feat(library): genre sliders, artist links, and navigation utils

- music landing: diverse per-genre album sliders (online counts /
  offline wide-probe fallback) and home-screen library shortcuts
- add ArtistLinks component and shared navigation/genreDiversity utils
- player/playback-mode refinements across Rust and frontend

src-tauri/src/player/events.rs

@@ -10,7 +10,8 @@ use crate::utils::lock::MutexSafe;
 use log::error;
 use serde::{Deserialize, Serialize};
 use std::sync::Arc;
-use tauri::{AppHandle, Emitter};
+use tauri::AppHandle;
+use tauri_specta::Event;
 
 use super::{MediaSessionType, SleepTimerMode};
 
@@ -20,8 +21,8 @@ use super::{MediaSessionType, SleepTimerMode};
 /// state machine transitions.
 ///
 /// TRACES: UR-005, UR-019, UR-023, UR-026 | DR-001, DR-028, DR-047
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(tag = "type", rename_all = "snake_case")]
+#[derive(Debug, Clone, Serialize, Deserialize, specta::Type, tauri_specta::Event)]
+#[serde(tag = "type", rename_all = "snake_case", rename_all_fields = "camelCase")]
 pub enum PlayerStatusEvent {
     /// Playback position updated (emitted periodically during playback)
     PositionUpdate {
@@ -113,9 +114,6 @@ pub enum PlayerStatusEvent {
     },
 }
 
-/// Tauri event name for player status events
-pub const PLAYER_EVENT_NAME: &str = "player-event";
-
 /// Trait for emitting player events to the frontend.
 ///
 /// This abstraction allows backends to emit events without depending
@@ -141,7 +139,9 @@ impl TauriEventEmitter {
 
 impl PlayerEventEmitter for TauriEventEmitter {
     fn emit(&self, event: PlayerStatusEvent) {
-        if let Err(e) = self.app_handle.emit(PLAYER_EVENT_NAME, &event) {
+        // Emitted via the tauri-specta Event trait so the payload shape and event
+        // name match the generated TypeScript bindings (events.playerStatusEvent).
+        if let Err(e) = Event::emit(&event, &self.app_handle) {
             error!("Failed to emit player event: {}", e);
         }
     }