feat: highlight search matches and document the working UI

apps/desktop/src/path-display.ts

@@ -0,0 +1,6 @@
+/** Explorer-style labels; callers retain the original path for file operations. */
+export function displayPath(path: string) {
+  if (path.startsWith("\\\\?\\UNC\\")) return "\\\\" + path.slice(8);
+  if (/^\\\\\?\\[A-Za-z]:\\/.test(path)) return path.slice(4);
+  return path;
+}