chore: import upstream snapshot with attribution

docs/mkdocs/javascript/edit_and_feedback.js

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+/**
+ * edit_and_feedback.js
+ *
+ * Enhances MkDocs Material docs pages by:
+ *
+ * 1. Adding a "Question? Give us feedback" link
+ *    below the "Edit" button.
+ *
+ *    - The link opens a GitHub issue with a template,
+ *      auto-filled with the current page URL and path.
+ *
+ * 2. Ensuring the edit button opens in a new tab
+ *    with target="_blank" and rel="noopener".
+ */
+document.addEventListener("DOMContentLoaded", function () {
+    const url = window.location.href;
+    const page = document.body.dataset.mdUrl || location.pathname;
+
+    const feedbackLink = document.createElement("a");
+    feedbackLink.href = `https://github.com/vllm-project/vllm-omni/issues/new?template=100-documentation.yml&title=${encodeURIComponent(
+      `[Docs] Feedback for \`${page}\``
+    )}&body=${encodeURIComponent(`📄 **Reference:**\n${url}\n\n📝 **Feedback:**\n_Your response_`)}`;
+    feedbackLink.target = "_blank";
+    feedbackLink.rel = "noopener";
+    feedbackLink.title = "Provide feedback";
+    feedbackLink.className = "md-content__button";
+    feedbackLink.innerHTML = `
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      height="24px"
+      viewBox="0 -960 960 960"
+      width="24px"
+      fill="currentColor"
+    >
+      <path d="M280-280h280v-80H280v80Zm0-160h400v-80H280v80Zm0-160h400v-80H280v80Zm-80 480q-33 0-56.5-23.5T120-200v-560q0-33 23.5-56.5T200-840h560q33 0 56.5 23.5T840-760v560q0 33-23.5 56.5T760-120H200Zm0-80h560v-560H200v560Zm0-560v560-560Z"/>
+    </svg>
+  `;
+
+    const editButton = document.querySelector('.md-content__button[href*="edit"]');
+
+    if (editButton && editButton.parentNode) {
+      editButton.insertAdjacentElement("beforebegin", feedbackLink);
+
+      editButton.setAttribute("target", "_blank");
+      editButton.setAttribute("rel", "noopener");
+    }
+  });

docs/mkdocs/javascript/mathjax.js

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+// Enables MathJax rendering only on pages that contain math.
+window.MathJax = {
+  tex: {
+    inlineMath: [["\\(", "\\)"]],
+    displayMath: [["\\[", "\\]"]],
+    processEscapes: true,
+    processEnvironments: true,
+  },
+  options: {
+    ignoreHtmlClass: ".*|",
+    processHtmlClass: "arithmatex",
+  },
+};
+
+let mathJaxLoading;
+
+function loadMathJax() {
+  if (window.MathJax.typesetPromise) {
+    return Promise.resolve();
+  }
+  if (!mathJaxLoading) {
+    mathJaxLoading = new Promise((resolve, reject) => {
+      const script = document.createElement("script");
+      script.src = "https://unpkg.com/mathjax@3.2.2/es5/tex-mml-chtml.js";
+      script.async = true;
+      script.onload = resolve;
+      script.onerror = reject;
+      document.head.appendChild(script);
+    });
+  }
+  return mathJaxLoading;
+}
+
+document$.subscribe(() => {
+  if (!document.querySelector(".arithmatex")) {
+    return;
+  }
+  loadMathJax().then(() => {
+    MathJax.startup.output.clearCache();
+    MathJax.typesetClear();
+    MathJax.texReset();
+    MathJax.typesetPromise();
+  });
+});

docs/mkdocs/javascript/memory.js

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+// Opt out of bfcache so large generated API pages are released after navigation.
+window.addEventListener("unload", () => {});

