✨ feat(frontend): scaffold minimal Nuxt 3 frontend with healthz dashboard (#25)

First Vue 3 / Nuxt 3 / Playwright frontend layer for dance-lessons-coach. Minimal: 1 page, 1 component fetching /api/healthz, 1 e2e test. Out of scope: Storybook, design system, auth pages, deploy.

~95% Mistral autonomous via ICM workspace ~/Work/Vibe/workspaces/frontend-nuxt-scaffold/. Mistral handled the npx nuxi init TUI by falling back to manual file creation (Q-032 documented).

Co-authored-by: Gabriel Radureau <arcodange@gmail.com>
Co-committed-by: Gabriel Radureau <arcodange@gmail.com>

frontend/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "dance-lessons-coach-frontend",
+  "type": "module",
+  "scripts": {
+    "build": "nuxt build",
+    "dev": "nuxt dev",
+    "generate": "nuxt generate",
+    "preview": "nuxt preview",
+    "postinstall": "nuxt prepare"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.59.1",
+    "@types/node": "^25.6.0",
+    "nuxt": "^3.13.0",
+    "typescript": "^6.0.3"
+  },
+  "packageManager": "npm@11.5.2"
+}