>;
 
+/// Errors that can occur while showing or interacting with a dialog.
 #[derive(Debug, thiserror::Error)]
 #[non_exhaustive]
 pub enum Error {
+    /// An error forwarded from the Tauri core.
     #[error(transparent)]
     Tauri(#[from] tauri::Error),
+    /// An I/O error, for example while resolving a picked path.
     #[error(transparent)]
     Io(#[from] std::io::Error),
+    /// Forwarding a request to, or receiving a response from, the mobile plugin failed.
     #[cfg(mobile)]
     #[error(transparent)]
     PluginInvoke(#[from] tauri::plugin::mobile::PluginInvokeError),
+    /// The folder picker was requested through the `open` command, but folder picking is not implemented on mobile.
     #[cfg(mobile)]
     #[error("Folder picker is not implemented on mobile")]
     FolderPickerNotImplemented,
+    /// An error forwarded from the `fs` plugin, returned when granting filesystem scope to a picked path fails.
     #[error(transparent)]
     Fs(#[from] tauri_plugin_fs::Error),
 }