docs/mkdocs/javascript/mermaid.js

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+// Load Mermaid only on pages that contain diagrams.
+let mermaidLoading;
+
+function loadMermaid() {
+  if (window.mermaid) {
+    return Promise.resolve();
+  }
+  if (!mermaidLoading) {
+    mermaidLoading = new Promise((resolve, reject) => {
+      const script = document.createElement("script");
+      script.src = "https://unpkg.com/mermaid@10/dist/mermaid.min.js";
+      script.async = true;
+      script.onload = () => {
+        mermaid.initialize({
+          startOnLoad: false,
+          theme: "default",
+          securityLevel: "loose",
+          flowchart: {
+            useMaxWidth: true,
+            htmlLabels: true,
+          },
+        });
+        resolve();
+      };
+      script.onerror = reject;
+      document.head.appendChild(script);
+    });
+  }
+  return mermaidLoading;
+}
+
+document$.subscribe(() => {
+  if (!document.querySelector(".mermaid")) {
+    return;
+  }
+  loadMermaid().then(() => {
+    mermaid.run({
+      querySelector: ".mermaid",
+      nodes: document.querySelectorAll(".mermaid"),
+    });
+  });
+});

docs/mkdocs/javascript/slack_and_forum.js

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+/**
+ * slack_and_forum.js
+ *
+ * Adds a custom Slack and Forum button to the MkDocs Material header.
+ *
+ */
+
+window.addEventListener('DOMContentLoaded', () => {
+    const headerInner = document.querySelector('.md-header__inner');
+
+    if (headerInner) {
+      const slackButton = document.createElement('button');
+      slackButton.className = 'slack-button';
+      slackButton.title = 'Join us on Slack';
+      slackButton.style.border = 'none';
+      slackButton.style.background = 'transparent';
+      slackButton.style.cursor = 'pointer';
+
+      slackButton.innerHTML = `
+        <img src="https://a.slack-edge.com/80588/marketing/img/icons/icon_slack_hash_colored.png"
+             style="height: 1.1rem;"
+             alt="Slack">
+      `;
+
+      slackButton.addEventListener('click', () => {
+        window.open('https://slack.vllm.ai', '_blank', 'noopener');
+      });
+
+      const forumButton = document.createElement('button');
+      forumButton.className = 'forum-button';
+      forumButton.title = 'Join the Forum';
+      forumButton.style.border = 'none';
+      forumButton.style.background = 'transparent';
+      forumButton.style.cursor = 'pointer';
+
+      forumButton.innerHTML = `
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          viewBox="0 -960 960 960"
+          fill="currentColor"
+        >
+          <path d="M817.85-198.15 698.46-317.54H320q-24.48 0-41.47-16.99T261.54-376v-11.69h424.61q25.39 0 43.47-18.08 18.07-18.08 18.07-43.46v-268.92h11.69q24.48 0 41.47 16.99 17 16.99 17 41.47v461.54ZM179.08-434.69l66.84-66.85h363.31q10.77 0 17.69-6.92 6.93-6.92 6.93-17.69v-246.77q0-10.77-6.93-17.7-6.92-6.92-17.69-6.92H203.69q-10.77 0-17.69 6.92-6.92 6.93-6.92 17.7v338.23Zm-36.93 89.46v-427.69q0-25.39 18.08-43.46 18.08-18.08 43.46-18.08h405.54q25.39 0 43.46 18.08 18.08 18.07 18.08 43.46v246.77q0 25.38-18.08 43.46-18.07 18.07-43.46 18.07H261.54L142.15-345.23Zm36.93-180.92V-797.54v271.39Z"/>
+        </svg>
+      `;
+
+      forumButton.addEventListener('click', () => {
+        window.open('https://discuss.vllm.ai/', '_blank', 'noopener');
+      });
+
+      const githubSource = document.querySelector('.md-header__source');
+      if (githubSource) {
+        githubSource.parentNode.insertBefore(slackButton, githubSource.nextSibling);
+        githubSource.parentNode.insertBefore(forumButton, slackButton.nextSibling);
+      }
+    }
+  });