diff --git a/package.json b/package.json
index 8b1d1e3..5965a7b 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,8 @@
     "prisma:generate": "prisma generate",
     "prisma:migrate": "prisma migrate deploy",
     "prisma:push": "prisma db push",
-    "seed": "node scripts/seed.js"
+    "seed": "node scripts/seed.js",
+    "seed:demo": "node scripts/seed-demo.js"
   },
   "keywords": [],
   "author": "",
diff --git a/scripts/seed-demo.js b/scripts/seed-demo.js
new file mode 100644
index 0000000..b80bb26
--- /dev/null
+++ b/scripts/seed-demo.js
@@ -0,0 +1,534 @@
+import 'dotenv/config';
+
+import { prisma } from '../src/prisma-client.js';
+
+const MANAGER_EMAIL = 'manager@fregat.local';
+const DEMO_EMAIL_DOMAIN = 'demo.fregat.local';
+const DEMO_ORDER_PREFIX = 'DBG-';
+const DEMO_CLIENT_COUNT = Number.parseInt(process.env.DEMO_CLIENTS ?? '20', 10);
+const DEMO_ORDER_COUNT = Number.parseInt(process.env.DEMO_ORDERS ?? '40', 10);
+
+const FIRST_NAMES = [
+  'Алексей', 'Мария', 'Ирина', 'Дмитрий', 'Светлана',
+  'Павел', 'Ольга', 'Иван', 'Наталья', 'Егор',
+  'Виктория', 'Максим', 'Елена', 'Роман', 'Анна',
+  'Кирилл', 'Юлия', 'Андрей', 'Татьяна', 'Сергей',
+];
+
+const LAST_NAMES = [
+  'Иванов', 'Петрова', 'Смирнова', 'Козлов', 'Васильева',
+  'Федоров', 'Морозова', 'Захаров', 'Орлова', 'Новиков',
+  'Романова', 'Соколов', 'Беляева', 'Громов', 'Крылова',
+  'Титов', 'Борисова', 'Попов', 'Лебедева', 'Макаров',
+];
+
+const CITIES = [
+  'Москва',
+  'Санкт-Петербург',
+  'Казань',
+  'Екатеринбург',
+  'Новосибирск',
+  'Нижний Новгород',
+  'Самара',
+  'Краснодар',
+  'Ростов-на-Дону',
+  'Воронеж',
+];
+
+const STREETS = [
+  'Ленинградский проспект',
+  'Кубинская улица',
+  'улица Родины',
+  'Промышленная улица',
+  'улица Победы',
+  'Складской проезд',
+  'Транспортная улица',
+  'улица Энергетиков',
+  'Рабочая улица',
+  'Индустриальный проспект',
+];
+
+const COMPANY_PREFIXES = [
+  'ТД', 'ПК', 'Логистик', 'Сервис', 'Группа',
+  'Снаб', 'Пром', 'Регион', 'Партнер', 'Трейд',
+];
+
+const COMPANY_SUFFIXES = [
+  'Пласт', 'Пак', 'Транс', 'Маркет', 'Снабжение',
+  'Лайн', 'Система', 'Поставка', 'Ритейл', 'Ресурс',
+];
+
+const ORDER_STATUS_CYCLE = [
+  'NEW',
+  'MANAGER_PROCESSING',
+  'WAITING_DOUBLE_CONFIRM',
+  'CONFIRMED',
+  'IN_PROGRESS',
+  'COMPLETED',
+];
+
+function formatIndex(index) {
+  return String(index).padStart(2, '0');
+}
+
+function buildClientEmail(index) {
+  return `client${formatIndex(index)}@${DEMO_EMAIL_DOMAIN}`;
+}
+
+function buildInn(index) {
+  return `7702${String(index).padStart(6, '0')}`;
+}
+
+function buildOgrn(index) {
+  return `102770${String(index).padStart(7, '0')}`;
+}
+
+function buildBik(index) {
+  return `0445${String(10000 + index).slice(-5)}`;
+}
+
+function buildAccount(prefix, index) {
+  return `${prefix}${String(100000000000000000 + index).slice(-18)}`;
+}
+
+function atMiddayDaysAgo(daysAgo) {
+  const date = new Date();
+  date.setHours(12, 0, 0, 0);
+  date.setDate(date.getDate() - daysAgo);
+  return date;
+}
+
+function addHours(date, hours) {
+  return new Date(date.getTime() + (hours * 60 * 60 * 1000));
+}
+
+function toMoney(value) {
+  return value.toFixed(2);
+}
+
+function createOrderTimeline(status, createdAt) {
+  const steps = [
+    { status: 'NEW', note: '[demo] Заказ создан клиентом.' },
+    { status: 'MANAGER_PROCESSING', note: '[demo] Менеджер взял заказ в работу.' },
+    { status: 'WAITING_DOUBLE_CONFIRM', note: '[demo] Согласование условий и цены.' },
+    { status: 'CONFIRMED', note: '[demo] Стороны подтвердили заказ.' },
+    { status: 'IN_PROGRESS', note: '[demo] Заказ передан в исполнение.' },
+    { status: 'COMPLETED', note: '[demo] Заказ доставлен клиенту.' },
+  ];
+
+  const targetIndex = steps.findIndex((step) => step.status === status);
+  if (targetIndex === -1) {
+    return [steps[0]];
+  }
+
+  return steps.slice(0, targetIndex + 1).map((step, index) => ({
+    ...step,
+    createdAt: addHours(createdAt, index * 6),
+  }));
+}
+
+function orderKindForIndex(index) {
+  return index % 5 === 0 ? 'CALCULATION' : 'READY';
