feat(web): unify console + docs on @unom/ui; host OpenAPI via Scalar

Move the management console (web/) off shadcn/ui to the shared @unom/ui
design system the marketing site + docs are built on, on the punktfunk
violet brand over dark chrome:

- Add @unom/ui/@unom/style/motion/radix-ui/zod + Geist; web/.npmrc maps the
  @unom scope (packages are public-read, so CI needs no npm auth).
- styles.css: one dark-violet palette (#141019/#1c1530, brand #6c5bf3 ->
  #a79ff8) exposed under BOTH the shadcn token names the routes use and
  @unom/ui's contract, so routes + components both resolve; pulls in
  @unom/ui's material gloss + easings.
- components/ui/* now back onto @unom/ui (AnimatedButton/InputText/Label/
  AnimatedCard); brand-mark/wordmark/logo replace the generic Radio icon in
  the shell + login.
- MaterialProvider (specular gloss) at the root. No UI sounds, like the site.

docs-site: new /api route renders the host management REST API as an
interactive Scalar reference (reads public/openapi.json, a snapshot of
docs/api/openapi.json), branded violet and linked from the top nav, the
docs sidebar, the landing page, and host-cli.md.

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

web/package.json

@@ -2,7 +2,7 @@
   "name": "punktfunk-web",
   "private": true,
   "type": "module",
-  "description": "punktfunk management console — TanStack Start + React Query (orval) + shadcn/ui + Paraglide i18n",
+  "description": "punktfunk management console — TanStack Start + React Query (orval) + @unom/ui + Paraglide i18n",
   "scripts": {
     "prepare": "bun run codegen",
     "codegen": "orval --config orval.config.ts && paraglide-js compile --project ./project.inlang --outdir ./src/paraglide",
@@ -15,15 +15,21 @@
     "lint": "tsc --noEmit"
   },
   "dependencies": {
+    "@fontsource-variable/geist": "^5.2.9",
     "@tanstack/react-query": "^5.62.0",
     "@tanstack/react-router": "^1.121.0",
     "@tanstack/react-start": "^1.121.0",
+    "@unom/style": "^0.4.4",
+    "@unom/ui": "^0.8.16",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "lucide-react": "^0.469.0",
+    "motion": "^12.40.0",
+    "radix-ui": "^1.6.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
-    "tailwind-merge": "^2.6.0"
+    "tailwind-merge": "^2.6.0",
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "@inlang/paraglide-js": "^2.0.0",