Safety: account-level (per-creator) web-of-trust overrides

Add "trusted creator" overrides that suppress the web-of-trust warning/blur
for ALL of a creator's videos until reset — the account-level companion to the
existing per-video "Show anyway".

- cache.js: per-author override store (bitvid:moderationAuthorOverrides:v1),
  keyed by author hex, with get/set/has/clear/list + persist/load, mirroring
  the per-video store.
- moderationDecorator: overrideActive now also honors an account-level override
  for the video's author, so the whole class of WoT warnings clears for every
  video by that creator.
- app.js: load the author overrides on startup.
- Services + contract: getAuthorModerationOverrides / setAuthorModerationOverride
  / clearAuthorModerationOverride; set/clear refresh the feed + fire the shared
  moderation-override event so the Safety tab list updates.
- Safety tab: a "Trusted creators" section — add by npub, list each with a
  Reset, mirroring the Active-overrides section.
- tests: storage set/get/has/clear/list, hex normalization, persist→load,
  invalid-input guard.

Next: the "Always show this creator" button on the video warning overlay
(second entry point) — a larger multi-component UI change, done separately.

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

js/ui/applicationBootstrap.js

@@ -58,6 +58,9 @@ import {
   getDmPrivacySettings,
   setDmPrivacySettings,
   clearModerationOverride,
+  getAuthorModerationOverridesList,
+  setAuthorModerationOverride,
+  clearAuthorModerationOverride,
   persistSavedProfiles,
   getSavedProfiles,
   getActiveProfilePubkey,
@@ -93,6 +96,30 @@ import {
 } from "./components/staticModalAccessibility.js";
 import ModalManager from "./ModalManager.js";
 
+// After an account-level ("trusted creator") override is set/cleared, refresh
+// the feed so every video by that author re-decorates (warning on/off), and
+// fire the shared moderation-override event so the Safety tab list refreshes.
+function notifyAuthorModerationOverrideChanged(app, pubkey) {
+  try {
+    if (typeof document !== "undefined") {
+      document.dispatchEvent(
+        new CustomEvent("video:moderation-override", {
+          detail: { authorPubkey: pubkey || "", accountLevel: true },
+        }),
+      );
+    }
+  } catch (error) {
+    // best-effort
+  }
+  try {
+    if (typeof app?.onVideosShouldRefresh === "function") {
+      void app.onVideosShouldRefresh({ reason: "author-moderation-override" });
+    }
+  } catch (error) {
+    // best-effort
+  }
+}
+
 export default class ApplicationBootstrap {
   constructor({
     app,
@@ -550,6 +577,22 @@ export default class ApplicationBootstrap {
           getModerationOverrides: () => getModerationOverridesList(),
           clearModerationOverride: (descriptor) =>
             clearModerationOverride(descriptor),
+          // Account-level ("trusted creator") WoT overrides. Setting/clearing
+          // one re-renders the feed so every video by that author updates, and
+          // fires the shared event so the Safety tab list refreshes.
+          getAuthorModerationOverrides: () => getAuthorModerationOverridesList(),
+          setAuthorModerationOverride: (pubkey) => {
+            const entry = setAuthorModerationOverride(pubkey, {
+              showAnyway: true,
+            });
+            notifyAuthorModerationOverrideChanged(app, pubkey);
+            return entry;
+          },
+          clearAuthorModerationOverride: (pubkey) => {
+            const removed = clearAuthorModerationOverride(pubkey);
+            notifyAuthorModerationOverrideChanged(app, pubkey);
+            return removed;
+          },
           loadVideos: (forceFetch, context) =>
             app.loadVideos(forceFetch, context),
           onVideosShouldRefresh: (context) =>