Add some Trait doc comments

Added comments to Audio(System|Player)Interface traits.

gui/src/imp/desktop.rs

@@ -6,10 +6,6 @@ use mumble_web2_common::{ClientConfig, ServerStatus};
 use std::collections::HashMap;
 use std::time::Duration;
 
-// ============================================================================
-// Platform Struct
-// ============================================================================
-
 /// Desktop platform implementation using Tokio and native audio.
 pub struct DesktopPlatform;
 

gui/src/imp/mobile.rs

@@ -45,7 +45,7 @@ impl super::PlatformInterface for MobilePlatform {
     }
 
     async fn get_status(client: &reqwest::Client) -> color_eyre::Result<ServerStatus> {
-        get_status(client).await
+        super::connect::get_status(client).await
     }
 
     fn init_logging() {

gui/src/imp/mod.rs

@@ -15,10 +15,15 @@ use std::time::Duration;
 // Trait Definitions
 // ============================================================================
 
+/// Platform-specific audio subsystem for capturing microphone input and creating playback streams.
+///
+/// The audio system handles Opus encoding internally - callers receive encoded frames
+/// ready for network transmission.
 pub trait AudioSystemInterface: Sized {
+    /// The player type returned by [`create_player`](Self::create_player).
     type AudioPlayer: AudioPlayerInterface;
 
-    /// Initialize the audio system, including relevant state
+    /// Initialize the audio system.
     async fn new() -> Result<Self, Error>;
 
     /// Set the processor for the microphone input, mainly noise cancellation settings.
@@ -35,8 +40,13 @@ pub trait AudioSystemInterface: Sized {
     fn create_player(&mut self) -> Result<Self::AudioPlayer, Error>;
 }
 
+/// A handle to an active audio playback stream for a single remote user.
+///
+/// Each connected user gets their own `AudioPlayer` instance, which decodes
+/// incoming Opus frames and outputs PCM audio to the platform's audio device.
+/// The player manages its own decoder state and output buffer.
 pub trait AudioPlayerInterface {
-    /// Playback an opus frame.
+    /// Decode and play an Opus-encoded audio frame.
     fn play_opus(&mut self, payload: &[u8]);
 }