docs: add search widget to options page

docs/static/script/search.js

@@ -0,0 +1,40 @@
+document.addEventListener("DOMContentLoaded", () => {
+  if (!window.location.pathname.endsWith("options.html")) return;
+
+  const searchBar = document.createDocumentFragment();
+  const searchDiv = document.createElement("div");
+  searchDiv.id = "search-bar";
+  searchDiv.innerHTML = `
+    <input type="text" id="search-input" placeholder="Search options by ID..." />
+    <div id="search-results"></div>
+  `;
+  searchBar.appendChild(searchDiv);
+  document.body.prepend(searchDiv);
+
+  const dtElements = Array.from(document.querySelectorAll("dt"));
+  const ddElements = Array.from(document.querySelectorAll("dd"));
+  const dtOptionIds = dtElements.map(
+    (dt) => dt.querySelector("a")?.id.toLowerCase() || "",
+  );
+
+  if (dtElements.length === 0 || ddElements.length === 0) {
+    console.warn("Something went wrong, page may be loaded incorrectly.");
+    return;
+  }
+
+  let debounceTimeout;
+  document.getElementById("search-input").addEventListener("input", (event) => {
+    clearTimeout(debounceTimeout);
+    debounceTimeout = setTimeout(() => {
+      const query = event.target.value.toLowerCase();
+      dtElements.forEach((dt, index) => {
+        const isMatch = dtOptionIds[index].includes(query);
+
+        if (dt.classList.contains("hidden") !== !isMatch) {
+          dt.classList.toggle("hidden", !isMatch);
+          ddElements[index]?.classList.toggle("hidden", !isMatch);
+        }
+      });
+    }, 200);
+  });
+});