Tidy the upcoming-meeting alert Details panel

The expanded Details panel had two visible problems pointed out by the user:

1. The "Notes / الملاحظات" block always rendered — including a "No notes
   added." fallback for meetings without notes — adding empty noise the
   user did not want.
2. Attendee names were printed as plain text but the database stores them
   as sanitized rich-text HTML, so they showed up as literal "<p>محمد علي</p>".

Changes:
- Removed the entire Notes block from the DetailsPanel sub-component in
  artifacts/tx-os/src/components/executive-meetings/upcoming-meeting-alert.tsx.
  Dropped the unused StickyNote icon import and the now-unused notesText
  constant.
- Each attendee name is now rendered with the same HTML-stripping pattern
  the popup already uses for the meeting title:
  name.replace(/<[^>]+>/g, "").trim() || name.
- Removed the now-unused i18n keys executiveMeetings.alert.detailsNotes
  and detailsNoNotes from both en.json and ar.json.

Out of scope (per plan): no schema/API changes, no rich-text rendering
of attendee names, no color/toggle changes.

Verification:
- TypeScript: clean.
- e2e (testing skill): a fresh meeting with HTML-tagged attendee names
  was created, the popup expanded, and the test confirmed (a) no Notes
  section / "alert-details-notes" testid present, (b) attendee names
  visible without "<p>", "</p>", "<span>" tags, and (c) the meeting URL
  link still renders.

artifacts/tx-os/src/components/executive-meetings/upcoming-meeting-alert.tsx

@@ -34,7 +34,6 @@ import {
   Clock,
   ExternalLink,
   GripVertical,
-  StickyNote,
   Users,
   X,
 } from "lucide-react";
@@ -1350,7 +1349,6 @@ function DetailsPanel({
     groups[key].push(p);
   }
 
-  const notesText = (meeting.notes ?? "").replace(/<[^>]+>/g, "").trim();
   const safeUrl = (() => {
     const raw = (meeting.meetingUrl ?? "").trim();
     if (!raw) return null;
@@ -1393,26 +1391,6 @@ function DetailsPanel({
         </div>
       ) : null}
 
-      <div className="mb-2 flex items-start gap-2">
-        <StickyNote
-          className="mt-0.5 h-3.5 w-3.5 shrink-0 opacity-70"
-          aria-hidden="true"
-        />
-        <div className="min-w-0 flex-1">
-          <div className="font-semibold opacity-80">
-            {t("executiveMeetings.alert.detailsNotes")}
-          </div>
-          <div
-            className="whitespace-pre-wrap break-words opacity-90"
-            data-testid="alert-details-notes"
-          >
-            {notesText.length > 0
-              ? notesText
-              : t("executiveMeetings.alert.detailsNoNotes")}
-          </div>
-        </div>
-      </div>
-
       <div className="flex items-start gap-2">
         <Users
           className="mt-0.5 h-3.5 w-3.5 shrink-0 opacity-70"
@@ -1442,9 +1420,15 @@ function DetailsPanel({
                       {t(`executiveMeetings.alert.detailsGroup.${g}`)}
                     </div>
                     <ul className="list-disc ps-4 leading-snug">
-                      {list.map((p, idx) => (
-                        <li key={`${g}-${p.id ?? idx}-${p.name}`}>{p.name}</li>
-                      ))}
+                      {list.map((p, idx) => {
+                        const cleanName =
+                          p.name.replace(/<[^>]+>/g, "").trim() || p.name;
+                        return (
+                          <li key={`${g}-${p.id ?? idx}-${p.name}`}>
+                            {cleanName}
+                          </li>
+                        );
+                      })}
                     </ul>
                   </div>
                 );

artifacts/tx-os/src/locales/ar.json

@@ -1068,8 +1068,6 @@
       "details": "تفاصيل",
       "detailsClose": "إخفاء التفاصيل",
       "detailsUrl": "رابط الاجتماع",
-      "detailsNotes": "الملاحظات",
-      "detailsNoNotes": "لا توجد ملاحظات.",
       "detailsAttendees": "الحضور ({{n}})",
       "detailsNoAttendees": "لا يوجد حضور بعد.",
       "detailsGroup": {

artifacts/tx-os/src/locales/en.json

@@ -986,8 +986,6 @@
       "details": "Details",
       "detailsClose": "Hide details",
       "detailsUrl": "Meeting link",
-      "detailsNotes": "Notes",
-      "detailsNoNotes": "No notes added.",
       "detailsAttendees": "Attendees ({{n}})",
       "detailsNoAttendees": "No attendees yet.",
       "detailsGroup": {