fix(admin): restore Vite admin source files

assets/admin/src/components/captcha/TencentConfig.vue

@@ -0,0 +1,42 @@
+<template>
+  <n-form label-placement="left" label-width="130">
+    <n-space vertical style="width:100%">
+      <n-divider title-placement="left">云 API 密钥（用于 TC3 签名）</n-divider>
+      <n-alert type="warning" style="margin-bottom: 12px;">
+        请从 <n-a href="https://console.cloud.tencent.com/cam/capi" target="_blank">访问管理控制台 → API 密钥管理</n-a> 获取。建议使用子账号密钥并仅授予 <code>QcloudCaptchaFullAccess</code> 权限。
+      </n-alert>
+      <n-form-item label="SecretId">
+        <n-input v-model:value="model.secret_id" placeholder="腾讯云 API SecretId" autocomplete="off" />
+      </n-form-item>
+      <n-form-item label="SecretKey">
+        <n-input v-model:value="model.secret_key" type="text" placeholder="腾讯云 API SecretKey" autocomplete="off" show-password-on="click" />
+      </n-form-item>
+
+      <n-divider title-placement="left">验证码密钥</n-divider>
+      <n-form-item label="CaptchaAppId">
+        <n-input v-model:value="model.app_id" placeholder="从验证码控制台获取 CaptchaAppId" autocomplete="off" />
+      </n-form-item>
+      <n-form-item label="AppSecretKey">
+        <n-input v-model:value="model.app_secret_key" type="text" placeholder="从验证码控制台获取 AppSecretKey" autocomplete="off" show-password-on="click" />
+        <template #feedback>请从「验证管理 → 基础配置」完整复制，注意区分 I/l/1/O/0</template>
+      </n-form-item>
+
+      <n-alert type="info" style="margin-bottom: 12px;">
+        腾讯云验证码 2.0 — 验证类型（滑动拼图、文字点选、空间语义等）请在<a href="https://console.cloud.tencent.com/captcha/graphical" target="_blank">验证码控制台</a>配置。
+      </n-alert>
+      <n-tag v-if="isConfigured" type="success" size="small">✓ 已完整配置</n-tag>
+      <n-tag v-else type="warning" size="small">未完成配置</n-tag>
+    </n-space>
+  </n-form>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+
+const model = defineModel({ type: Object, default: () => ({}) })
+
+const isConfigured = computed(() => {
+  const c = model.value
+  return !!(c.secret_id && c.secret_key && c.app_id && c.app_secret_key)
+})
+</script>