Vendor OpenClaw source as Adolf fork baseline

Adolf is a fork/vendored clone of github.com/openclaw/openclaw (v2026.6.11),
free to diverge. Tree copied sans upstream .git; upstream remote added for
future syncs. Node pinned to 24 (.nvmrc); engines already require >=22.19.
Preserves docs/ARCHITECTURE.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LeqyaxJF2nbRXJtae2kNB2

docs/nav-tabs-underline.js

@@ -0,0 +1,104 @@
+/**
+ * Docs UI enhancement that mirrors the active nav tab underline with a stable
+ * animated underline element.
+ */
+(() => {
+  const NAV_TABS_SELECTOR = ".nav-tabs";
+  const ACTIVE_UNDERLINE_SELECTOR = ".nav-tabs-item > div.bg-primary";
+  const UNDERLINE_CLASS = "nav-tabs-underline";
+  const READY_CLASS = "nav-tabs-underline-ready";
+
+  let navTabs = null;
+  let navTabsObserver = null;
+  let lastX = null;
+  let lastWidth = null;
+
+  const ensureUnderline = (tabs) => {
+    let underline = tabs.querySelector(`.${UNDERLINE_CLASS}`);
+    if (!underline) {
+      underline = document.createElement("div");
+      underline.className = UNDERLINE_CLASS;
+      tabs.appendChild(underline);
+    }
+    return underline;
+  };
+
+  const getActiveTab = (tabs) => {
+    const activeUnderline = tabs.querySelector(ACTIVE_UNDERLINE_SELECTOR);
+    return activeUnderline?.closest(".nav-tabs-item") ?? null;
+  };
+
+  const updateUnderline = () => {
+    if (!navTabs) {
+      return;
+    }
+
+    ensureUnderline(navTabs);
+
+    const activeTab = getActiveTab(navTabs);
+    if (!activeTab) {
+      navTabs.classList.remove(READY_CLASS);
+      return;
+    }
+
+    const navRect = navTabs.getBoundingClientRect();
+    const tabRect = activeTab.getBoundingClientRect();
+    const left = tabRect.left - navRect.left;
+
+    navTabs.style.setProperty("--nav-tab-underline-x", `${left}px`);
+    navTabs.style.setProperty("--nav-tab-underline-width", `${tabRect.width}px`);
+    navTabs.classList.add(READY_CLASS);
+
+    lastX = left;
+    lastWidth = tabRect.width;
+  };
+
+  const scheduleUpdate = () => {
+    requestAnimationFrame(updateUnderline);
+  };
+
+  const setupNavTabsObserver = (tabs) => {
+    if (!tabs || tabs === navTabs) {
+      return;
+    }
+
+    navTabs = tabs;
+    ensureUnderline(navTabs);
+    if (lastX !== null && lastWidth !== null) {
+      navTabs.style.setProperty("--nav-tab-underline-x", `${lastX}px`);
+      navTabs.style.setProperty("--nav-tab-underline-width", `${lastWidth}px`);
+      navTabs.classList.add(READY_CLASS);
+    }
+    navTabsObserver?.disconnect();
+    navTabsObserver = new MutationObserver(scheduleUpdate);
+    navTabsObserver.observe(navTabs, {
+      subtree: true,
+      attributes: true,
+      attributeFilter: ["class"],
+    });
+
+    scheduleUpdate();
+  };
+
+  const setupObservers = () => {
+    const tabs = document.querySelector(NAV_TABS_SELECTOR);
+    if (tabs) {
+      setupNavTabsObserver(tabs);
+    }
+  };
+
+  const rootObserver = new MutationObserver(setupObservers);
+
+  if (document.readyState === "loading") {
+    document.addEventListener("DOMContentLoaded", () => {
+      setupObservers();
+      rootObserver.observe(document.body, { childList: true, subtree: true });
+    });
+  } else {
+    setupObservers();
+    rootObserver.observe(document.body, { childList: true, subtree: true });
+  }
+
+  window.addEventListener("resize", scheduleUpdate);
+  void document.fonts?.ready?.then(scheduleUpdate, () => {});
+})();