feat(zero): admin UI for Zero notes management

Adds new admin section 'Заметки Зеро' (☕) with:
  - manual 'Generate' button with channel/bucket/allow-dup form
  - status filter tabs with counters (draft/approved/published/failed/skipped)
  - per-note actions: approve / edit inline / regenerate with bucket pick / skip
  - status-colored cards with bucket icon, pose, scheduled time MSK
  - error display with attempt counter
  - tokens & model footer

Files:
  app/api/admin/zero/[...path]/route.js  catch-all proxy → engine
  components/admin/AdminZero.js          main component
  components/AdminPanel.js               +section in sidebar

components/AdminPanel.js

@@ -1,6 +1,6 @@
 'use client';
 import { useState, useEffect } from 'react';
-import { Settings2, CreditCard, TrendingUp, Users, ChevronRight, Loader2, Eye, EyeOff, Save, RefreshCw, Check, AlertCircle, BarChart3, ArrowLeft, Zap, Tag, AlertTriangle, BookOpen, Sliders, Mail } from 'lucide-react';
+import { Coffee, Settings2, CreditCard, TrendingUp, Users, ChevronRight, Loader2, Eye, EyeOff, Save, RefreshCw, Check, AlertCircle, BarChart3, ArrowLeft, Zap, Tag, AlertTriangle, BookOpen, Sliders, Mail } from 'lucide-react';
 import Link from 'next/link';
 import AdminBilling from './admin/AdminBilling';
 import AdminUsers   from './admin/AdminUsers';
@@ -10,6 +10,7 @@ import AdminLogs    from './admin/AdminLogs';
 import AdminAutogen from './admin/AdminAutogen';
 import AdminContent  from './admin/AdminContent';
 import AdminTopicBank from './admin/AdminTopicBank';
+import AdminZero from './admin/AdminZero';
 
 // ──────────────────────────────────────────────────────────────
 // Sidebar navigation
@@ -25,6 +26,7 @@ const SECTIONS = [
   { id: 'autogen',   label: 'Автогенерация',      icon: BookOpen,    desc: 'Расписание статей блога' },
   { id: 'content',   label: 'Контент-дефолты',    icon: Sliders,    desc: 'Настройки для новых каналов' },
   { id: 'topicbank', label: 'Банк тем блога',      icon: BookOpen,   desc: 'Темы для zeropost.ru' },
+  { id: 'zero',      label: 'Заметки Зеро',          icon: Coffee,      desc: 'AI-персонаж в @zeropostru' },
   { id: 'smtp',      label: 'Email / SMTP',         icon: Mail,       desc: 'Уведомления пользователям' },
   { id: 'plans',     label: 'Тарифы',               icon: BarChart3,  desc: 'Планы, кредиты, операции' },
   { id: 'promos',    label: 'Промокоды',         icon: Tag,         desc: 'Коды для кредитов и скидок' },
@@ -81,6 +83,7 @@ export default function AdminPanel({ initialSection = 'settings' }) {
           {section === 'autogen'  && <AdminAutogen />}
           {section === 'content'   && <AdminContent />}
           {section === 'topicbank' && <AdminTopicBank />}
+          {section === 'zero'      && <AdminZero />}
           {section === 'smtp'      && <SettingsSection categories={['smtp']} extraActions={<SmtpTestButton />} />}
           {section === 'plans'     && <PlansSection />}
           {section === 'promos'   && <AdminPromos />}

components/admin/AdminZero.js

@@ -0,0 +1,396 @@
+'use client';
+import { useState, useEffect, useCallback } from 'react';
+import {
+  Loader2, RefreshCw, Plus, Check, X, Edit3, Save, Zap, Send,
+  Coffee, Bug, Wrench, MessageCircle, Sparkles, ChevronDown, Trash2,
+} from 'lucide-react';
+
+// ──────────────────────────────────────────────────────────────
+// Метаданные для UI
+// ──────────────────────────────────────────────────────────────
+const STATUS_META = {
+  draft:     { label: 'Черновик',     color: 'text-amber-400',  bg: 'bg-amber-500/10',  border: 'border-amber-500/30' },
+  approved:  { label: 'Одобрено',     color: 'text-blue-400',   bg: 'bg-blue-500/10',   border: 'border-blue-500/30' },
+  sending:   { label: 'Отправка…',    color: 'text-cyan-400',   bg: 'bg-cyan-500/10',   border: 'border-cyan-500/30' },
+  published: { label: 'Опубликовано', color: 'text-emerald-400',bg: 'bg-emerald-500/10',border: 'border-emerald-500/30' },
+  failed:    { label: 'Ошибка',       color: 'text-red-400',    bg: 'bg-red-500/10',    border: 'border-red-500/30' },
+  skipped:   { label: 'Пропущено',    color: 'text-gray-500',   bg: 'bg-surface2',      border: 'border-border' },
+};
+
+const BUCKET_ICON = {