+}
+
+function orderStatusForIndex(index) {
+  return ORDER_STATUS_CYCLE[index % ORDER_STATUS_CYCLE.length];
+}
+
+function companyNameForIndex(index) {
+  const prefix = COMPANY_PREFIXES[index % COMPANY_PREFIXES.length];
+  const suffix = COMPANY_SUFFIXES[index % COMPANY_SUFFIXES.length];
+  return `${prefix} ${suffix} ${formatIndex(index)}`;
+}
+
+function fullNameForIndex(index) {
+  return `${FIRST_NAMES[(index - 1) % FIRST_NAMES.length]} ${LAST_NAMES[(index - 1) % LAST_NAMES.length]}`;
+}
+
+async function upsertClient(index) {
+  const companyName = companyNameForIndex(index);
+  const company = await prisma.company.upsert({
+    where: { inn: buildInn(index) },
+    update: { name: companyName },
+    create: {
+      name: companyName,
+      inn: buildInn(index),
+    },
+  });
+
+  const user = await prisma.user.upsert({
+    where: { email: buildClientEmail(index) },
+    update: {
+      fullName: fullNameForIndex(index),
+      role: 'CLIENT',
+      companyId: company.id,
+    },
+    create: {
+      email: buildClientEmail(index),
+      fullName: fullNameForIndex(index),
+      role: 'CLIENT',
+      companyId: company.id,
+    },
+  });
+
+  await prisma.counterpartyProfile.upsert({
+    where: { userId: user.id },
+    update: {
+      companyName,
+      companyFullName: `${companyName}, общество с ограниченной ответственностью`,
+      inn: buildInn(index),
+      kpp: `7702${String(2000 + index).slice(-4)}`,
+      ogrn: buildOgrn(index),
+      legalAddress: `${CITIES[(index - 1) % CITIES.length]}, ${STREETS[(index - 1) % STREETS.length]}, ${10 + index}`,
+      bankName: 'АО Тест Банк',
+      bik: buildBik(index),
+      correspondentAccount: buildAccount('30101', index),
+      checkingAccount: buildAccount('40702', index),
+      signerFullName: fullNameForIndex(index),
+      signerPosition: 'Генеральный директор',
+      signerBasis: 'Устав',
+    },
+    create: {
+      userId: user.id,
+      companyName,
+      companyFullName: `${companyName}, общество с ограниченной ответственностью`,
+      inn: buildInn(index),
+      kpp: `7702${String(2000 + index).slice(-4)}`,
+      ogrn: buildOgrn(index),
+      legalAddress: `${CITIES[(index - 1) % CITIES.length]}, ${STREETS[(index - 1) % STREETS.length]}, ${10 + index}`,
+      bankName: 'АО Тест Банк',
+      bik: buildBik(index),
+      correspondentAccount: buildAccount('30101', index),
+      checkingAccount: buildAccount('40702', index),
+      signerFullName: fullNameForIndex(index),
+      signerPosition: 'Генеральный директор',
+      signerBasis: 'Устав',
+    },
+  });
+
+  const addressLabel = 'Основной адрес';
+  const addressValue = `${CITIES[(index - 1) % CITIES.length]}, ${STREETS[(index - 1) % STREETS.length]}, ${20 + index}`;
+  const existingAddress = await prisma.deliveryAddress.findFirst({
+    where: {
+      userId: user.id,
+      label: addressLabel,
+    },
+  });
+
+  const address = existingAddress
+    ? await prisma.deliveryAddress.update({
+      where: { id: existingAddress.id },
+      data: {
+        address: addressValue,
+        unrestrictedValue: addressValue,
+      },
+    })
+    : await prisma.deliveryAddress.create({
+      data: {
+        userId: user.id,
+        label: addressLabel,
+        address: addressValue,
+        unrestrictedValue: addressValue,
+      },
+    });
+
+  await prisma.user.update({
+    where: { id: user.id },
+    data: {
+      defaultDeliveryAddressId: address.id,
+    },
+  });
+
+  return { user, address };
+}
+
+async function rebuildMessengerConnections(clients) {
+  await prisma.messengerConnection.deleteMany({
+    where: {
+      userId: {
+        in: clients.map((entry) => entry.user.id),
+      },
+    },
+  });
+
+  for (const [index, client] of clients.entries()) {
+    const demoIndex = index + 1;
+
+    if (demoIndex % 2 === 1) {
+      await prisma.messengerConnection.create({
+        data: {
+          userId: client.user.id,
+          type: 'TELEGRAM',
+          channelId: `70000${demoIndex}`,
+          displayName: client.user.fullName,
