feat(zero): admin panel section + site /zero page + autogen card

Admin (/admin/zero):
  - new AdminZero with list, status filters, generate button (bucket + allow_dup)
  - per-note actions: approve, edit inline, regenerate (bucket pick), skip,
    'publish now' (approve + scheduled_at=now → runner picks up within 1m)
  - config panel: toggle on/off, generate/approve/publish hour MSK, site URL base
  - new pin 'Зеро' (☕) in AdminNav

Site (zeropost.ru):
  - ZeroBlock — feed of last 3-6 Zero notes, rendered on home next to Серии
  - /zero — full Zero notes list page with character bio block (avatar + bullets)

Autogen integration:
  - ZeroAutogenCard on /admin/autogen — amber card with on/off, hour pickers,
    'generate now' and last-3 preview, link to full section

Plumbing:
  - lib/engine.js: listZeroNotes(), getZeroCharacter()
  - app/admin/api/zero/[...path]/route.js: catch-all proxy with cookie auth

app/zero/page.js

@@ -0,0 +1,75 @@
+import Header from '@/components/Header';
+import Footer from '@/components/Footer';
+import ZeroBlock from '@/components/ZeroBlock';
+import { listZeroNotes, getZeroCharacter } from '@/lib/engine';
+import { Coffee } from 'lucide-react';
+
+export const dynamic = 'force-dynamic';
+export const metadata = {
+  title: 'Заметки от Зеро',
+  description: 'Короткие посты от AI-персонажа Зеро — мысли программиста о работе, инструментах и забавных багах',
+};
+
+export default async function ZeroPage() {
+  const [notes, character] = await Promise.all([
+    listZeroNotes({ limit: 100 }),
+    getZeroCharacter(),
+  ]);
+
+  return (
+    <>
+      <Header />
+      <main className="pt-10 pb-16">
+        <div className="container-wide mb-10">
+          <div
+            className="inline-flex items-center gap-2 text-xs accent px-3 py-1.5 rounded-full mb-4"
+            style={{ background: 'rgb(var(--accent) / 0.1)', border: '1px solid rgb(var(--accent) / 0.2)' }}
+          >
+            <Coffee className="w-3.5 h-3.5" /> AI-персонаж
+          </div>
+          <h1 className="text-3xl sm:text-5xl font-bold ink mb-3 leading-tight">
+            Заметки от Зеро
+          </h1>
+          <p className="mute text-base sm:text-lg max-w-2xl mb-8">
+            Короткие посты от первого лица в Telegram-канале{' '}
+            <a href="https://t.me/zeropostru" target="_blank" rel="noreferrer" className="accent hover:underline">@zeropostru</a>.
+            Программист с многолетним опытом, любит копаться под капотом, постоянно носится с кофе.
+          </p>
+
+          {character?.character?.bio && (
+            <div className="rounded-xl border border-amber-200 dark:border-amber-900 bg-amber-50/50 dark:bg-amber-950/20 p-5 sm:p-6 max-w-3xl">
+              <div className="flex items-start gap-4">
+                {/* eslint-disable-next-line @next/next/no-img-element */}
+                <img
+                  src="/uploads/zero-coffee.webp"
+                  alt="Зеро"
+                  className="w-16 h-16 rounded-full object-cover bg-amber-100 dark:bg-amber-950/40 ring-2 ring-amber-300 dark:ring-amber-800 shrink-0"
+                />
+                <div className="min-w-0">
+                  <div className="text-sm font-semibold ink mb-2">Кто такой Зеро</div>
+                  <ul className="space-y-1 text-sm mute">
+                    {character.character.bio.map((line, i) => (
+                      <li key={i}>— {line}</li>
+                    ))}
+                  </ul>
+                </div>
+              </div>
+            </div>
+          )}
+        </div>
+
+        {notes.length > 0 ? (
+          <ZeroBlock notes={notes} />
+        ) : (
+          <div className="container-wide">
+            <div className="rounded-xl border border-neutral-200 dark:border-neutral-800 p-10 text-center">
+              <Coffee className="w-8 h-8 text-amber-500 mx-auto mb-3" />
+              <p className="mute text-sm">Зеро ещё не написал ни одной заметки. Скоро появится.</p>
+            </div>
+          </div>
+        )}
+      </main>
+      <Footer />
+    </>
+  );
+}