feat(ui)!: fluid editorial as the 2.0 interface, default skin and design language

CLAUDE.md

@@ -12,6 +12,7 @@ This file is an **index, not a manual**. It carries the map plus the one-line fo
 | --------------------------------------- | -------------------------------------------------------------------- |
 | Why a rule exists / how not to break it | [`docs/architecture/invariants.md`](docs/architecture/invariants.md) |
 | How a feature actually works            | [`docs/features/`](docs/README.md#features)                          |
+| The visual direction (tokens, shapes)   | [`docs/design/fluid-editorial.md`](docs/design/fluid-editorial.md)   |
 | Crate split, audio topology, DB layout  | [`docs/architecture/`](docs/README.md#architecture)                  |
 | Design decisions not yet built          | [`docs/rfcs/`](docs/README.md#rfcs)                                  |
 | Release / packaging procedure           | [`docs/RELEASING.md`](docs/RELEASING.md)                             |
@@ -101,7 +102,7 @@ Names in `commands/`, `audio/` and `src/components/` are predictable — read th
 | Playlists    | [`playlists.md`](docs/features/playlists.md) · [`smart-playlists.md`](docs/features/smart-playlists.md) | CRUD, sorting, auto-covers, M3U, Daily Mix + On Repeat generators, rule tree                                                                                                                                                                                                                             |
 | Integrations | [`integrations.md`](docs/features/integrations.md)                                                      | Deezer, Last.fm, TheAudioDB, lyrics providers + editor, artist overrides, Discord RPC, OS notifications, scrobbling                                                                                                                                                                                      |
 | Plugins      | [`plugins.md`](docs/features/plugins.md)                                                                | WASM host + sandbox, store, options, `source` / `metadata` / `ui` / `canvas` worlds, Web Radio + offline catalogue                                                                                                                                                                                       |
-| UI & UX      | [`ui.md`](docs/features/ui.md)                                                                          | layout, 5 skins × 14 themes + custom / cover accent, suggestion of the day on Home, immersive view, Canvas, cover slideshow, artist hero, mini-player, desktop lyrics, Wrapped, profiles, onboarding, settings, updater, backups                                                                         |
+| UI & UX      | [`ui.md`](docs/features/ui.md)                                                                          | layout, 6 skins × 14 themes + custom / cover accent, suggestion of the day on Home, immersive view, Canvas, cover slideshow, artist hero, mini-player, desktop lyrics, Wrapped, profiles, onboarding, settings, updater, backups                                                                         |
 | LAN servers  | [`dlna.md`](docs/features/dlna.md) · [`mpd.md`](docs/features/mpd.md)                                   | opt-in MediaServer and MPD control surface                                                                                                                                                                                                                                                               |
 
 ## Conventions

README.md

@@ -104,7 +104,7 @@ WaveFlow is a desktop music player for the audio files you already own. It scans
 
 ### 🎨 Interface · [docs](docs/features/ui.md)
 
-- 5 skins × 14 themes, dark mode, a high-contrast mode
+- 6 skins × 14 themes — **Fluid**, the cinematic editorial direction of 2.0, by default — dark mode, a high-contrast mode
 - Immersive now-playing with Canvas clips, animated covers and a cover slideshow
 - Always-on-top mini-player, system tray, Windows taskbar buttons
 - Statistics and **WaveFlow Wrapped**, all computed locally

docs/README.md

@@ -26,6 +26,12 @@ User-facing references and per-feature deep dives. The top-level [README](../REA
 | [Audio architecture](architecture/audio.md)            | 3-thread lock-free pipeline, ring buffer sizing, callback constraints                                                                                                                                                                                             |
 | [Database & paths](architecture/storage.md)            | `app.db` vs per-profile `data.db`, on-disk layout, migration policy                                                                                                                                                                                               |
 
+## Design
+
+| Doc                                          | Scope                                                                                                                                                                                               |
+| -------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| [Fluid Editorial](design/fluid-editorial.md) | The visual direction since 2.0: principles, colour / type / shape / motion tokens, the wave mark, every component's shape, and how to carry it to the web app, the Android app and the landing site |
+
 ## RFCs
 
 Long-form design documents that lock in cross-cutting architectural decisions before implementation. New RFCs live under [`rfcs/`](rfcs/) and are numbered sequentially.