+  bug_story:        Bug,
+  tools:            Wrench,
+  coffee_thoughts:  Coffee,
+  ai_industry:      Sparkles,
+};
+
+function bucketIcon(key) { return BUCKET_ICON[key] || MessageCircle; }
+
+function mskTime(iso) {
+  if (!iso) return '—';
+  const d = new Date(iso);
+  return d.toLocaleString('ru-RU', { timeZone: 'Europe/Moscow', day: '2-digit', month: '2-digit', hour: '2-digit', minute: '2-digit' });
+}
+
+function wordCount(s) { return s ? s.trim().split(/\s+/).length : 0; }
+
+// ──────────────────────────────────────────────────────────────
+// Main component
+// ──────────────────────────────────────────────────────────────
+export default function AdminZero() {
+  const [notes, setNotes]       = useState([]);
+  const [buckets, setBuckets]   = useState([]);
+  const [loading, setLoading]   = useState(true);
+  const [filter, setFilter]     = useState('all');
+  const [msg, setMsg]           = useState('');
+
+  // Генерация
+  const [genOpen, setGenOpen]   = useState(false);
+  const [genForm, setGenForm]   = useState({ channel_id: 1, force_bucket: '', allow_today_dup: false });
+  const [generating, setGen]    = useState(false);
+
+  // Edit
+  const [editId, setEditId]     = useState(null);
+  const [editText, setEditText] = useState('');
+  const [saving, setSaving]     = useState(false);
+
+  // Regenerate
+  const [regenId, setRegenId]   = useState(null);
+  const [regenBucket, setRegenBucket] = useState('');
+
+  // ────── загрузка ──────
+  const load = useCallback(async () => {
+    setLoading(true);
+    try {
+      const r = await fetch('/api/admin/zero/notes?limit=100').then(r => r.json());
+      setNotes(r.items || []);
+    } catch (e) {
+      setMsg('Ошибка загрузки: ' + e.message);
+    }
+    setLoading(false);
+  }, []);
+
+  useEffect(() => {
+    load();
+    fetch('/api/admin/zero/buckets').then(r => r.json()).then(r => setBuckets(r.buckets || []));
+  }, [load]);
+
+  const flash = (text) => {
+    setMsg(text);
+    setTimeout(() => setMsg(''), 3000);
+  };
+
+  // ────── actions ──────
+  async function generate() {
+    setGen(true);
+    try {
+      const r = await fetch('/api/admin/zero/generate', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          channel_id: Number(genForm.channel_id),
+          force_bucket: genForm.force_bucket || undefined,
+          allow_today_dup: genForm.allow_today_dup,
+        }),
+      });
+      const data = await r.json();
+      if (!r.ok) throw new Error(data.error || 'Ошибка генерации');
+      flash(`✓ Черновик #${data.note.id} создан · ведро ${data.note.theme_bucket}`);
+      setGenOpen(false);
+      await load();
+    } catch (e) {
+      flash('✗ ' + e.message);
+    }
+    setGen(false);
+  }
+
+  async function approve(id) {
+    const r = await fetch(`/api/admin/zero/notes/${id}/approve`, { method: 'POST' });
+    if (r.ok) { flash(`✓ Заметка #${id} одобрена`); load(); }
+    else { const d = await r.json(); flash('✗ ' + (d.error || 'fail')); }
+  }
+
+  async function skip(id) {
+    if (!confirm('Пропустить эту заметку? Она не будет опубликована.')) return;
+    const r = await fetch(`/api/admin/zero/notes/${id}/skip`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ reason: 'skipped by admin via UI' }),
+    });
+    if (r.ok) { flash(`Заметка #${id} пропущена`); load(); }
+  }
+
+  async function regenerate(id) {
+    const r = await fetch(`/api/admin/zero/notes/${id}/regenerate`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ force_bucket: regenBucket || undefined }),
+    });
+    const data = await r.json();
+    if (r.ok) { flash(`✓ Регенерация #${id} → #${data.note?.id}`); setRegenId(null); setRegenBucket(''); load(); }
+    else flash('✗ ' + data.error);
+  }
+
+  function startEdit(note) {
+    setEditId(note.id);
+    setEditText(note.content);
+  }
+
+  async function saveEdit(id) {
+    setSaving(true);
+    try {
+      const r = await fetch(`/api/admin/zero/notes/${id}`, {
+        method: 'PATCH',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ content: editText }),
+      });
+      if (r.ok) { flash('✓ Сохранено'); setEditId(null); load(); }
+      else { const d = await r.json(); flash('✗ ' + d.error); }
+    } catch (e) { flash('✗ ' + e.message); }
