Visual enhancements for dark mode, along with search functionality for service requests and installed base

src/features/opportunities/customer-table-search.js

@@ -0,0 +1,24 @@
+function createCustomerTableSearch({ environment }) {
+  function createSearch({ label, onSearch, getValues }) {
+    const input = environment.document.createElement("input");
+    input.type = "search";
+    input.className = "opportunities-extension-customer-table-search";
+    input.placeholder = label;
+    input.setAttribute("aria-label", label);
+    input.addEventListener("input", onSearch);
+    const normalize = value => String(value ?? "").normalize("NFD").replace(/[\u0300-\u036f]/g, "").toLowerCase();
+    let index = new WeakMap();
+    return { input,
+      reset() { index = new WeakMap(); },
+      filter(items) {
+        const terms = normalize(input.value).trim().split(/\s+/).filter(Boolean);
+        if (!terms.length) return items;
+        return items.filter(item => {
+          if (!index.has(item)) index.set(item, getValues(item).map(normalize));
+          return terms.every(term => index.get(item).some(value => value.includes(term)));
+        });
+      }
+    };
+  }
+  return { createSearch };
+}