+          username: `fregat_demo_${formatIndex(demoIndex)}`,
+        },
+      });
+    }
+
+    if (demoIndex % 3 === 0) {
+      await prisma.messengerConnection.create({
+        data: {
+          userId: client.user.id,
+          type: 'MAX',
+          channelId: `90000${demoIndex}`,
+          displayName: client.user.fullName,
+          username: `max_demo_${formatIndex(demoIndex)}`,
+        },
+      });
+    }
+  }
+}
+
+async function cleanupDemoData(demoUserIds) {
+  const demoOrders = await prisma.order.findMany({
+    where: {
+      OR: [
+        { code: { startsWith: DEMO_ORDER_PREFIX } },
+        { customerId: { in: demoUserIds } },
+      ],
+    },
+    select: { id: true },
+  });
+
+  const demoOrderIds = demoOrders.map((order) => order.id);
+
+  if (demoOrderIds.length) {
+    await prisma.orderStatusEvent.deleteMany({
+      where: { orderId: { in: demoOrderIds } },
+    });
+    await prisma.orderItem.deleteMany({
+      where: { orderId: { in: demoOrderIds } },
+    });
+    await prisma.bonusTransaction.deleteMany({
+      where: { orderId: { in: demoOrderIds } },
+    });
+    await prisma.order.deleteMany({
+      where: { id: { in: demoOrderIds } },
+    });
+  }
+
+  await prisma.rewardWithdrawalRequest.deleteMany({
+    where: { requesterId: { in: demoUserIds } },
+  });
+
+  await prisma.bonusTransaction.deleteMany({
+    where: {
+      userId: { in: demoUserIds },
+      reason: { startsWith: '[demo]' },
+    },
+  });
+
+  await prisma.referralLink.deleteMany({
+    where: {
+      OR: [
+        { referrerId: { in: demoUserIds } },
+        { refereeId: { in: demoUserIds } },
+      ],
+    },
+  });
+}
+
+async function createReferralLinks(managerId, clients) {
+  const links = [];
+
+  for (let index = 0; index < Math.min(10, Math.floor(clients.length / 2)); index += 1) {
+    const referrer = clients[index].user;
+    const referee = clients[index + 10]?.user;
+    if (!referee) {
+      continue;
+    }
+
+    const link = await prisma.referralLink.create({
+      data: {
+        referrerId: referrer.id,
+        refereeId: referee.id,
+        createdById: managerId,
+        bonusPercent: toMoney(5 + (index % 4) * 2.5),
+      },
+    });
+
+    links.push(link);
+  }
+
+  return links;
+}
+
+async function createOrders(managerId, clients, products, referralLinks) {
+  const referralByRefereeId = new Map(referralLinks.map((link) => [link.refereeId, link]));
+  let completedOrders = 0;
+
+  for (let index = 1; index <= DEMO_ORDER_COUNT; index += 1) {
+    const client = clients[(index - 1) % clients.length];
+    const createdAt = atMiddayDaysAgo(DEMO_ORDER_COUNT - index + 1);
+    const status = orderStatusForIndex(index - 1);
+    const kind = orderKindForIndex(index);
+    const itemCount = 1 + (index % 3);
+    const orderProducts = Array.from({ length: itemCount }, (_, itemIndex) => (
+      products[(index + itemIndex * 3) % products.length]
+    ));
+
+    const preparedItems = orderProducts.map((product, itemIndex) => {
+      const quantity = 5 + ((index + itemIndex * 2) % 18);
+      const unitPrice = 72 + ((index * 11 + itemIndex * 7) % 65);
+      return {
+        product,
+        quantity,
+        unitPrice,
+        lineTotal: quantity * unitPrice,
+      };
+    });
+
+    const totalPrice = preparedItems.reduce((sum, item) => sum + item.lineTotal, 0);
+    const deliveryFee = 1200 + (index % 5) * 350;
+
+    const order = await prisma.order.create({
+      data: {
+        code: `${DEMO_ORDER_PREFIX}${String(3000 + index)}`,
+        kind,
+        customerId: client.user.id,
+        managerId,
+        deliveryAddressId: client.address.id,
+        deliveryAddress: client.address.address,
+        deliveryTerms: index % 4 === 0
+          ? 'Доставка до адреса клиента'
+          : 'Самовывоз со склада после подтверждения',
+        deliveryFee: toMoney(deliveryFee),
+        totalPrice: toMoney(totalPrice + deliveryFee),
+        status,
+        clientApproved: ['CONFIRMED', 'IN_PROGRESS', 'COMPLETED'].includes(status) ? true : null,
