diff --git a/README.md b/README.md
index 3921636..2fb6c0d 100644
--- a/README.md
+++ b/README.md
@@ -34,8 +34,9 @@ nano frontend/.env
 
 4. Выполните миграции изнутри контейнера backend:
 ```
-docker exec dapp-backend yarn migrate
-```
+  docker exec -e NODE_ENV=migration dapp-backend yarn migrate
+  
+  ```
 
 Скрипт автоматически:
 - Проверит наличие Docker и Docker Compose
diff --git a/backend/app.js b/backend/app.js
index b670ff8..ebae5af 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -2,12 +2,12 @@ const express = require('express');
 const helmet = require('helmet');
 const cors = require('cors');
 const session = require('express-session');
-const { sessionMiddleware } = require('./config/session');
+const sessionConfig = require('./config/session');
 const logger = require('./utils/logger');
 // const csurf = require('csurf'); // Закомментировано, так как не используется
-const { errorHandler } = require('./middleware/errorHandler');
+const errorHandler = require('./middleware/errorHandler');
 // const { version } = require('./package.json'); // Закомментировано, так как не используется
-const pool = require('./db'); // Добавляем импорт pool
+const db = require('./db'); // Добавляем импорт db
 const aiAssistant = require('./services/ai-assistant'); // Добавляем импорт aiAssistant
 const fs = require('fs');
 const path = require('path');
@@ -48,6 +48,9 @@ const ensureDirectoriesExist = () => {
 // Вызываем функцию проверки директорий при запуске сервера
 ensureDirectoriesExist();
 
+// Регистрируем коллбек для пересоздания session middleware при смене пула
+db.setPoolChangeCallback(sessionConfig.reloadSessionMiddleware);
+
 // Импорт маршрутов
 const authRoutes = require('./routes/auth');
 const usersRoutes = require('./routes/users');
@@ -79,8 +82,8 @@ app.use(
   })
 );
 
-// Настройка сессии (ИСПОЛЬЗУЕМ ИМПОРТИРОВАННОЕ MIDDLEWARE)
-app.use(sessionMiddleware);
+// Настройка сессии (используем геттер, чтобы всегда был актуальный middleware)
+app.use((req, res, next) => sessionConfig.sessionMiddleware(req, res, next));
 
 // Добавим middleware для проверки сессии
 app.use(async (req, res, next) => {
@@ -89,7 +92,7 @@ app.use(async (req, res, next) => {
 
   // Проверяем сессию в базе данных
   if (req.sessionID) {
-    const result = await pool.query('SELECT sess FROM session WHERE sid = $1', [req.sessionID]);
+    const result = await db.getQuery()('SELECT sess FROM session WHERE sid = $1', [req.sessionID]);
     console.log('Session from DB:', result.rows[0]?.sess);
   }
 
@@ -104,7 +107,7 @@ app.use(async (req, res, next) => {
     const token = authHeader.split(' ')[1];
     try {
       // Находим пользователя по токену
-      const { rows } = await pool.query(
+      const { rows } = await db.getQuery(
         `
         SELECT u.id, 
         (u.role = 'admin') as is_admin,
@@ -152,7 +155,7 @@ app.use((req, res, next) => {
 // Маршруты API
 app.use('/api/auth', authRoutes);
 app.use('/api/users', usersRoutes);
-app.use('/api/identities', identitiesRoutes);
+app.use('/api', identitiesRoutes);
 app.use('/api/chat', chatRoutes);
 app.use('/api/admin', adminRoutes);
 app.use('/api/tokens', tokensRouter);
@@ -181,6 +184,8 @@ console.log('OPENAI_API_KEY:', redactedValue);
 console.log('EMAIL_USER:', process.env.EMAIL_USER);
 console.log('EMAIL_PASSWORD:', redactedValue);
 
+console.log('typeof errorHandler:', typeof errorHandler, errorHandler.name);
+
 // Добавляем обработчик ошибок последним
 app.use(errorHandler);
 
@@ -188,7 +193,7 @@ app.use(errorHandler);
 app.get('/api/health', async (req, res) => {
   try {
     // Проверяем подключение к БД
-    await pool.query('SELECT NOW()');
+    await db.getQuery('SELECT NOW()');
 
