revert: 移除 mermaid zoom，恢复纯 mermaid 渲染

docs/css/mermaid-zoom.css

@@ -1,31 +0,0 @@
-.mermaid-zoom-overlay {
-  position: fixed;
-  inset: 0;
-  z-index: 9999;
-  background: rgba(0, 0, 0, 0.75);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  cursor: zoom-out;
-  opacity: 0;
-  transition: opacity 0.2s ease;
-}
-
-.mermaid-zoom-overlay.active {
-  opacity: 1;
-}
-
-.mermaid-zoom-overlay svg {
-  max-width: 95vw;
-  max-height: 95vh;
-  background: #fff;
-  border-radius: 8px;
-  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
-  padding: 1.5rem;
-}
-
-/* 让 Mermaid 区域看起来可点击 */
-.mermaid,
-.mermaid svg {
-  cursor: zoom-in;
-}

docs/js/mermaid-zoom.js

@@ -1,96 +0,0 @@
-// Mermaid 渲染 + 点击放大
-;(function () {
-  // 等待 Mermaid 库加载
-  function waitForMermaid(cb, tries) {
-    tries = tries || 0;
-    if (typeof mermaid !== 'undefined') { cb(); return; }
-    if (tries > 50) { console.error('[mermaid-zoom] mermaid lib not found'); return; }
-    setTimeout(function () { waitForMermaid(cb, tries + 1); }, 200);
-  }
-
-  waitForMermaid(function () {
-    // 初始化 mermaid（如果还没初始化）
-    mermaid.initialize({
-      startOnLoad: false,
-      theme: 'default',
-      securityLevel: 'loose'
-    });
-
-    // 找所有未渲染的 .mermaid div，逐一渲染
-    var els = document.querySelectorAll('.mermaid');
-    var queue = [];
-    els.forEach(function (el, i) {
-      var src = el.textContent.trim();
-      if (!src || el.getAttribute('data-processed')) return;
-      queue.push({ el: el, id: 'mermaid-svg-' + i, src: src });
-    });
-
-    // 串行渲染，避免并发冲突
-    function renderNext() {
-      if (queue.length === 0) {
-        // 全部渲染完，绑定点击
-        bindClickZoom();
-        return;
-      }
-      var item = queue.shift();
-      mermaid.render(item.id, item.src).then(function (result) {
-        item.el.innerHTML = result.svg;
-        item.el.setAttribute('data-processed', 'true');
-        renderNext();
-      }).catch(function (err) {
-        console.warn('[mermaid-zoom] render failed for', item.id, err);
-        // 跳过失败的，继续渲染下一个
-        item.el.innerHTML = '<p style="color:#c62828;padding:8px">图表渲染失败</p>';
-        item.el.setAttribute('data-processed', 'true');
-        renderNext();
-      });
-    }
-
-    renderNext();
-  });
-
-  function bindClickZoom() {
-    document.addEventListener('click', function (e) {
-      var target = e.target.closest('.mermaid svg');
-      if (!target) {
-        // 也试 .mermaid 容器本身
-        var m = e.target.closest('.mermaid');
-        if (m) target = m.querySelector('svg');
-      }
-      if (!target) return;
-
-      e.preventDefault();
-      e.stopPropagation();
-
-      var clone = target.cloneNode(true);
-      clone.removeAttribute('width');
-      clone.removeAttribute('height');
-      clone.style.width = 'auto';
-      clone.style.height = 'auto';
-      clone.style.maxWidth = '95vw';
-      clone.style.maxHeight = '95vh';
-
-      var overlay = document.createElement('div');
-      overlay.className = 'mermaid-zoom-overlay';
-      overlay.appendChild(clone);
-
-      overlay.addEventListener('click', function () {
-        overlay.classList.remove('active');
-        setTimeout(function () { overlay.remove(); }, 200);
-      });
-
-      document.addEventListener('keydown', function handler(e) {
-        if (e.key === 'Escape') {
-          overlay.classList.remove('active');
-          setTimeout(function () { overlay.remove(); }, 200);
-          document.removeEventListener('keydown', handler);
-        }
-      });
-
-      document.body.appendChild(overlay);
-      requestAnimationFrame(function () {
-        overlay.classList.add('active');
-      });
-    });
-  }
-})();

mkdocs.yml

@@ -78,12 +78,8 @@ markdown_extensions:
       custom_checkbox: true
   - pymdownx.tilde
 
-extra_css:
-  - css/mermaid-zoom.css
-
 extra_javascript:
   - https://unpkg.com/mermaid@10/dist/mermaid.min.js
-  - js/mermaid-zoom.js
 
 nav:
   - 首页: index.md