Admin star badge on admin avatars across the app

Show a small gold "verified admin" star in the corner opposite the red
notification dot whenever a rendered profile belongs to a bitvid admin
(the super admin or a current list editor).

- adminBadge.js (new): isAdminActor(hex|npub) sync check against
  accessControl, and applyAdminStar(container, id) which adds/removes a
  single `.admin-star` in a non-clipped, positioned container. Idempotent.
- CSS: `.admin-star` (top-left gold disc, mirrors the top-right dot),
  `.dm-avatar-wrap`, and position:relative on the comment avatar wrapper.
- Profile button: app.refreshAdminStar() lights the logged-in user's star;
  re-runs on login/logout and on accessControl.onEditorsChange (so a
  late-loading editor list still resolves).
- Comments: star on comment-author avatars (commentNodeFactory).
- Channel page: wrap the clipped avatar and star the channel owner.
- DMs: Avatar gains an opt-in adminId — only admin avatars get wrapped so
  non-admin rows are byte-identical; ContactRow passes the peer pubkey.
- tests: admin-badge unit coverage (recognition, idempotency, removal).

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

js/ui/applicationBootstrap.js

@@ -35,6 +35,7 @@ import { relayManager } from "../relayManager.js";
 import { userBlocks } from "../userBlocks.js";
 import { subscriptions } from "../subscriptions.js";
 import { accessControl } from "../accessControl.js";
+import { applyAdminStar } from "./adminBadge.js";
 import moderationService from "../services/moderationService.js";
 import ProfileIdentityController from "./profileIdentityController.js";
 import VideoListViewController from "./videoListViewController.js";
@@ -977,6 +978,21 @@ export default class ApplicationBootstrap {
       app.applyProfileNotificationDot();
     };
 
+    // The profile button shows the logged-in user; light its admin star when
+    // that user is a bitvid admin. Re-runs on editor-list load so a moderator
+    // added after startup still gets the star.
+    app.refreshAdminStar = () => {
+      try {
+        const npub =
+          typeof app.getCurrentUserNpub === "function"
+            ? app.getCurrentUserNpub()
+            : "";
+        applyAdminStar(app.profileButton, npub || "");
+      } catch (error) {
+        devLogger.warn("[Application] Failed to refresh admin star", error);
+      }
+    };
+
     const nostrUnsubscribes = [];
     nostrUnsubscribes.push(
       app.nostrService.on("subscription:changed", ({ subscription }) => {
@@ -1050,6 +1066,12 @@ export default class ApplicationBootstrap {
     }
     nostrUnsubscribes.push(() => clearInterval(submissionsPollId));
     void app.refreshSubmissionsIndicator({ reason: "startup" });
+    if (typeof accessControl.onEditorsChange === "function") {
+      nostrUnsubscribes.push(
+        accessControl.onEditorsChange(() => app.refreshAdminStar?.()),
+      );
+    }
+    app.refreshAdminStar();
     app.unsubscribeFromNostrService = () => {
       while (nostrUnsubscribes.length) {
         const unsubscribe = nostrUnsubscribes.pop();