     // Проверяем AI сервис
     const aiStatus = await aiAssistant.checkHealth();
@@ -212,7 +217,7 @@ app.get('/api/health', async (req, res) => {
 setInterval(
   async () => {
     try {
-      await pool.query('DELETE FROM session WHERE expire < NOW()');
+      await db.getQuery('DELETE FROM session WHERE expire < NOW()');
     } catch (error) {
       console.error('Error cleaning old sessions:', error);
     }
diff --git a/backend/config/session.js b/backend/config/session.js
index aa9929b..92719a1 100644
--- a/backend/config/session.js
+++ b/backend/config/session.js
@@ -1,25 +1,46 @@
 const session = require('express-session');
 const pgSession = require('connect-pg-simple')(session);
-const { pool } = require('../db');
+const db = require('../db');
 
-const sessionConfig = {
-  store: new pgSession({
-    pool,
-    tableName: 'session',
-  }),
-  secret: process.env.SESSION_SECRET || 'hb3atoken',
-  name: 'sessionId',
-  resave: false,
-  saveUninitialized: true,
-  cookie: {
-    maxAge: 30 * 24 * 60 * 60 * 1000,
-    httpOnly: true,
-    secure: process.env.NODE_ENV === 'production',
-    sameSite: 'lax',
-    path: '/',
-  },
-};
+let onPoolChangeCallback = null;
+
+function setPoolChangeCallback(cb) {
+  onPoolChangeCallback = cb;
+}
+
+let sessionMiddleware = createSessionMiddleware();
+
+function createSessionMiddleware() {
+  return session({
+    store: new pgSession({
+      pool: db.getPool(),
+      tableName: 'session',
+    }),
+    secret: process.env.SESSION_SECRET || 'hb3atoken',
+    name: 'sessionId',
+    resave: false,
+    saveUninitialized: true,
+    cookie: {
+      maxAge: 30 * 24 * 60 * 60 * 1000,
+      httpOnly: true,
+      secure: process.env.NODE_ENV === 'production',
+      sameSite: 'lax',
+      path: '/',
+    },
+  });
+}
+
+function reloadSessionMiddleware() {
+  sessionMiddleware = createSessionMiddleware();
+  if (onPoolChangeCallback) {
+    onPoolChangeCallback();
+  }
+}
 
 module.exports = {
-  sessionMiddleware: session(sessionConfig),
+  get sessionMiddleware() {
+    return sessionMiddleware;
+  },
+  reloadSessionMiddleware,
+  setPoolChangeCallback,
 };
diff --git a/backend/db.js b/backend/db.js
index ae6c5e2..5f306c1 100644
--- a/backend/db.js
+++ b/backend/db.js
@@ -9,10 +9,14 @@ console.log('DB_PORT:', process.env.DB_PORT);
 console.log('DB_NAME:', process.env.DB_NAME);
 console.log('DB_USER:', process.env.DB_USER);
 
-// Создаем пул соединений с базой данных
-const pool = new Pool({
-  connectionString: process.env.DATABASE_URL,
-  ssl: process.env.NODE_ENV === 'production' ? { rejectUnauthorized: false } : false,
+// Первичное подключение по дефолтным значениям
+let pool = new Pool({
+  host: process.env.DB_HOST || 'postgres',
+  port: parseInt(process.env.DB_PORT || '5432'),
+  database: process.env.DB_NAME || 'dapp_db',
+  user: process.env.DB_USER || 'dapp_user',
+  password: process.env.DB_PASSWORD,
+  ssl: false,
 });
 
 // Проверяем подключение к базе данных
@@ -21,36 +25,59 @@ pool.query('SELECT NOW()')
     console.log('Успешное подключение к базе данных:', res.rows[0]);
   })
   .catch(err => {
-    console.error('Failed to connect to the database using DATABASE_URL:', err);
-    console.log('Attempting alternative database connection...');
-
-    // Пробуем альтернативное подключение
-    const altPool = new Pool({
-      host: process.env.DB_HOST || 'localhost',
-      port: parseInt(process.env.DB_PORT || '5432'),
-      database: process.env.DB_NAME || 'dapp_db',
-      user: process.env.DB_USER || 'dapp_user',
-      password: process.env.DB_PASSWORD,
-    });
-
-    altPool.query('SELECT NOW()')
-      .then(altRes => {
-        console.log('Альтернативное подключение успешно:', altRes.rows[0]);
-        // Заменяем основной пул на альтернативный
-        module.exports.pool = altPool;
-        module.exports.query = (text, params) => altPool.query(text, params);
-      })
-      .catch(altErr => {
-        console.error('Альтернативное подключение тоже не удалось:', altErr);
-        console.log('Переключение на временное хранилище данных в памяти...');
-        module.exports = createInMemoryStorage();
-      });
+    console.error('Ошибка подключения к базе данных:', err);
   });
 
