docs: add Scene Discovery and Discovery Tabs to 1.1.19 release notes

docs/release-1.1.19/CHANGELOG_HIGHLIGHTS.md

@@ -2,6 +2,8 @@
 
 ## Highlights
 
+- **Scene Discovery** — explore artists from the same city or musical scene; MusicBrainz-powered with genre filtering, A-Z grouping, and sidepanel discography view
+- **Discovery Tabs** — redesigned Home with 3 tabs: customizable Home, Editor's Picks, and personalized For You with Radio Stations, Spotlight, and Rediscover Your Library
 - **Audio engine upgraded** — vendored rodio/cpal removed; now on upstream rodio 0.22 with ALSA sample rate fallback, gapless on all backends, and smart quality downgrade
 - **Booklet viewer** — albums with digital booklets get an in-app PDF viewer powered by native MuPDF; includes download button
 - **3 Neon visualizers** — Laser, Tunnel, and Comet; all music-reactive with bass/mid/high response. Comet extracts colors from album artwork
@@ -9,6 +11,19 @@
 - **Label Releases redesigned** — logo header, sorting, filters, group-by-artist toggle, and search
 - **Explicit badges** — shown across the entire app
 
+## Scene Discovery
+
+- Explore artists from the same city or musical scene — powered by MusicBrainz location and genre affinity
+- Grid and sidepanel views with A-Z grouping, genre filter, and text search
+- Sticky header with scene label and country flag on scroll
+
+## Discovery Tabs (Redesigned Home)
+
+- **3-tab home**: Home (customizable sections), Editor's Picks (editorial curation), For You (personalized)
+- For You features Radio Stations, Artists to Follow, Spotlight artist, Rediscover Your Library, and Genre Essentials
+- Sticky compact header with tab navigation and genre filter appears on scroll
+- Progressive loading with session cache for instant back-navigation
+
 ## Audio
 
 - ALSA sample rate fallback when DAC doesn't support requested rate