ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

extras/mermaid-init.js

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+/**
+ * Mermaid loader for MkDocs Material.
+ *
+ * Material's `navigation.instant` swaps page content without a full reload,
+ * so Mermaid must be (re-)initialized after every page swap. We hook into
+ * both the initial load and Material's custom `document-subscriber` event.
+ *
+ * The mermaid.js runtime itself is loaded via mkdocs.yml `extra_javascript`
+ * with `defer`, so it's available by the time this script runs.
+ */
+(function () {
+  function isMermaidReady() {
+    return typeof window.mermaid !== 'undefined';
+  }
+
+  function renderAll() {
+    if (!isMermaidReady()) return;
+    try {
+      window.mermaid.initialize({
+        startOnLoad: false,
+        theme: document.documentElement.getAttribute('data-md-color-scheme') === 'slate'
+          ? 'dark'
+          : 'default',
+        securityLevel: 'loose',     // allow $ in labels, e.g. $web_search
+        flowchart: { curve: 'basis', useMaxWidth: true },
+      });
+      window.mermaid.run({ querySelector: '.mermaid:not([data-processed])' });
+    } catch (e) {
+      console.warn('[mermaid] render failed:', e);
+    }
+  }
+
+  // Re-render whenever Material swaps to a new page.
+  document.addEventListener('DOMContentLoaded', renderAll);
+  document$.subscribe(renderAll);   // `document$` is provided by Material
+
+  // Re-theme when the user toggles light/dark.
+  new MutationObserver(renderAll)
+    .observe(document.documentElement,
+      { attributes: true, attributeFilter: ['data-md-color-scheme'] });
+})();