Scaffold iniziale Vue 3 + Vite

Aggiunge struttura base del progetto: package.json, vite.config.js,
index.html con viewport mobile, main.js, CSS globale mobile-first
e .gitignore.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main.js

@@ -0,0 +1,5 @@
+import { createApp } from 'vue'
+import App from './App.vue'
+import './style.css'
+
+createApp(App).mount('#app')

src/style.css

@@ -0,0 +1,74 @@
+*, *::before, *::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+:root {
+  --color-bg: #f5f5f5;
+  --color-surface: #ffffff;
+  --color-primary: #2d6a4f;
+  --color-primary-light: #52b788;
+  --color-text: #1a1a1a;
+  --color-muted: #6b7280;
+  --color-border: #e5e7eb;
+  --color-danger: #dc2626;
+  --radius: 8px;
+  --nav-height: 60px;
+}
+
+html, body {
+  height: 100%;
+  font-family: system-ui, -apple-system, sans-serif;
+  font-size: 16px;
+  background: var(--color-bg);
+  color: var(--color-text);
+}
+
+#app {
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  max-width: 480px;
+  margin: 0 auto;
+  background: var(--color-bg);
+}
+
+.page {
+  flex: 1;
+  overflow-y: auto;
+  padding: 16px;
+  padding-bottom: calc(var(--nav-height) + 16px);
+}
+
+.page-title {
+  font-size: 1.25rem;
+  font-weight: 700;
+  margin-bottom: 16px;
+}
+
+button {
+  font-size: 1rem;
+  cursor: pointer;
+  border: none;
+  border-radius: var(--radius);
+  min-height: 44px;
+  padding: 0 16px;
+}
+
+input[type="text"],
+input[type="number"] {
+  font-size: 1rem;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  padding: 10px 12px;
+  min-height: 44px;
+  width: 100%;
+  background: var(--color-surface);
+  color: var(--color-text);
+}
+
+input:focus {
+  outline: 2px solid var(--color-primary);
+  outline-offset: 1px;
+}