feat(slint): honest MyQBZ quality badges for offline-cached items

While offline, cached items resolve their badges from the offline-cache
index (stored tier, bit depth, sample rate via the shared quality
formatter - the same rule the LocalLibrary offline-source rows use)
instead of hitting the gate-refused Qobuz resolve and falling back to
empty defaults. Release-type classifies over the stored track count with
the READY count as fallback. Online resolution is byte-identical (single
is_offline gate); the per-item fetch warn drops to debug only offline.

cc

crates/qbz-slint/src/myqbz_detail.rs

@@ -856,6 +856,92 @@ fn resolve_from_tracks(
     }
 }
 
+/// B10 — OFFLINE: derive a cached Qobuz item's badge values from LOCAL sources
+/// instead of the Qobuz API (which the offline gate refuses, leaving the badge
+/// empty). The offline index (`index.db` `cached_tracks` rows, surfaced as
+/// `CachedTrackInfo`) carries `quality` / `bit_depth` / `sample_rate` per
+/// track; the tier/detail rule is the SAME one `resolve_from_tracks` and the
+/// LocalLibrary "Offline"-source rows use (24-bit+ = Hi-Res, detail via
+/// `crate::quality::detail` — the library.db `qobuz_download` rows derive their
+/// badge from these very columns at sync time), so the offline badge matches
+/// every other surface. Returns `None` for non-Qobuz items, Qobuz playlists
+/// (membership is API-side), and uncached/non-ready items — the caller then
+/// falls through to the normal resolver path.
+async fn resolve_offline_cached(item: &MixtapeCollectionItem) -> Option<ResolvedItem> {
+    use qbz_offline_cache::OfflineCacheStatus;
+
+    if item.source != AlbumSource::Qobuz {
+        return None;
+    }
+    let off = crate::offline::get().await?;
+    let guard = off.db.lock().await;
+    let db = guard.as_ref()?;
+
+    let (info, ready_count) = match item.item_type {
+        ItemType::Album => {
+            let ready: Vec<qbz_offline_cache::CachedTrackInfo> = db
+                .get_album_tracks(&item.source_item_id)
+                .ok()?
+                .into_iter()
+                .filter(|cached| matches!(cached.status, OfflineCacheStatus::Ready))
+                .collect();
+            let count = ready.len();
+            (ready.into_iter().next()?, count)
+        }
+        ItemType::Track => {
+            let id = item.source_item_id.parse::<u64>().ok()?;
+            let info = db.get_track(id).ok().flatten()?;
+            if !matches!(info.status, OfflineCacheStatus::Ready) {
+                return None;
+            }
+            (info, 1)
+        }
+        // Qobuz playlist membership lives in the API — not derivable locally.
+        ItemType::Playlist => return None,
+    };
+
+    // Quality tier/detail — the resolve_from_tracks rule over the index
+    // columns. The stored quality string ("UltraHiRes" etc.) stands in for the
+    // missing hires flag when bit_depth is NULL.
+    let quality_tier = match info.bit_depth {
+        Some(d) if d >= 24 => "hires",
+        Some(_) => "cd",
+        None if info.quality.to_ascii_lowercase().contains("hires") => "hires",
+        None => "",
+    };
+    let quality_detail = if quality_tier.is_empty() {
+        String::new()
+    } else {
+        crate::quality::detail(info.bit_depth, info.sample_rate)
+    };
+
+    // Type label: albums classify by the stored track_count (the album's REAL
+    // count, captured at add time); the cached READY count is the fallback for
+    // older rows saved without one (a floor — partial caches undercount).
+    let type_label = match item.item_type {
+        ItemType::Album => {
+            let count = item
+                .track_count
+                .filter(|n| *n > 0)
+                .map(|n| n as u32)
+                .unwrap_or(ready_count as u32);
+            crate::album_map::classify_release_type(Some(count)).to_uppercase()
+        }
+        other => type_label(other).to_string(),
+    };
+
+    Some(ResolvedItem {
+        source_kind: "qobuz".to_string(),
+        quality_tier: quality_tier.to_string(),
+        quality_detail,
+        type_label,
+        // No artwork backfill offline: the empty-stored-art backfill is a
+        // local-item concern (those still resolve through the normal path),
+        // and a Qobuz CDN url could not be fetched offline anyway.
+        artwork_url: String::new(),
+    })
+}
+
 /// resolveItems pass (spec §17): resolve every rendered row's tracks via the
 /// shared enqueue resolver (`myqbz_play::fetch_item_tracks` — the SAME
 /// qobuz/local/plex backends), derive the row's source kind + album-level
@@ -865,6 +951,11 @@ fn resolve_from_tracks(
 /// `apply` (alongside the artwork jobs); already-cached rows are skipped, so a
 /// re-derive is instant. Fire-and-forget: failures leave the stored-source
 /// defaults in place.
+///
+/// OFFLINE (B10): a cached Qobuz item's badges resolve from the LOCAL offline
+/// index via `resolve_offline_cached` — the API path would be gate-refused and
+/// the badge would stay empty. Online the branch is never taken, so that path
+/// is byte-identical.
 pub fn resolve_items(
     runtime: std::sync::Arc<qbz_app::shell::AppRuntime<crate::adapter::SlintAdapter>>,
     weak: slint::Weak<AppWindow>,
@@ -893,8 +984,22 @@ pub fn resolve_items(
         let weak = weak.clone();
         let image_cache = image_cache.clone();
         handle.spawn(async move {
-            let tracks = crate::myqbz_play::fetch_item_tracks(&runtime, &full_item).await;
-            let resolved = resolve_from_tracks(&full_item, &tracks);
+            // B10 — OFFLINE: cached Qobuz items resolve their badges locally
+            // (offline index); everything else (online, local/plex, uncached)
+            // takes the existing resolver path unchanged.
+            let offline_resolved = if crate::offline_mode::engine().is_offline() {
+                resolve_offline_cached(&full_item).await
+            } else {
+                None
+            };
+            let resolved = match offline_resolved {
+                Some(r) => r,
+                None => {
+                    let tracks =
+                        crate::myqbz_play::fetch_item_tracks(&runtime, &full_item).await;
+                    resolve_from_tracks(&full_item, &tracks)
+                }
+            };
             let source = source_str(full_item.source).to_string();
             let source_item_id = full_item.source_item_id.clone();
             let stored_artwork_empty = full_item

crates/qbz-slint/src/myqbz_play.rs

@@ -205,12 +205,25 @@ pub(crate) async fn fetch_item_tracks(
     match resolver.resolve(item).await {
         Ok(tracks) => tracks,
         Err(e) => {
-            log::warn!(
-                "[qbz-slint] myqbz_play: fetch_item_tracks {}/{} failed: {}",
-                item.source_item_id,
-                item.title,
-                e
-            );
+            // B10 — while OFFLINE the Qobuz arms are gate-refused by design
+            // (cached items derive their badges locally in myqbz_detail), so a
+            // per-item failure here is expected noise, not a fault — log it at
+            // debug. Online failures stay warn.
+            if crate::offline_mode::engine().is_offline() {
+                log::debug!(
+                    "[qbz-slint] myqbz_play: fetch_item_tracks {}/{} failed offline: {}",
+                    item.source_item_id,
+                    item.title,
+                    e
+                );
+            } else {
+                log::warn!(
+                    "[qbz-slint] myqbz_play: fetch_item_tracks {}/{} failed: {}",
+                    item.source_item_id,
+                    item.title,
+                    e
+                );
+            }
             Vec::new()
         }
     }