feat(nav): complete remaining zibll parity (search, i18n, senior menus, CSS)

- Remove obsolete dual-path nav CSS; add utilities + language dropdown styles
- Wire header/mobile translate switcher from i18n config
- Layout-2 inline search hot keywords panel; nav_folding on resize
- NavMenuOptions JSON editors for graphic_card / multi_column_links
- Section-navs zibll posts-nav-lists; page-navs enqueue; mobile article TOC box
- SPA/PHP user-card publish type; rebuild admin assets

src/AKSRT/Admin/Schema/SchemaPageDisplay.php

@@ -64,6 +64,11 @@ class SchemaPageDisplay {
                                 ['label' => '帖子', 'value' => 'topic'],
                                 ['label' => '商品', 'value' => 'product'],
                             ]],
+                            ['key' => 'header_user_newposts_btn', 'label' => '用户卡发布类型', 'type' => 'select', 'default' => 'post', 'options' => [
+                                ['label' => '文章', 'value' => 'post'],
+                                ['label' => '帖子', 'value' => 'topic'],
+                                ['label' => '商品', 'value' => 'product'],
+                            ]],
                             ['key' => 'header_user_newposts_text', 'label' => '用户卡发布文案', 'type' => 'input', 'default' => '发布内容'],
                         ]],
                         ['key' => 'color', 'title' => '颜色设置', 'fields' => [