feat(identity): author card, per-user tip, comment caps, task status

Author card uses configurable limit/orderby/style and self CTAs.
Tip is per-user weixin/alipay QR modal (no site-global image).
Comment action permissions honor user_caps matrix.
Free points tasks expose done_today/passive status + better comment deep link.
audit-admin-contracts errors=0.

inc/classes/admin/schema/class-aksrt-admin-schema-post-list.php

@@ -75,6 +75,17 @@ class AKSRT_Admin_Schema_Post_List {
                             ['key' => 'breadcrumbs_single_text', 'label' => '末项显示「正文」', 'type' => 'switch', 'default' => true, 'depends_on' => 'breadcrumbs_single_s', 'description' => '关闭后末项显示文章标题'],
                             ['key' => 'post_prevnext_s', 'label' => '上一篇/下一篇', 'type' => 'switch', 'default' => true],
                             ['key' => 'post_authordesc_s', 'label' => '作者简介', 'type' => 'switch', 'default' => true],
+                            ['key' => 'post_author_card_limit', 'label' => '作者卡文章数', 'type' => 'number', 'default' => 6, 'min' => 0, 'max' => 12],
+                            ['key' => 'post_author_card_orderby', 'label' => '作者卡文章排序', 'type' => 'select', 'default' => 'views', 'options' => [
+                                ['label' => '浏览量', 'value' => 'views'],
+                                ['label' => '发布时间', 'value' => 'date'],
+                                ['label' => '更新时间', 'value' => 'modified'],
+                                ['label' => '评论数', 'value' => 'comment_count'],
+                            ]],
+                            ['key' => 'post_author_card_style', 'label' => '作者卡文章样式', 'type' => 'radio', 'default' => 'card', 'options' => [
+                                ['label' => '卡片', 'value' => 'card'],
+                                ['label' => '列表', 'value' => 'list'],
+                            ]],
                             ['key' => 'post_single_hide_time_s', 'label' => '隐藏文章时间', 'type' => 'switch', 'default' => false],
                         ]],
                         ['key' => 'cover', 'title' => '封面展示', 'fields' => [
@@ -127,8 +138,8 @@ class AKSRT_Admin_Schema_Post_List {
                             ['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' => '', 'description' => '留空则自动生成"本文由 XX 原创发布"'],
                             ['key' => 'post_wechat_share', 'label' => '微信分享', 'type' => 'switch', 'default' => false],
-                            ['key' => 'post_rewards_enabled', 'label' => '打赏功能', 'type' => 'switch', 'default' => false],
-                            ['key' => 'post_rewards_text', 'label' => '打赏文案', 'type' => 'input', 'default' => ''],
+                            ['key' => 'post_rewards_s', 'label' => '用户打赏', 'type' => 'switch', 'default' => false],
+                            ['key' => 'post_rewards_text', 'label' => '打赏按钮文案', 'type' => 'input', 'default' => '赞赏'],
                             ['key' => 'post_button_toptext', 'label' => '按钮上方文案', 'type' => 'input', 'default' => '喜欢就支持一下吧'],
                         ]],
                         ['key' => 'content', 'title' => '内容处理', 'fields' => [