fix(home): render all 13 configurator sections; own recent-albums history

Two Home bugs, one dropped port. #566: four configurator sections
(favoriteAlbums 'Library Albums', qobuzMixes, releaseWatch, topArtists)
were offered and persisted but had no HomeView render arm and no data
in load_home — enabling them produced an invisible row. All four were
genuine Tauri-Home features (DiscoveryView.svelte arms :632/:653/:660/
:666, loaded unconditionally), so this is the full port, not a trim:
own HomeState fields (separate lifecycle from ForYouState), shared
foryou fetch pipelines (favorite_album_cards / fetch_release_watch /
top_artist_cards extracted pub(crate), For You behavior untouched),
Home-scoped artwork targets, and HomeView arms mirroring ForYouView.
load_home joins the three fetches concurrently with the index — zero
added latency. A HOME_RENDERABLE guard next to descriptors_for is now
the single source of truth: an enabled id without a render arm can
never emit an invisible descriptor again.

#567: 'Recently Played Albums' starved because albums derived from the
24-track history (long albums collapse to ~4 distinct). recently.rs
now keeps a separate album history (dedupe by id at record time, own
24 cap) with additive migration from the legacy bare-array format;
tracks keep their cap; load()/load_albums() signatures unchanged.

Zero new msgids (all three titles reuse For You's). qbz-app tests
10/10; slintcheck green.

cc

crates/qbz-app/src/settings/discover_prefs.rs

@@ -169,7 +169,10 @@ pub struct DiscoverPrefs {
 pub fn default_prefs() -> DiscoverPrefs {
     use DiscoverySectionId::*;
     DiscoverPrefs {
-        // home: first 7 ON, last 6 OFF.
+        // home: first 7 ON, last 6 OFF (1:1 with Tauri sectionPrefs.ts:63-77).
+        // All 13 ids render on Home since #566 completed the port: qobuzMixes
+        // / releaseWatch / topArtists / favoriteAlbums were genuine Tauri-Home
+        // sections whose Slint render arms + data pipelines were missing.
         home: vec![
             pref(NewReleases, true),
             pref(PressAwards, true),
@@ -503,7 +506,7 @@ mod tests {
     #[test]
     fn defaults_match_spec_exactly() {
         let d = default_prefs();
-        // home: 13 entries, first 7 ON.
+        // home: 13 entries, first 7 ON (1:1 Tauri sectionPrefs.ts).
         assert_eq!(
             ids(&d.home),
             vec![