用户主页减层：拆出 panel/sidebar partial 并清理失效 CSS 选择器

把 page-user-home 的内容面板与侧栏抽到 user-home partial，删除公开主页已不再使用的 uc-header/user-home-stats 等 CSS 残段。

templates/parts/user-home/panel-follow.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Public user home — follow tab panel.
+ *
+ * @package AKSRT
+ */
+
+defined('ABSPATH') || exit;
+
+$args = is_array($args ?? null) ? $args : [];
+extract($args, EXTR_SKIP); // phpcs:ignore WordPress.PHP.DontExtract.extract_extract
+
+?>
+				<?php if (in_array('follow', $enabled_tabs, true)) : ?>
+				<div id="panel-follow" class="dashboard-panel<?php echo $active_tab === 'follow' ? ' is-active' : ''; ?>" role="tabpanel"<?php echo $active_tab !== 'follow' ? ' hidden' : ''; ?>>
+					<?php
+					if ($forum_instance) :
+						$followed = $forum_instance->get_user_followed_plates($user_id);
+						if (!empty($followed)) : ?>
+							<div class="uh-forum__plate-grid">
+								<?php foreach ($followed as $plate) : ?>
+									<a class="uh-forum__plate-card" href="<?php echo esc_url(get_permalink((int) ($plate['id'] ?? 0))); ?>">
+										<div class="uh-forum__plate-name"><?php echo esc_html((string) ($plate['name'] ?? '')); ?></div>
+										<div class="uh-forum__plate-stats">
+											<span><?php printf(esc_html__('%d 帖子', 'aksrt'), (int) ($plate['topic_count'] ?? 0)); ?></span>
+											<span><?php printf(esc_html__('%d 关注', 'aksrt'), (int) ($plate['follow_count'] ?? 0)); ?></span>
+										</div>
+									</a>
+								<?php endforeach; ?>
+							</div>
+						<?php else : ?>
+							<?php aksrt_render_profile_empty($svg_empty_post, __('暂未关注任何版块', 'aksrt')); ?>
+						<?php endif;
+					else :
+						aksrt_render_profile_empty($svg_empty_post, __('暂无关注内容', 'aksrt'));
+					endif;
+					?>
+				</div>
+				<?php endif; ?>