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.

inc/classes/admin/class-aksrt-admin-global-controller.php

@@ -448,7 +448,7 @@ class AKSRT_Admin_Global_Controller extends AKSRT_Admin_Controller_Base {
                 'more_links'          => [],
                 'hot_categories'      => 5,
                 'copyright_text'      => '',
-                'layout_template'     => 'default',
+                'layout_template'     => 'template_1',
                 'footer_t1_m_s'       => ['pc', 'mobile'],
                 'footer_t1_img'       => '',
                 'footer_t1_img_dark'  => '',
@@ -477,8 +477,7 @@ class AKSRT_Admin_Global_Controller extends AKSRT_Admin_Controller_Base {
             'more_links'          => isset($params['more_links']) ? $this->sanitize_link_list($params['more_links']) : [],
             'hot_categories'      => (int) ($params['hot_categories'] ?? 5),
             'copyright_text'      => sanitize_textarea_field($params['copyright_text'] ?? ''),
-            'layout_template'     => in_array($params['layout_template'] ?? '', ['default', 'compact', 'centered'], true)
-                ? $params['layout_template'] : 'default',
+            'layout_template'     => 'template_1',
             'footer_t1_m_s'       => $this->sanitize_device_visibility($params['footer_t1_m_s'] ?? ['pc', 'mobile']),
             'footer_t1_img'       => esc_url_raw($params['footer_t1_img'] ?? ''),
             'footer_t1_img_dark'  => esc_url_raw($params['footer_t1_img_dark'] ?? ''),

inc/classes/admin/schema/class-aksrt-admin-schema-page-display.php

@@ -450,8 +450,8 @@ class AKSRT_Admin_Schema_Page_Display {
                                 ['label' => '移动端', 'value' => 'mobile'],
                             ]],
                             ['key' => 'footer_contact_more', 'label' => '更多联系项', 'type' => 'textarea', 'default' => '', 'help' => 'JSON 数组，每项含 desc/icon/link/img'],
-                            ['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（备案等）', 'type' => 'textarea', 'default' => ''],
+                            ['key' => 'fcode_t2_code_1', 'label' => '链接 HTML（fcode_t2_code_1）', 'type' => 'textarea', 'default' => '', 'help' => '直接写 <a> 链接 HTML；为空时回退快速链接/友链/热门分类'],
+                            ['key' => 'fcode_t2_code_2', 'label' => '链接下方自定义代码', 'type' => 'textarea', 'default' => '', 'help' => '备案号等 HTML'],
                         ]],
                         ['key' => 'mini_qr', 'title' => '二维码图片组（第三列）', 'fields' => [
                             ['key' => 'footer_mini_img_m_s', 'label' => '显示设备', 'type' => 'checkbox', 'default' => ['pc', 'mobile'], 'options' => [