+        managerApproved: ['WAITING_DOUBLE_CONFIRM', 'CONFIRMED', 'IN_PROGRESS', 'COMPLETED'].includes(status) ? true : null,
+        calculationPayload: kind === 'CALCULATION'
+          ? {
+            note: 'Демо-расчет для интерфейсов менеджера.',
+            requestedAt: createdAt.toISOString(),
+          }
+          : null,
+        createdAt,
+        updatedAt: addHours(createdAt, 12),
+      },
+    });
+
+    for (const item of preparedItems) {
+      await prisma.orderItem.create({
+        data: {
+          orderId: order.id,
+          productId: item.product.id,
+          productName: item.product.name,
+          quantity: item.quantity.toFixed(3),
+          unitPrice: toMoney(item.unitPrice),
+          createdAt,
+        },
+      });
+    }
+
+    const timeline = createOrderTimeline(status, createdAt);
+    for (const event of timeline) {
+      await prisma.orderStatusEvent.create({
+        data: {
+          orderId: order.id,
+          status: event.status,
+          actorUserId: managerId,
+          note: event.note,
+          createdAt: event.createdAt,
+        },
+      });
+    }
+
+    if (status === 'COMPLETED') {
+      completedOrders += 1;
+      const referralLink = referralByRefereeId.get(client.user.id);
+      if (referralLink) {
+        const bonusAmount = Number((Number(totalPrice + deliveryFee) * Number(referralLink.bonusPercent) / 100).toFixed(2));
+        await prisma.bonusTransaction.create({
+          data: {
+            userId: referralLink.referrerId,
+            amount: toMoney(bonusAmount),
+            reason: `[demo] Бонус за заказ ${order.code}`,
+            orderId: order.id,
+            referralLinkId: referralLink.id,
+            createdAt: addHours(createdAt, 18),
+          },
+        });
+      }
+    }
+  }
+
+  return completedOrders;
+}
+
+async function createWithdrawalDrafts(clients) {
+  const candidates = clients.slice(0, 3);
+
+  for (const [index, client] of candidates.entries()) {
+    await prisma.rewardWithdrawalRequest.create({
+      data: {
+        requesterId: client.user.id,
+        amount: toMoney(1500 + index * 750),
+        status: 'PENDING',
+        reviewComment: '[demo] Тестовая заявка на вывод.',
+      },
+    });
+  }
+}
+
+async function main() {
+  if (!Number.isFinite(DEMO_CLIENT_COUNT) || DEMO_CLIENT_COUNT < 2) {
+    throw new Error('DEMO_CLIENTS must be at least 2.');
+  }
+
+  if (!Number.isFinite(DEMO_ORDER_COUNT) || DEMO_ORDER_COUNT < 1) {
+    throw new Error('DEMO_ORDERS must be at least 1.');
+  }
+
+  const manager = await prisma.user.findUnique({
+    where: { email: MANAGER_EMAIL },
+  });
+
+  if (!manager) {
+    throw new Error(`Manager ${MANAGER_EMAIL} not found. Run npm run seed first.`);
+  }
+
+  const products = await prisma.product.findMany({
+    where: { isActive: true },
+    orderBy: { sku: 'asc' },
+    take: 24,
+  });
+
+  if (products.length < 6) {
+    throw new Error('Not enough active products. Run npm run seed first.');
+  }
+
+  const clients = [];
+  for (let index = 1; index <= DEMO_CLIENT_COUNT; index += 1) {
+    clients.push(await upsertClient(index));
+  }
+
+  const demoUserIds = clients.map((entry) => entry.user.id);
+  await cleanupDemoData(demoUserIds);
+  await rebuildMessengerConnections(clients);
+
+  const referralLinks = await createReferralLinks(manager.id, clients);
+  const completedOrders = await createOrders(manager.id, clients, products, referralLinks);
+  await createWithdrawalDrafts(clients);
+
+  const [usersCount, ordersCount] = await Promise.all([
+    prisma.user.count({
+      where: {
+        email: { endsWith: `@${DEMO_EMAIL_DOMAIN}` },
+      },
+    }),
+    prisma.order.count({
+      where: {
+        code: { startsWith: DEMO_ORDER_PREFIX },
+      },
+    }),
+  ]);
+
+  console.log(`Demo seed complete: ${usersCount} demo clients, ${ordersCount} demo orders, ${referralLinks.length} referral links, ${completedOrders} completed orders.`);
+}
+
+await main()
+  .finally(async () => {
+    await prisma.$disconnect();
+  });