feat(user-center): promote invite into standalone 推广中心 tab

Register a dedicated `promotion` dashboard panel gated by the existing
invite switches (credits + invite reward + invite registration), and move
the invite card out of the revenue tab so 收益中心 is pure earnings/withdrawal.

- src/User/Center.php: register promotion panel; revenue no longer depends
  on invite being on
- inc/helpers/user-center-renderers/profile-promotion.php: new panel body
  hosting the existing [data-aksrt-invite] card
- profile-revenue.php: drop the invite section; aksrt-user-center.php: drop
  unused show_invite_section context, add promotion to built-in tabs + view map
- repoint invite/promotion deep-link aliases from revenue to promotion across
  tab-url builder, tab resolver, runtime tabAliases, urls.php, and the
  revenue-JS enqueue gate
- sidebar-nav.php: add 推广中心 service entry; shell.css: entry icon color;
  sidebar-creator.php: reword revenue card
- UserRuntime.php: allow promotion in configurable tabs

inc/helpers/user-center-renderers/profile-revenue.php

@@ -15,7 +15,6 @@ if ($user_id <= 0) {
 }
 
 $show_revenue_section = !empty($context['show_revenue_section']);
-$show_invite_section = !empty($context['show_invite_section']);
 $revenue_view = function_exists('aksrt_get_revenue_page_view')
 	? aksrt_get_revenue_page_view($user_id)
 	: ['balance' => 0, 'total_earned' => 0, 'total_withdrawn' => 0, 'records' => []];
@@ -59,6 +58,4 @@ $revenue_url = static function (int $target_page): string {
 		<section class="aksrt-revenue-page__section"><h3><?php esc_html_e('收益明细', 'aksrt'); ?></h3><?php if ($paged_records) : ?><div class="aksrt-revenue-page__list"><?php foreach ($paged_records as $record) : ?><div class="aksrt-revenue-page__item"><div><strong><?php echo esc_html((string) ($record['title'] ?? '')); ?></strong><time><?php echo esc_html((string) ($record['created_at'] ?? '')); ?></time></div><span class="<?php echo ($record['type'] ?? '') === 'withdrawal' ? 'is-out' : 'is-in'; ?>"><?php echo ($record['type'] ?? '') === 'withdrawal' ? '-' : '+'; ?>¥<?php echo esc_html(number_format_i18n((float) ($record['amount'] ?? 0), 2)); ?></span></div><?php endforeach; ?></div><?php if ($total_pages > 1) : ?><nav class="aksrt-revenue-page__pagination" aria-label="<?php esc_attr_e('收益分页', 'aksrt'); ?>"><?php for ($index = 1; $index <= $total_pages; $index++) : ?><a class="aksrt-revenue-page__page-chip<?php echo $index === $page ? ' is-active' : ''; ?>" href="<?php echo esc_url($revenue_url($index)); ?>"><?php echo esc_html((string) $index); ?></a><?php endfor; ?></nav><?php endif; ?><?php else : ?><p class="aksrt-revenue-page__empty"><?php esc_html_e('暂无收益明细', 'aksrt'); ?></p><?php endif; ?></section>
 		</section>
 	<?php endif; ?>
-
-	<?php if ($show_invite_section) : require __DIR__ . '/profile-invite.php'; endif; ?>
 </div>