feat: initialize project with event order form

This commit establishes the initial structure of the Nuxt application, centered around a new event order form.

Key changes include:
- Setting up the main app layout with a header, footer, and color mode support using @nuxt/ui.
- Creating a multi-part event order form on the index page.
- Introducing a `useEventOrder` composable to manage form state and validation with Zod.
- Adding modular form components under `app/components/eventOrder`.
- Including project configuration files for pnpm, VSCode, and global CSS.

app/components/eventOrder/MetaDetails.vue

@@ -0,0 +1,68 @@
+<template>
+  <UCard>
+    <template #header>
+      <h2 class="text-xl font-bold">{{ secIdx }}. 您的活动信息</h2>
+      <p class="text-muted text-sm">
+        您提供的联系方式与活动信息仅用于沟通与履约，本工作室将妥善保护，不会未经同意向第三方公开或出售。
+      </p>
+    </template>
+
+    <div class="grid gap-4">
+      <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+        <UFormField name="contactName" label="联络人姓名" required>
+          <UInput v-model="orderState.contactName" class="w-full" />
+        </UFormField>
+
+        <UFormField name="contactNumber" label="联系方式（推荐 WhatsApp）">
+          <div class="flex items-center gap-2">
+            <UCheckbox
+              v-model="orderState.isSameContact"
+              label="当前手机号码？"
+              class="whitespace-nowrap"
+            />
+            <UInput
+              v-model="orderState.contactNumber"
+              :disabled="orderState.isSameContact"
+              :class="[
+                'w-full transition-opacity duration-300',
+                orderState.isSameContact ? 'opacity-0 pointer-events-none' : '',
+              ]"
+            />
+          </div>
+        </UFormField>
+      </div>
+
+      <!-- 活动信息 -->
+      <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
+        <UFormField name="eventName" label="活动名称" required>
+          <UInput
+            v-model="orderState.eventName"
+            class="w-full"
+            placeholder="如果可能，请写上活动全名"
+          />
+        </UFormField>
+
+        <UFormField name="eventDate" label="活动日期" required>
+          <UInput type="date" v-model="orderState.eventDate" class="w-full" />
+        </UFormField>
+
+        <UFormField name="eventLocation" label="地点" required>
+          <USelect
+            v-model="orderState.eventLocation"
+            :items="eventLocationItems"
+            placeholder="请选择地点"
+            class="w-full"
+          />
+        </UFormField>
+      </div>
+    </div>
+  </UCard>
+</template>
+
+<script lang="ts" setup>
+const { sectionIndex, orderState, eventLocationItems } = useEventOrder();
+
+const secIdx = ref(++sectionIndex.value);
+</script>
+
+<style></style>