+    setSaving(false);
+  }
+
+  // ────── filter + counts ──────
+  const counts = notes.reduce((acc, n) => { acc[n.status] = (acc[n.status] || 0) + 1; return acc; }, {});
+  const filtered = filter === 'all' ? notes : notes.filter(n => n.status === filter);
+
+  return (
+    <div className="space-y-5">
+      {/* HEADER */}
+      <div className="flex items-center justify-between">
+        <div>
+          <h2 className="font-semibold">Заметки от Зеро</h2>
+          <p className="text-xs text-gray-400 mt-0.5">Короткие посты в @zeropostru от AI-персонажа · 13:00 МСК ежедневно</p>
+        </div>
+        <div className="flex items-center gap-2">
+          {msg && <span className="text-sm text-emerald-400">{msg}</span>}
+          <button onClick={() => setGenOpen(v => !v)} className="btn-primary px-3 py-1.5 text-sm flex items-center gap-1.5">
+            <Plus className="w-3.5 h-3.5" /> Сгенерировать
+          </button>
+          <button onClick={load} className="btn-ghost p-2">
+            <RefreshCw className={`w-4 h-4 ${loading ? 'animate-spin' : ''}`} />
+          </button>
+        </div>
+      </div>
+
+      {/* GENERATE FORM */}
+      {genOpen && (
+        <div className="card p-4 border-accent/30 bg-accent/5 space-y-3">
+          <h3 className="font-medium text-sm flex items-center gap-2">
+            <Zap className="w-4 h-4 text-accent" /> Новый черновик
+          </h3>
+          <div className="grid grid-cols-1 sm:grid-cols-3 gap-3">
+            <div>
+              <label className="label text-xs">Канал (channel_id)</label>
+              <input type="number" value={genForm.channel_id}
+                onChange={e => setGenForm(f => ({ ...f, channel_id: e.target.value }))}
+                className="input text-sm py-1.5" />
+            </div>
+            <div>
+              <label className="label text-xs">Ведро темы</label>
+              <select value={genForm.force_bucket}
+                onChange={e => setGenForm(f => ({ ...f, force_bucket: e.target.value }))}
+                className="input text-sm py-1.5">
+                <option value="">Случайное (anti-repeat)</option>
+                {buckets.map(b => <option key={b.key} value={b.key}>{b.label}</option>)}
+              </select>
+            </div>
+            <div className="flex items-end">
+              <label className="flex items-center gap-2 text-sm cursor-pointer">
+                <input type="checkbox" checked={genForm.allow_today_dup}
+                  onChange={e => setGenForm(f => ({ ...f, allow_today_dup: e.target.checked }))} />
+                Разрешить второй черновик за день
+              </label>
+            </div>
+          </div>
+          <div className="flex gap-2">
+            <button onClick={generate} disabled={generating}
+              className="btn-primary px-4 py-1.5 text-sm flex items-center gap-1.5">
+              {generating ? <Loader2 className="w-3.5 h-3.5 animate-spin" /> : <Zap className="w-3.5 h-3.5" />}
+              {generating ? 'Генерация ~20-30 сек…' : 'Запустить'}
+            </button>
+            <button onClick={() => setGenOpen(false)} className="btn-ghost px-3 py-1.5 text-sm">Отмена</button>
+          </div>
+        </div>
+      )}
+
+      {/* FILTER TABS */}
+      <div className="flex flex-wrap gap-1.5 text-sm">
+        <FilterTab active={filter === 'all'} onClick={() => setFilter('all')} label={`Все · ${notes.length}`} />
+        {Object.entries(STATUS_META).map(([key, meta]) => {
+          const cnt = counts[key] || 0;
+          if (cnt === 0 && key !== 'draft' && key !== 'approved') return null;
+          return <FilterTab key={key} active={filter === key} onClick={() => setFilter(key)}
+            label={`${meta.label} · ${cnt}`} colorClass={meta.color} />;
+        })}
+      </div>
+
+      {/* LIST */}
+      {loading && notes.length === 0 && (
+        <div className="py-8 text-center"><Loader2 className="w-5 h-5 animate-spin mx-auto text-accent" /></div>
+      )}
+      {!loading && filtered.length === 0 && (
+        <div className="card p-8 text-center text-sm text-gray-400">
+          Заметок в этом разделе нет. Жми «Сгенерировать» чтобы создать черновик.
