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/lib/stores/sessions.ts

@@ -2,8 +2,7 @@
 // TRACES: UR-010 | DR-037
 
 import { writable, derived } from "svelte/store";
-import { listen } from "@tauri-apps/api/event";
-import { commands } from "$lib/api/bindings";
+import { commands, events } from "$lib/api/bindings";
 import type { Session } from "$lib/api/types";
 
 interface SessionsState {
@@ -14,11 +13,6 @@ interface SessionsState {
   lastUpdated: Date | null;
 }
 
-interface PlayerStatusEvent {
-  type: string;
-  sessions?: Session[];
-}
-
 function createSessionsStore() {
   const initialState: SessionsState = {
     sessions: [],
@@ -30,16 +24,17 @@ function createSessionsStore() {
 
   const { subscribe, update } = writable<SessionsState>(initialState);
 
-  // Listen for session updates from Rust backend
-  listen<PlayerStatusEvent>("player-event", (event) => {
-    if (event.payload.type === "sessions_updated" && event.payload.sessions) {
-      console.log(`[Sessions] Received ${event.payload.sessions.length} sessions from backend`);
-      event.payload.sessions.forEach((s, i) => {
+  // Listen for session updates from Rust backend (generated tauri-specta event)
+  events.playerStatusEvent.listen((event) => {
+    if (event.payload.type === "sessions_updated") {
+      const sessions = event.payload.sessions as unknown as Session[];
+      console.log(`[Sessions] Received ${sessions.length} sessions from backend`);
+      sessions.forEach((s, i) => {
         console.log(`[Sessions] Session ${i}: id=${s.id}, device=${s.deviceName}, supportsRemoteControl=${s.supportsRemoteControl}`);
       });
       update((s) => ({
         ...s,
-        sessions: event.payload.sessions!,
+        sessions,
         lastUpdated: new Date(),
         error: null,
       }));