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/lib.rs

@@ -356,6 +356,9 @@ fn specta_builder() -> Builder<tauri::Wry> {
         // Throw on error so generated `commands.*` return Promise<T> and throw,
         // matching the existing frontend's invoke() try/catch convention.
         .error_handling(tauri_specta::ErrorHandlingMode::Throw)
+        .events(tauri_specta::collect_events![
+            crate::player::events::PlayerStatusEvent
+        ])
         .commands(tauri_specta::collect_commands![
             // Player commands
             player_play_item,
@@ -601,11 +604,17 @@ pub fn run() {
     // `.export()` here would try to write `../src/lib/api/bindings.ts` at app
     // startup, which panics on devices (e.g. Android) where that path doesn't exist.
     let builder = specta_builder();
+    let invoke_handler = builder.invoke_handler();
 
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
         .plugin(tauri_plugin_os::init())
-        .setup(|app| {
+        .invoke_handler(invoke_handler)
+        .setup(move |app| {
+            // Mount tauri-specta events so PlayerStatusEvent can be emitted to and
+            // listened for on the frontend via the generated bindings.
+            builder.mount_events(app);
+
             // Initialize database with proper app data directory
             // Check for test mode environment variable first
             let db_path = if let Ok(test_data_dir) = std::env::var("JELLYTAU_DATA_DIR") {
@@ -845,7 +854,6 @@ pub fn run() {
             info!("[INIT] Application setup completed successfully");
             Ok(())
         })
-        .invoke_handler(builder.invoke_handler())
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }