fix(single): match reference article action bar 1:1

The action bar used a locally invented pill-chip style that overrode the
reference theme's 80px icon-over-text columns, and the JS toggled a
class no stylesheet targeted — so likes/favorites showed no selected
state at all.

- restore reference markup: <svg class="icon"> + <text>/<count> and the
  actived class, with data-stat-count/data-base-count preserved
- toggle actived plus a transient action-animation so the lovestar
  keyframes finally reach the DOM
- drop the CSS overrides and now-dead action-btn/.action-btn--reward
  and .post-actions-card rules; main.css already carried the reference
  rules the overrides were shadowing

assets/css/frontend/single-post/related-toc.css

@@ -250,8 +250,6 @@ body.dark-theme .limit-height .read-more {
     .single-cover__content { padding: 14px; }
     .single-cover__title { font-size: 1rem; }
     .post-nav-box { grid-template-columns: 1fr; }
-    .post-actions-card__buttons { gap: 8px; }
-    .action-btn { padding: 8px 14px; font-size: 13px; }
 }
 
 /* ===== 鏆楄壊妯″紡 ===== */