Admin ring on comments/channel + pending-submissions dots on Admin tab & Submissions subtab

- adminBadge.js: add applyAdminRing(el, id) for surfaces that already place the
  star on a specific element and just need the ring.
- comments: ring + star on admin authors' avatars; round the comment avatar box
  so the ring reads as a circle.
- channel page: ring the inner rounded avatar box (star already on the wrap).
- Notification dots: red dot on the profile modal's Admin nav tab and on the
  Submissions subtab button when there are pending submissions, so admins know
  where to look. profileModalController.setSubmissionsUnreadIndicator toggles
  both (Admin nav dot gated on the tab being visible); driven from
  applyProfileNotificationDot off app._submissionsPending.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

js/ui/profileModalController.js

@@ -721,6 +721,12 @@ export class ProfileModalController {
     this.navButtons.admin = document.getElementById("profileNavAdmin") || null;
     this.navButtons.safety = document.getElementById("profileNavSafety") || null;
 
+    // Pending-submissions dots: on the Admin nav tab and the Submissions subtab.
+    this.adminNavUnreadDot =
+      document.getElementById("profileNavAdminUnreadDot") || null;
+    this.adminSubmissionsDot =
+      document.getElementById("adminSubtabSubmissionsDot") || null;
+
     this.profileEditBtn = document.getElementById("profileEditBtn") || null;
     this.profileEditBackBtn = document.getElementById("profileEditBackBtn") || null;
 
@@ -1353,6 +1359,26 @@ export class ProfileModalController {
     );
   }
 
+  // Pending-submissions dots for admins: on the Admin nav tab (gated on that tab
+  // being visible) and on the Submissions subtab button inside the admin pane.
+  setSubmissionsUnreadIndicator(visible) {
+    const show = Boolean(visible);
+    const adminButton = this.navButtons.admin;
+    const adminNavVisible =
+      adminButton instanceof HTMLElement &&
+      !adminButton.classList.contains("hidden") &&
+      !adminButton.hasAttribute("hidden");
+    if (this.adminNavUnreadDot instanceof HTMLElement) {
+      this.adminNavUnreadDot.classList.toggle(
+        "is-visible",
+        show && adminNavVisible,
+      );
+    }
+    if (this.adminSubmissionsDot instanceof HTMLElement) {
+      this.adminSubmissionsDot.classList.toggle("is-visible", show);
+    }
+  }
+