+        </div>
+      )}
+
+      <div className="space-y-3">
+        {filtered.map(note => (
+          <NoteCard key={note.id} note={note}
+            buckets={buckets}
+            isEditing={editId === note.id}
+            editText={editText}
+            setEditText={setEditText}
+            saving={saving}
+            onStartEdit={() => startEdit(note)}
+            onCancelEdit={() => setEditId(null)}
+            onSaveEdit={() => saveEdit(note.id)}
+            onApprove={() => approve(note.id)}
+            onSkip={() => skip(note.id)}
+            isRegen={regenId === note.id}
+            regenBucket={regenBucket}
+            setRegenBucket={setRegenBucket}
+            onRegenStart={() => { setRegenId(note.id); setRegenBucket(''); }}
+            onRegenCancel={() => setRegenId(null)}
+            onRegenConfirm={() => regenerate(note.id)} />
+        ))}
+      </div>
+    </div>
+  );
+}
+
+// ──────────────────────────────────────────────────────────────
+// Sub-components
+// ──────────────────────────────────────────────────────────────
+function FilterTab({ active, onClick, label, colorClass }) {
+  return (
+    <button onClick={onClick}
+      className={`px-3 py-1 rounded-md border transition-colors ${
+        active ? 'border-accent text-accent bg-accent/10' : 'border-border text-gray-400 hover:bg-surface2'
+      } ${colorClass || ''}`}>
+      {label}
+    </button>
+  );
+}
+
+function NoteCard({
+  note, buckets,
+  isEditing, editText, setEditText, saving, onStartEdit, onCancelEdit, onSaveEdit,
+  onApprove, onSkip,
+  isRegen, regenBucket, setRegenBucket, onRegenStart, onRegenCancel, onRegenConfirm,
+}) {
+  const meta = STATUS_META[note.status] || STATUS_META.draft;
+  const Icon = bucketIcon(note.theme_bucket);
+  const bucketLabel = buckets.find(b => b.key === note.theme_bucket)?.label || note.theme_bucket;
+  const canApprove   = note.status === 'draft';
+  const canEdit      = ['draft', 'approved'].includes(note.status);
+  const canRegen     = ['draft', 'failed'].includes(note.status);
+  const canSkip      = ['draft', 'approved'].includes(note.status);
+
+  return (
+    <div className={`card p-4 border ${meta.border}`}>
+      {/* HEADER */}
+      <div className="flex items-start gap-3 mb-3">
+        <Icon className="w-5 h-5 text-accent shrink-0 mt-0.5" />
+        <div className="flex-1 min-w-0">
+          <div className="flex flex-wrap items-center gap-2 text-xs">
+            <span className="font-mono text-gray-500">#{note.id}</span>
+            <span className={`px-1.5 py-0.5 rounded ${meta.bg} ${meta.color} font-medium`}>{meta.label}</span>
+            <span className="text-gray-400">· {bucketLabel}</span>
+            {note.pose && <span className="text-gray-500">· поза: {note.pose}</span>}
+            <span className="text-gray-500">· {note.status === 'published'
+              ? `опубликовано ${mskTime(note.published_at)}`
+              : `на ${mskTime(note.scheduled_at)} МСК`}</span>
+          </div>
+          {note.theme && <div className="text-xs text-gray-400 mt-1 truncate">тема: {note.theme}</div>}
+        </div>
+      </div>
+
+      {/* CONTENT or EDIT */}
+      {isEditing ? (
+        <div className="space-y-2">
+          <textarea value={editText} onChange={e => setEditText(e.target.value)}
+            rows={Math.max(6, editText.split('\n').length + 1)}
+            className="input w-full text-sm font-mono resize-y" />
+          <div className="flex items-center gap-2 text-xs text-gray-500">
