fix(frontend): close single 1:1 residuals without legacy paths

Unify TOC ownership, real video episode list, slider overlay, single-query related list, Zibll user-card after-box, and new-route subtitle/meta contracts.

assets/js/section-navs.js

@@ -19,19 +19,31 @@
     var navContainer = document.querySelector('[data-nav]');
     if (!navContainer) return;
 
+    // Single-post TOC is owned by page-template.js (.posts-nav-box .toc-list).
+    // Do not invent a second .aksrt-section-nav tree on article singles.
+    if (document.querySelector('.posts-nav-box .toc-list, .posts-nav-box.toc-widget')) {
+      return;
+    }
+
     var headings = navContainer.querySelectorAll(HEADING_SEL);
     if (headings.length < MIN_HEADINGS) return;
 
     var tocContainer = document.querySelector('.posts-nav-lists, .aksrt-section-nav');
     if (!tocContainer) {
+      // Docs / page-navs only: create a dedicated container. Never inject into single sidebars.
+      if (document.body.classList.contains('single') || document.body.classList.contains('single-post')) {
+        return;
+      }
       tocContainer = document.createElement('nav');
       tocContainer.className = 'aksrt-section-nav';
       tocContainer.setAttribute('aria-label', '文章目录');
       var sidebar = document.querySelector('.content-layout__aside, .sidebar, .widget-area');
       if (sidebar) {
         sidebar.insertBefore(tocContainer, sidebar.firstChild);
-      } else {
+      } else if (navContainer.parentNode) {
         navContainer.parentNode.insertBefore(tocContainer, navContainer);
+      } else {
+        return;
       }
     }
 

assets/js/video-player.js

@@ -220,9 +220,16 @@
     if (!switchBtn) return;
 
     var container = switchBtn.closest('.aksrt-video') || switchBtn.closest('[data-aksrt-video]');
+    // Single cover: episodes sit in .single-video-footer; player is sibling under .single-video
+    if (!container) {
+      var singleVideo = switchBtn.closest('.single-video, .single-head-cover');
+      if (singleVideo) {
+        container = singleVideo.querySelector('.aksrt-video, [data-aksrt-video]');
+      }
+    }
     if (!container) return;
 
-    var src = switchBtn.dataset.src || switchBtn.getAttribute('href');
+    var src = switchBtn.dataset.src || switchBtn.getAttribute('video-url') || switchBtn.getAttribute('href');
     if (!src) return;
 
     e.preventDefault();
@@ -237,9 +244,14 @@
     }
 
     // 高亮当前集
-    var siblings = container.parentElement ? container.parentElement.querySelectorAll('.switch-video, .switch-iframe') : [];
-    siblings.forEach(function (btn) { btn.classList.remove('is-active'); });
+    var scope = switchBtn.closest('.featured-video-episode') || (container.parentElement || document);
+    var siblings = scope.querySelectorAll('.switch-video, .switch-iframe');
+    siblings.forEach(function (btn) {
+      btn.classList.remove('is-active');
+      btn.classList.remove('active');
+    });
     switchBtn.classList.add('is-active');
+    switchBtn.classList.add('active');
   });
 
   // ── Public API ──