Add D-prefixed Blazor wrappers for every daisyUI 5 component

Components/Daisy/ wraps all 69 components in daisyUI's llms.txt, grouped by
daisyUI's categories (Actions, DataDisplay, Navigation, Feedback, DataInput,
Layout, Mockup), with part components where daisyUI has repeating parts (DTab,
DMenuItem, DTimelineItem, ...).
- Each enum maps to whole literal class names in a switch, so Tailwind's scanner
  generates them. Nothing is concatenated.
- Value-holding fields derive from DInputBase<TValue>, Blazor's InputBase, so
  @bind-Value and EditForm validation work. Invalid fields get the component's
  *-error class.
- Open and active state lives in C# (@bind-IsOpen, @bind-Active) and is rendered
  with daisyUI's *-open modifiers. DDropdown adds an outside-click layer and
  Escape. No component uses JS interop.
- The one exception is DCalendar, which wraps the Cally web component, vendored
  as wwwroot/vendor/cally.js (0.9.2, MIT).

/styleguide (not linked) renders every component in all its colours, sizes and
states, with a theme and hue picker that previews without saving.

neo.css follows what the styleguide showed:
- select keeps daisyUI's arrow;
- skeleton-text isn't sunk;
- the phone mockup and dock are raised;
- active menu items and OTP digits are inset;
- a joined accordion is raised as one block.
The primary, secondary and accent colours are deeper, so they still read as
text.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

Pages/Styleguide.razor

@@ -0,0 +1,74 @@
+@page "/styleguide"
+@using decePubClient.Components.Styleguide
+@implements IDisposable
+
+@* Every daisyUI wrapper (Components/Daisy) in every theme, to check them and the neo overrides (Styles/neo.css) by eye.
+   Not linked from the app. The theme picker only previews: it applies a throwaway PageSettings, and choosing Saved or
+   leaving the page restores the saved ones. *@
+<Title>Styleguide</Title>
+
+<div class="flex flex-col gap-10 pb-10">
+
+	<header class="sticky top-0 z-40 flex flex-wrap items-center gap-4 rounded-box bg-base-100 p-4 neo-raised">
+		<h1 class="text-xl font-bold">Styleguide</h1>
+		<DSelect TValue="PreviewTheme" class="w-auto" @bind-Value="theme" @bind-Value:after="Apply">
+			@foreach (var previewTheme in Enum.GetValues<PreviewTheme>())
+			{
+				<option value="@previewTheme">@previewTheme</option>
+			}
+		</DSelect>
+		<DRange TValue="short" class="neo-hue-track w-64" Min="0" Max="359" Immediate="true" @bind-Value="hue" @bind-Value:after="Apply" />
+		<span class="text-sm opacity-70">hue @hue</span>
+	</header>
+
+	<h2 class="text-2xl font-bold">Actions</h2>
+	<ActionsSection />
+
+	<h2 class="text-2xl font-bold">Data display</h2>
+	<DataDisplaySection />
+
+	<h2 class="text-2xl font-bold">Navigation</h2>
+	<NavigationSection />
+
+	<h2 class="text-2xl font-bold">Feedback</h2>
+	<FeedbackSection />
+
+	<h2 class="text-2xl font-bold">Data input</h2>
+	<DataInputSection />
+
+	<h2 class="text-2xl font-bold">Layout</h2>
+	<LayoutSection />
+
+	<h2 class="text-2xl font-bold">Mockup</h2>
+	<MockupSection />
+
+</div>
+
+@code {
+	enum PreviewTheme
+	{
+		Saved,
+		Light,
+		Dark,
+		LightGrey,
+		DarkGrey,
+		System
+	}
+
+	[CascadingParameter] CascadingState CascadingState { get; set; }
+
+	PreviewTheme theme = PreviewTheme.Saved;
+	short hue = 25;
+
+	void Apply() => CascadingState.Status.ApplyTheme(theme is PreviewTheme.Saved ? CascadingState.PublicCacheData.PageSettings : new PageSettings
+	{
+		PreferSystemTheming = theme is PreviewTheme.System,
+		ThemeIsDarkMode = theme is PreviewTheme.Dark,
+		ThemeIsLightGray = theme is PreviewTheme.LightGrey,
+		ThemeIsDarkGray = theme is PreviewTheme.DarkGrey,
+		LightThemeIndexColour = hue,
+		DarkThemeIndexColour = hue
+	});
+
+	public void Dispose() => CascadingState.Status.ApplyTheme(CascadingState.PublicCacheData.PageSettings);
+}