feat: v1.30.0 — Discord RPC, offline bulk download, artist images, lazy loading, crossfade fix

- Discord Rich Presence (opt-in) — requested by @Bewenben (#49)
- Bulk offline download for playlists and artist discographies — requested by @Apollosport (#54)
- Offline Library filter tabs: All / Albums / Playlists / Discographies with artist grouping
- Artist images on Artists overview (opt-in, off by default) — reported by @Apollosport (#53)
- Image lazy loading via IntersectionObserver (300px margin) across all pages
- Fix: crossfade no longer triggers on manual track skip — reported by @netherguy4 (#35)
- Fix: playlist offline cache now stored as single entry (not per-album)
- Fix: image cache AbortController no longer blocks IDB writes
- Update toast: experimental auto-update hint + GH download link always visible (Win/Mac)
- Queue tech strip: genre removed
- Facebook theme: contrast, opaque badge/back button, queue tab labels
- "Save discography offline" label (was "Download discography")
- Fix: clearing empty playlists via updatePlaylist.view (Axios empty array workaround)
- starredOverrides propagated to AlbumDetail, Favorites, RandomMix

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

src-tauri/Cargo.lock

@@ -565,7 +565,7 @@ checksum = "d38f2da7a0a2c4ccf0065be06397cc26a81f4e528be095826eee9d4adbb8c60f"
 dependencies = [
  "byteorder",
  "fnv",
- "uuid",
+ "uuid 1.22.0",
 ]
 
 [[package]]
@@ -986,6 +986,19 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "discord-rich-presence"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75db747ecd252c01bfecaf709b07fcb4c634adf0edb5fed47bc9c3052e7076b"
+dependencies = [
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "serde_repr",
+ "uuid 0.8.2",
+]
+
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -3470,9 +3483,10 @@ dependencies = [
 
 [[package]]
 name = "psysonic"
-version = "1.28.0"
+version = "1.30.0"
 dependencies = [
  "biquad",
+ "discord-rich-presence",
  "md5",
  "reqwest 0.12.28",
  "rodio",
@@ -3996,7 +4010,7 @@ dependencies = [
  "serde",
  "serde_json",
  "url",
- "uuid",
+ "uuid 1.22.0",
 ]
 
 [[package]]
@@ -4906,7 +4920,7 @@ dependencies = [
  "thiserror 2.0.18",
  "time",
  "url",
- "uuid",
+ "uuid 1.22.0",
  "walkdir",
 ]
 
@@ -5191,7 +5205,7 @@ dependencies = [
  "toml 0.9.12+spec-1.1.0",
  "url",
  "urlpattern",
- "uuid",
+ "uuid 1.22.0",
  "walkdir",
 ]
 
@@ -5704,6 +5718,15 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "uuid"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc5cf98d8186244414c848017f0e2676b3fcb46807f6668a97dfe67359a3c4b7"
+dependencies = [
+ "getrandom 0.2.17",
+]
+
 [[package]]
 name = "uuid"
 version = "1.22.0"
@@ -6898,7 +6921,7 @@ dependencies = [
  "serde_repr",
  "tracing",
  "uds_windows",
- "uuid",
+ "uuid 1.22.0",
  "windows-sys 0.61.2",
  "winnow 0.7.15",
  "zbus_macros 5.14.0",