feat(single): align author bar follow and reward actions with the site flows

- guests get the sign-in trigger instead of a redirect to the login page,
  for both follow and wallet reward controls
- follow requests swap the label for an inline loader and block a second
  submit; the followed state uses the .actived hook
- follower counts sync through data-follow-count on the user homepage
  (the previous selector matched nothing) and only for the viewed profile
- reward button uses the secondary action colour; the reward template is
  only rendered for signed-in visitors
- drop the unused author-hero aria-disabled rule and stale wording in the
  touched comments

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

templates/parts/user/author-hero.php

@@ -76,8 +76,8 @@ $show_header_notification = !empty($notification_settings['enabled'])
 	&& in_array('user_home_header', (array) ($notification_settings['icon_show'] ?? []), true);
 $messages_url = $show_header_notification && function_exists('jio_get_messages_page_url') ? jio_get_messages_page_url() : '';
 $unread_count = $is_own ? jio_get_user_unread_notification_count($user_id) : 0;
-// 封面三点菜单末项：管理员 → 禁封/解封（参考主题 author_header_drop_lists 钩子语义，
-// 禁封权限优先于举报）；否则 → 举报用户（保持既有契约）。
+// 封面三点菜单末项：管理员 → 禁封/解封（禁封权限优先于举报）；
+// 否则 → 举报用户（保持既有契约）。
 $cover_ban_html = function_exists('jio_get_user_cover_menu_action_html')
 	? jio_get_user_cover_menu_action_html($user_id)
 	: '';
@@ -151,8 +151,8 @@ $show_cover_menu = $has_more_details || $show_cover_report || $cover_ban_html !=
 			<?php endif; ?>
 
 			<?php
-			// 治理状态徽章占据身份行元信息位（参考主题 author_header_identity 钩子：
-			// 红=违规已封号 / 黄=小黑屋禁封中 / 灰=禁言中，字段与颜色统一管理）。
+			// 治理状态徽章占据身份行元信息位：
+			// 红=违规已封号 / 黄=小黑屋禁封中 / 灰=禁言中，字段与颜色统一管理。
 			$ban_badge = function_exists('jio_get_user_ban_identity_badge')
 				? jio_get_user_ban_identity_badge($user_id)
 				: '';
@@ -194,7 +194,7 @@ $show_cover_menu = $has_more_details || $show_cover_report || $cover_ban_html !=
 				<?php endif; ?>
 			<?php else : ?>
 					<?php if ($show_follow) : ?>
-						<?php echo jio_get_user_follow('btn-outline btn-sm jio-author-hero__follow-btn', (int) $user_id, null, null, __('登录后关注', 'jio')); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>
+						<?php echo jio_get_user_follow('btn-outline btn-sm jio-author-hero__follow-btn', (int) $user_id); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>
 					<?php endif; ?>
 				<?php endif; ?>