docs: note eyebrow-label + divider-rule header on ReleaseDescription

DeepDrftPublic.Client/CLAUDE.md

@@ -24,7 +24,7 @@ All interactive UI for the site. Blazor WebAssembly. Pages, controls, the stream
   - `AudioPlayerBar/LevelMeterFab.razor`: Floating-action button replacing the static FAB in the minimized dock. Renders a continuous vertical fill inside the music-note silhouette that tracks live audio level (0–100%), with fixed three-zone gradient (green 0–60%, yellow 60–85%, orange 85–100%). Note silhouette always visible at 25% opacity; idle when paused/stopped. Reuses spectrum-callback infrastructure.
   - `SpectrumVisualizer.razor`: Bar-graph spectrum display, driven by `getSpectrumData` JS callback.
   - `ReleaseHeroOverlay.razor`: Shared presentational overlay shell consumed by both `SessionDetail` and `MixDetail`. Renders a background-image hero region with genre/date/share overlaid at the top and title/artist/play at the bottom. Parameters: `HeroImageKey`, `PlaceholderIcon`, `CoverThumbKey` (optional cover thumb in bottom row), `Title`, `Artist`, `Genre`, `ReleaseDate`, `ShareContent` (slot), `PlayContent` (slot), `Class` (per-page aspect/sizing override). Owns no player logic or data fetch; each consuming page passes its own play and share slots. Overlay shell is plain `<div>`s; background-image surface is a `<div class="release-hero-img">` (no `MudPaper`).
-  - `ReleaseDescription.razor`: Shared presentational blurb block for release detail pages. Renders the release's short `Description` paragraph in a uniform styled block (`.deepdrft-release-description` / `.deepdrft-release-description-text`) placed just below the hero/header. Purely presentational — owns no data fetch or player wiring. A null/whitespace `Description` renders nothing at all (no block, no divider, no whitespace artifact; the guard lives here so every consumer gets it for free). Parameter: `Description` (`string?`).
+  - `ReleaseDescription.razor`: Shared presentational blurb block for release detail pages. Renders a header row (mono uppercase eyebrow label "Notes" in `.deepdrft-release-description-label` + thin horizontal divider in `.deepdrft-release-description-rule`, inside `.deepdrft-release-description-header`) above the release's short `Description` paragraph (`.deepdrft-release-description-text`, display-serif weight 300), all wrapped in `.deepdrft-release-description`, placed just below the hero/header. The header row mirrors the home page's `.section-label`/`.divider-line` motif. Purely presentational — owns no data fetch or player wiring. A null/whitespace `Description` renders nothing at all (no block, no divider, no whitespace artifact; the guard lives here so every consumer gets it for free). Parameter: `Description` (`string?`).
   - `WaveformVisualizer.razor`: The single WebGL2 lava-lamp visualizer engine. Hosts the waveform of whatever track is currently playing/selected. Three hosting modes: mode A (Mix detail — full-bleed centerpiece), mode B (Cut/Session detail — ambient layer behind hero+content via `ReleaseDetailScaffold`'s `Ambient` slot), mode C (NowPlaying hero panel — full-bleed background for the home hero's right side, mounted by `NowPlaying.razor` inside `.np-visualizer-bg`). `[Parameter] bool Fill` switches from fixed-viewport positioning to container-relative sizing (CSS-only; the renderer is identical in both modes). The bridge resolves the current track's `EntryKey` and re-fetches the high-res datum on track change. Subscribes to `WaveformVisualizerControlState.Changed` and pushes each updated dial to the WebGL module via JS interop. Follows the live playing track (keys on host `TrackId` match OR shared host `ReleaseEntryKey`).
   - `WaveformVisualizerControls.razor`: The waveform visualizer control panel (content hosted by `WaveformVisualizerControlPopover`). Phase 15 re-layout: a deterministic **three-row sectioned layout** encoding the visualizer's two subsystems. Row 1 (MODE, always visible): two iconographic lamp toggles (lava on/off, waveform on/off) left-aligned + collisions knob (conditional — only when both subsystems on) + color knob pinned far-right. Row 2 (LAVA, visible only when `LavaEnabled`): "LAVA:" section label + Gravity / Heat / FluidAmount / FluidViscosity knobs. Row 3 (WAVE, visible only when `WaveformEnabled`): "WAVE:" section label + scroll-speed `MudSlider` (not a knob) + width knob pinned far-right. Total: two lamp toggles, seven `RadialKnob`s, one `MudSlider`. Colour principle: lamp toggles / knob arcs / slider are green (`Color.Primary` — interactive); section labels / knob caption icons are light (static). Each control has a playful `MudTooltip`. `[Parameter] bool PanelChrome` scopes panel chrome (NowPlayingCard look — square corners, lighter-navy, thin border) to the popover mount; chrome classes live in the global `deepdrft-styles.css` (CSS isolation cannot reach portaled overlay content). `[Parameter] bool Visible` gates the rows via `@if` while the container holds reserved min-height. Owns no JS interop: mutates the injected `WaveformVisualizerControlState` and raises `Changed`. No control is a seek surface (read-only contract).
   - `WaveformVisualizerControlPopover.razor`: Pairs the lava-lamp icon button with `WaveformVisualizerControls` as a **screen-centered tinted modal** (Phase 15). The primitive is `MudOverlay` (`DarkBackground="true"`, `Modal="true"`) — **not** `MudPopover`; `AnchorOrigin`/`TransformOrigin` parameters do not exist (a centered modal has no anchor). Clicking the lava-lamp icon opens the overlay; clicking the scrim closes it (knob-drag-safe: `RadialKnob`'s `position:fixed` capture div sits above the scrim during a drag, so releasing outside the panel never fires the close handler). The panel stops click propagation so an inside click is not a dismissal. `[Parameter] Size IconSize` controls the trigger-icon size (default `Large`). This is the unit every host places — one icon anywhere gives the full control panel centered on screen, regardless of where the icon sits. Placed identically on Mix, Cut, Session, and the NowPlaying hero panel (full parity; in NowPlaying it sits in `.np-visualizer-controls` at the panel's top-right corner, not inside `NowPlayingCard`).