fix(footer): align template_1 shell with Zibll 1:1

Rewrite footer markup to zib_footer_con contract: single adaptive logo
(white-src/dark-src), fcode-links HTML primary, float third column,
hidden-xs, toggle-radius contacts, miniimg structure, customize-first
footer-conter. Restyle zibll-shell CSS and drop conflicting site-footer
BEM padding so filled footer data matches Zibll layout.

assets/admin/src/pages/content/FooterSettings.vue

@@ -107,10 +107,10 @@
               <n-form-item label="邮箱">
                 <n-input v-model:value="form.footer_contact_email" placeholder="邮箱地址" />
               </n-form-item>
-              <n-form-item label="联系区上方自定义代码">
-                <n-input v-model:value="form.fcode_t2_code_1" type="textarea" :rows="2" placeholder="可选 HTML" />
+              <n-form-item label="链接 HTML（fcode_t2_code_1）">
+                <n-input v-model:value="form.fcode_t2_code_1" type="textarea" :rows="3" placeholder="推荐直接写 <a href=&quot;/&quot;>首页</a> 等链接 HTML；为空时回退快速链接/友链/热门分类" />
               </n-form-item>
-              <n-form-item label="联系区下方自定义代码">
+              <n-form-item label="链接下方自定义代码">
                 <n-input v-model:value="form.fcode_t2_code_2" type="textarea" :rows="2" placeholder="备案号等 HTML" />
               </n-form-item>
             </n-form>
@@ -283,9 +283,7 @@
             <n-form :model="form" label-placement="left" label-width="140" class="aksrt-form">
               <n-form-item label="页脚布局模板">
                 <n-radio-group v-model:value="form.layout_template">
-                  <n-radio-button value="default">默认</n-radio-button>
-                  <n-radio-button value="compact">紧凑</n-radio-button>
-                  <n-radio-button value="centered">居中</n-radio-button>
+                  <n-radio-button value="template_1">模板一（Zibll）</n-radio-button>
                 </n-radio-group>
               </n-form-item>
               <n-form-item label="热门分类数量">
@@ -450,7 +448,7 @@ const form = reactive({
   more_links: [],
   hot_categories: 5,
   copyright_text: '',
-  layout_template: 'default',
+  layout_template: 'template_1',
   // §2.3 三列结构化字段
   footer_t1_m_s: ['pc', 'mobile'],
   footer_t1_img: '',
@@ -804,7 +802,7 @@ async function loadSettings() {
       form.more_links = data.more_links || []
       form.hot_categories = data.hot_categories ?? 5
       form.copyright_text = data.copyright_text || ''
-      form.layout_template = data.layout_template || 'default'
+      form.layout_template = 'template_1'
       // §2.3 三列结构化字段
       form.footer_t1_m_s = Array.isArray(data.footer_t1_m_s) ? data.footer_t1_m_s : ['pc', 'mobile']
       form.footer_t1_img = data.footer_t1_img || ''

assets/admin/src/schema/sections/page-display/index.js

@@ -898,8 +898,8 @@ export const pageDisplaySchemas = {
         fields: [
           { key: 'footer_contact_m_s', label: '显示设备', type: 'checkbox', default: ['pc', 'mobile'] },
           { key: 'footer_contact_more', label: '更多联系项', type: 'textarea', default: '' },
-          { key: 'fcode_t2_code_1', label: '联系区上方自定义代码', type: 'textarea', default: '' },
-          { key: 'fcode_t2_code_2', label: '联系区下方自定义代码', type: 'textarea', default: '' },
+          { key: 'fcode_t2_code_1', label: '链接 HTML（fcode_t2_code_1）', type: 'textarea', default: '' },
+          { key: 'fcode_t2_code_2', label: '链接下方自定义代码', type: 'textarea', default: '' },
         ],
       },
       {