Improve notification deep-linking and add Arabic meeting reminders

Enhance notification handling to preserve deep-link parameters, add relatedId and relatedType to notifications for better association, and implement Arabic pluralization for meeting reminders.

artifacts/tx-os/public/sw.js

@@ -18,7 +18,12 @@ function scopedUrl(relative) {
   // Strip a leading slash from `relative` so URL() treats it as a
   // path under scope rather than origin-relative.
   const cleaned = String(relative || "").replace(/^\/+/, "");
-  return new URL(cleaned, self.registration.scope).pathname;
+  const resolved = new URL(cleaned, self.registration.scope);
+  // Preserve the query string and hash so notification deep-links
+  // (e.g. "/meetings?meeting=12" or "/notes?thread=7") survive the click
+  // handler — taking only .pathname would drop them and land the user on
+  // the generic page instead of the specific item.
+  return resolved.pathname + resolved.search + resolved.hash;
 }
 
 self.addEventListener("install", () => {