+            <span>{wordCount(editText)} слов · {editText.length} символов</span>
+            <div className="flex-1" />
+            <button onClick={onCancelEdit} className="btn-ghost px-3 py-1 text-xs flex items-center gap-1">
+              <X className="w-3 h-3" /> Отмена
+            </button>
+            <button onClick={onSaveEdit} disabled={saving}
+              className="btn-primary px-3 py-1 text-xs flex items-center gap-1">
+              {saving ? <Loader2 className="w-3 h-3 animate-spin" /> : <Save className="w-3 h-3" />}
+              Сохранить
+            </button>
+          </div>
+        </div>
+      ) : (
+        <div className="text-sm whitespace-pre-wrap leading-relaxed">{note.content}</div>
+      )}
+
+      {/* ERROR */}
+      {note.error && (
+        <div className="mt-3 text-xs text-red-400 bg-red-500/5 border border-red-500/20 rounded p-2">
+          Ошибка: {note.error}
+          {note.attempts > 0 && <span className="text-gray-500"> · попыток: {note.attempts}</span>}
+        </div>
+      )}
+
+      {/* REGEN PICKER */}
+      {isRegen && (
+        <div className="mt-3 p-3 border border-accent/30 bg-accent/5 rounded-lg space-y-2">
+          <div className="text-xs text-gray-400">Выбери ведро для перегенерации (или оставь пусто для anti-repeat):</div>
+          <select value={regenBucket} onChange={e => setRegenBucket(e.target.value)}
+            className="input text-sm py-1.5">
+            <option value="">Случайное (anti-repeat)</option>
+            {buckets.map(b => <option key={b.key} value={b.key}>{b.label}</option>)}
+          </select>
+          <div className="flex gap-2">
+            <button onClick={onRegenConfirm} className="btn-primary px-3 py-1 text-xs flex items-center gap-1">
+              <Zap className="w-3 h-3" /> Перегенерировать
+            </button>
+            <button onClick={onRegenCancel} className="btn-ghost px-3 py-1 text-xs">Отмена</button>
+          </div>
+        </div>
+      )}
+
+      {/* ACTIONS */}
+      {!isEditing && !isRegen && (
+        <div className="mt-3 flex flex-wrap items-center gap-2 text-xs">
+          {canApprove && (
+            <button onClick={onApprove} className="btn-primary px-3 py-1 flex items-center gap-1">
+              <Check className="w-3 h-3" /> Одобрить
+            </button>
+          )}
+          {canEdit && (
+            <button onClick={onStartEdit} className="btn-ghost px-3 py-1 flex items-center gap-1">
+              <Edit3 className="w-3 h-3" /> Редактировать
+            </button>
+          )}
+          {canRegen && (
+            <button onClick={onRegenStart} className="btn-ghost px-3 py-1 flex items-center gap-1">
+              <RefreshCw className="w-3 h-3" /> Перегенерировать
+            </button>
+          )}
+          {canSkip && (
+            <button onClick={onSkip} className="btn-ghost px-3 py-1 flex items-center gap-1 text-gray-500 hover:text-red-400">
+              <Trash2 className="w-3 h-3" /> Пропустить
+            </button>
+          )}
+          {note.status === 'published' && note.channel_message_id && (
+            <span className="text-gray-500 flex items-center gap-1">
+              <Send className="w-3 h-3" /> TG msg #{note.channel_message_id}
+            </span>
+          )}
+          <div className="flex-1" />
+          <span className="text-gray-600 font-mono">
+            {note.model || ''}
+            {note.tokens_in ? ` · ${note.tokens_in}→${note.tokens_out} tok` : ''}
+          </span>
+        </div>
+      )}
+    </div>
+  );
+}