feat(web): Storybook for offline UI design + light theme + brand spinner

Stand up Storybook so the management console can be designed without a running
host, plus the design-system work that surfaced along the way.

Storybook (@storybook/react-vite):
- Slim Start/Nitro-free vite config; the preview imports the app's real
  src/styles.css directly so the design tokens stay single-sourced (no mirror).
- Stories for the @unom/ui primitives (Button/Card/Inputs/Badge), brand marks,
  the AppShell (throwaway in-memory TanStack router), and every data-driven page
  (Dashboard/Host/Clients/Library/Settings) rendered offline via a window.fetch
  stub + typed fixtures. The route page components are exported so stories can
  render them.

Light theme:
- styles.css now carries a light :root (lavender, from the docs palette) with the
  existing violet chrome moved to .dark; the live console still pins html.dark by
  default, so this only adds the option (Storybook's toolbar toggles it).
- Fixes a stray `*/` inside a comment that prematurely closed it and silently
  broke Tailwind's @theme processing.

Spinner:
- The punktfunk lens recreated with motion/react: two circles surge through one
  another in depth (JS perspective scale + z-index — robust where mix-blend-mode
  flattens CSS preserve-3d) with a screen-blend lens highlight. Replaces the
  skeleton loading state in QueryState; removes ui/skeleton.tsx.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/stories/QueryState.stories.tsx

@@ -0,0 +1,36 @@
+import type { Meta, StoryObj } from '@storybook/react-vite'
+import { QueryState } from '@/components/query-state'
+import { ApiError } from '@/api/fetcher'
+
+// QueryState is the uniform loading/error wrapper every data-backed route uses —
+// the most useful thing to design WITHOUT a running host, since its three states
+// (loading spinner / error / unauthorized) never appear together live.
+const Loaded = () => (
+  <div className="rounded-lg border p-4 text-sm">Loaded content renders here.</div>
+)
+
+const meta = {
+  title: 'Patterns/QueryState',
+  component: QueryState,
+  args: { children: <Loaded /> },
+} satisfies Meta<typeof QueryState>
+
+export default meta
+type Story = StoryObj<typeof meta>
+
+export const Loading: Story = {
+  args: { isLoading: true, error: null },
+}
+
+export const ErrorWithRetry: Story = {
+  args: { isLoading: false, error: new Error('connection refused'), refetch: () => {} },
+}
+
+export const Unauthorized: Story = {
+  args: { isLoading: false, error: new ApiError(401, null) },
+}
+
+export const Loaded_: Story = {
+  name: 'Success',
+  args: { isLoading: false, error: null },
+}