feat: artist/page endpoint, multi-disc fix, playlist ownership, UX improvements

- Switch artist view to artist/page API (proper sections: Albums, Singles & EPs,
  Live, Compilations; version in titles like "Deluxe")
- Fix artist sections categorization using releases[].type from artist/page
- Add getUser() backend call; fetch on session restore when userId=0 to fix
  playlist ownership (Remove from playlist / Delete playlist were missing)
- Fix multi-disc double-click / Play Now queue start index (disc headers were
  counted in row index but excluded from currentTracksJson)
- Hide redundant Album column when viewing an album
- Make artist name in context header clickable (navigates to artist page)
- Fix gap between title and artist name in context header (addStretch)
- Fix queue panel track titles to include version field
- Fix album list to show version in title column

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

rust/include/qobuz_backend.h

@@ -34,6 +34,7 @@ enum QobuzEvent {
     EV_PLAYLIST_CREATED      = 20,
     EV_PLAYLIST_DELETED      = 21,
     EV_PLAYLIST_TRACK_ADDED  = 22,
+    EV_USER_OK               = 23,
 };
 
 // Callback signature
@@ -46,6 +47,7 @@ void                qobuz_backend_free(QobuzBackendOpaque *backend);
 // Auth
 void qobuz_backend_login(QobuzBackendOpaque *backend, const char *email, const char *password);
 void qobuz_backend_set_token(QobuzBackendOpaque *backend, const char *token);
+void qobuz_backend_get_user(QobuzBackendOpaque *backend);
 
 // Catalog
 void qobuz_backend_search(QobuzBackendOpaque *backend, const char *query, uint32_t offset, uint32_t limit);

rust/src/api/client.rs

@@ -266,6 +266,15 @@ impl QobuzClient {
         Ok(serde_json::from_value(body)?)
     }
 
+    pub async fn get_artist_page(&self, artist_id: i64) -> Result<Value> {
+        let resp = self
+            .get_request("artist/page")
+            .query(&[("artist_id", artist_id.to_string())])
+            .send()
+            .await?;
+        Self::check_response(resp).await
+    }
+
     // --- Search ---
 
     pub async fn search(&self, query: &str, offset: u32, limit: u32) -> Result<SearchCatalogDto> {

rust/src/api/models.rs

@@ -46,6 +46,7 @@ pub struct SubscriptionDto {
 pub struct TrackDto {
     pub id: i64,
     pub title: Option<String>,
+    pub version: Option<String>,
     pub duration: Option<i64>,
     pub track_number: Option<i32>,
     pub playlist_track_id: Option<i64>,
@@ -120,6 +121,10 @@ pub struct ArtistDto {
     pub image: Option<ImageDto>,
     pub biography: Option<BiographyDto>,
     pub albums: Option<SearchResultItems<AlbumDto>>,
+    #[serde(rename = "epSingles")]
+    pub ep_singles: Option<SearchResultItems<AlbumDto>>,
+    #[serde(rename = "liveAlbums")]
+    pub live_albums: Option<SearchResultItems<AlbumDto>>,
 }
 
 #[derive(Debug, Deserialize, Clone, Serialize)]

rust/src/lib.rs

@@ -239,7 +239,7 @@ pub unsafe extern "C" fn qobuz_backend_get_artist(ptr: *mut Backend, artist_id:
     let cb = inner.cb; let ud = inner.ud;
 
     spawn(inner, async move {
-        let result = client.lock().await.get_artist(artist_id).await;
+        let result = client.lock().await.get_artist_page(artist_id).await;
         let (ev, json) = match result {
             Ok(r)  => (EV_ARTIST_OK,  serde_json::to_string(&r).unwrap_or_default()),
             Err(e) => (EV_ARTIST_ERR, err_json(&e.to_string())),
@@ -563,6 +563,25 @@ pub unsafe extern "C" fn qobuz_backend_remove_fav_album(ptr: *mut Backend, album
     });
 }
 
+// ---------- User ----------
+
+pub const EV_USER_OK: c_int = 23;
+
+#[no_mangle]
+pub unsafe extern "C" fn qobuz_backend_get_user(ptr: *mut Backend) {
+    let inner = &(*ptr).0;
+    let client = inner.client.clone();
+    let cb = inner.cb; let ud = inner.ud;
+    spawn(inner, async move {
+        let result = client.lock().await.get_user().await;
+        let (ev, json) = match result {
+            Ok(r)  => (EV_USER_OK, serde_json::to_string(&r).unwrap_or_default()),
+            Err(e) => (EV_GENERIC_ERR, err_json(&e.to_string())),
+        };
+        call_cb(cb, ud, ev, &json);
+    });
+}
+
 // ---------- Playlist management ----------
 
 pub const EV_PLAYLIST_CREATED: c_int = 20;