feat: moderator-scoped admin access + fix push notifications not displaying (v0.66.0)

Moderator role existed in the schema and was already respected by
comment deletion, but every admin page/route treated moderator
identically to a regular user (403/redirect). Wires it up narrowly:
admin/layout.tsx now lets admin+moderator through and filters the
nav by role, while every admin-only page (users, tiers, settings,
webhooks, insights, etc.) explicitly redirects moderators away via a
new requireFullAdminPage() helper -- the nav filter is UX, this is
the actual gate. Moderators land on Reports and Recipes: reports
GET/PATCH now accept requireAdmin({allowModerator: true}), and a new
PATCH /api/v1/admin/recipes/[id] lets admin+moderator unpublish a
public recipe (flip to private) as a takedown action, audit-logged.

Also found and fixed a real bug while auditing the PWA push pipeline
for a "push click-through" gap: public/sw.js had no `push` event
listener at all, so incoming push messages never displayed anything
-- push was silently non-functional end-to-end despite the
subscribe/send plumbing all working. Added the push listener
(showNotification) and a notificationclick listener that focuses an
existing tab or opens one at the payload's url.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/lib/changelog.ts

@@ -1,5 +1,5 @@
 // Mirrors CHANGELOG.md at the repo root — update both together.
-export const APP_VERSION = "0.65.3";
+export const APP_VERSION = "0.66.0";
 
 export type ChangelogEntry = {
   version: string;
@@ -11,6 +11,14 @@ export type ChangelogEntry = {
 };
 
 export const CHANGELOG: ChangelogEntry[] = [
+  {
+    version: "0.66.0",
+    date: "2026-07-21 09:00",
+    added: [
+      "Moderator role is now wired up: moderators get access to Admin → Reports (view/resolve) and Admin → Recipes (view + unpublish a public recipe as a takedown action). Every other admin section stays admin-only, enforced server-side on each page, not just hidden from the nav.",
+      "Push notifications now actually display. The service worker had no push event listener at all, so incoming push messages never showed anything — fixed, plus a notificationclick handler that focuses an existing tab or opens one at the notification's target URL.",
+    ],
+  },
   {
     version: "0.65.3",
     date: "2026-07-21 01:20",