feat: 文章详情页右下角悬浮操作栏 + 作者自赋能拦截

- 赞/踩/赋能/收藏/评论/回顶部移至右下角悬浮操作栏，固定定位
- 回顶部按钮页面顶部隐藏，滚动后显示，平滑滚动
- 评论按钮点击定位到评论区（NAV 下方）
- 赋能按钮作者可见但禁止自赋能，点击弹出 toast 提示
- 未登录用户赋能/收藏点击跳转登录页
- postReactions 引用统一改为 postFloatBar

templates/MetaLab-2026/static/js/post-comments.js

@@ -4,7 +4,7 @@
     var commentsSection = document.getElementById('comments');
     if (!commentsSection) return;
 
-    var postId = commentsSection.closest('.container').querySelector('#postReactions').dataset.postId;
+    var postId = commentsSection.closest('.container').querySelector('#postFloatBar').dataset.postId;
     var commentsList = document.getElementById('commentsList');
     var commentsTotal = document.getElementById('commentsTotal');
     var loadMoreBtn = document.getElementById('commentsLoadMore');

templates/MetaLab-2026/static/js/post-energize.js

@@ -9,6 +9,20 @@
     if (!btn || !overlay) return;
 
     var postId = btn.dataset.id;
+    var isAuthor = btn.dataset.uid && btn.dataset.authorUid &&
+        btn.dataset.uid === btn.dataset.authorUid;
+
+    function showToast(msg) {
+        var toast = document.createElement('div');
+        toast.className = 'energize-toast';
+        toast.textContent = msg;
+        document.body.appendChild(toast);
+        setTimeout(function() { toast.classList.add('show'); }, 10);
+        setTimeout(function() {
+            toast.classList.remove('show');
+            setTimeout(function() { toast.remove(); }, 300);
+        }, 2000);
+    }
 
     function showOverlay() {
         overlay.style.display = 'flex';
@@ -21,6 +35,10 @@
     }
 
     btn.addEventListener('click', function() {
+        if (isAuthor) {
+            showToast('无法给自己赋能');
+            return;
+        }
         fetch('/api/energy/info')
             .then(function(r) { return r.json(); })
             .then(function(d) {

templates/MetaLab-2026/static/js/post-favorite.js

@@ -2,7 +2,7 @@
 (function() {
     var favBtn = document.getElementById('favBtn');
     var favCountEl = document.getElementById('favCount');
-    var container = document.getElementById('postReactions');
+    var container = document.getElementById('postFloatBar');
     var overlay = document.getElementById('favOverlay');
     var closeBtn = document.getElementById('favClose');
     var folderListEl = document.getElementById('favFolderCheckList');

templates/MetaLab-2026/static/js/post-reactions.js

@@ -1,6 +1,6 @@
 // 赞/踩系统
 (function() {
-    var container = document.getElementById('postReactions');
+    var container = document.getElementById('postFloatBar');
     var likeBtn = document.getElementById('likeBtn');
     var dislikeBtn = document.getElementById('dislikeBtn');
     var likesCountEl = document.getElementById('likesCount');