feat(frontend): align single post page 1:1 with Zibll

Restore Zibll float dual-column shell, fix single settings DTO key mapping,
reorder article footer/actions, and match author bar, prev/next, title/body
typography, and limit-height expand UX.

assets/admin/src/schema/sections/post-list/page.js

@@ -45,6 +45,12 @@ export const pageSchema = {
     post_article_video_cover_scale: 56,
     item_heading_bold: false,
     post_button_toptext: '喜欢就支持一下吧',
+    post_rewards_enabled: false,
+    post_rewards_text: '',
+    post_rewards_image: '',
+    post_rewards_btn_text: '赞赏',
+    article_maxheight_kg: false,
+    article_maxheight: 1000,
   },
   groups: [
     {
@@ -121,6 +127,12 @@ export const pageSchema = {
         { key: 'post_copyright_enabled', label: '版权信息', type: 'switch', default: true },
         { key: 'post_copyright_text', label: '版权默认文案', type: 'textarea', default: '', help: '留空则自动生成"本文由 XX 原创发布"' },
         { key: 'post_button_toptext', label: '按钮上方文案', type: 'input', default: '喜欢就支持一下吧', help: '显示在点赞/打赏/分享按钮上方' },
+        { key: 'post_rewards_enabled', label: '打赏', type: 'switch', default: false },
+        { key: 'post_rewards_btn_text', label: '打赏按钮文案', type: 'input', default: '赞赏', dependsOn: { key: 'post_rewards_enabled', value: true } },
+        { key: 'post_rewards_text', label: '打赏说明', type: 'input', default: '', dependsOn: { key: 'post_rewards_enabled', value: true } },
+        { key: 'post_rewards_image', label: '打赏二维码 URL', type: 'input', default: '', dependsOn: { key: 'post_rewards_enabled', value: true } },
+        { key: 'article_maxheight_kg', label: '正文限高', type: 'switch', default: false, help: '开启后长文默认折叠，可展开全文' },
+        { key: 'article_maxheight', label: '限高像素', type: 'number', default: 1000, min: 200, max: 5000, dependsOn: { key: 'article_maxheight_kg', value: true } },
       ],
     },
     {