-// Функция для выполнения SQL-запросов
-const query = (text, params) => {
-  return pool.query(text, params);
-};
+console.log('Пул создан:', pool.options || pool);
+
+function getPool() {
+  return pool;
+}
+
+function getQuery() {
+  return pool.query.bind(pool);
+}
+
+let poolChangeCallback = null;
+
+function setPoolChangeCallback(cb) {
+  poolChangeCallback = cb;
+}
+
+// Функция для пересоздания пула из db_settings
+async function reinitPoolFromDbSettings() {
+  try {
+    const res = await pool.query('SELECT * FROM db_settings ORDER BY id LIMIT 1');
+    if (!res.rows.length) throw new Error('DB settings not found');
+    const settings = res.rows[0];
+    // Закрываем старый пул
+    await pool.end();
+    // Создаём новый пул
+    pool = new Pool({
+      host: settings.db_host,
+      port: parseInt(settings.db_port),
+      database: settings.db_name,
+      user: settings.db_user,
+      password: settings.db_password,
+      ssl: false,
+    });
+    // Пересоздаём session middleware
+    if (poolChangeCallback) {
+      poolChangeCallback();
+    }
+    console.log('Пул пересоздан с новыми параметрами:', settings);
+  } catch (err) {
+    console.error('Ошибка пересоздания пула:', err);
+    throw err;
+  }
+}
+
+// При старте приложения — сразу пробуем инициализировать из db_settings
+if (process.env.NODE_ENV !== 'migration') {
+  reinitPoolFromDbSettings();
+}
+
+const query = (text, params) => pool.query(text, params);
 
 // Функция для сохранения гостевого сообщения в базе данных
 async function saveGuestMessageToDatabase(message, language, guestId) {
@@ -71,70 +98,9 @@ async function saveGuestMessageToDatabase(message, language, guestId) {
 
 // Экспортируем функции для работы с базой данных
 module.exports = {
-  query,
-  pool,
+  getPool,
+  getQuery,
+  reinitPoolFromDbSettings,
   saveGuestMessageToDatabase,
+  setPoolChangeCallback,
 };
-
-// Функция для создания временного хранилища данных в памяти
-function createInMemoryStorage() {
-  console.log('Используется временное хранилище данных в памяти');
-
-  const users = [];
-  let userId = 1;
-
-  // Эмуляция функции query для работы с пользователями
-  const inMemoryQuery = async (text, params) => {
-    console.log('SQL query (in-memory):', text, 'Params:', params);
-
-    // Эмуляция запроса SELECT * FROM users WHERE address = $1
-    if (text.includes('SELECT * FROM users WHERE address = $1')) {
-      const address = params[0];
-      const user = users.find((u) => u.address === address);
-      return { rows: user ? [user] : [] };
-    }
-
-    // Эмуляция запроса SELECT * FROM users WHERE email = $1
-    if (text.includes('SELECT * FROM users WHERE email = $1')) {
-      const email = params[0];
-      const user = users.find((u) => u.email === email);
-      return { rows: user ? [user] : [] };
-    }
-
-    // Эмуляция запроса INSERT INTO users
-    if (text.includes('INSERT INTO users')) {
-      let newUser;
-
-      if (text.includes('address')) {
-        newUser = { id: userId++, address: params[0], created_at: new Date(), is_admin: false };
-      } else if (text.includes('email')) {
-        newUser = { id: userId++, email: params[0], created_at: new Date(), is_admin: false };
-      }
-
-      if (newUser) {
-        users.push(newUser);
-        return { rows: [newUser] };
-      }
-    }
-
-    return { rows: [] };
-  };
-
-  return {
-    query: inMemoryQuery,
-    pool: {
-      query: (text, params, callback) => {
-        if (callback) {
-          try {
-            const result = inMemoryQuery(text, params);
-            callback(null, result);
-          } catch (err) {
-            callback(err);
-          }
-        } else {
-          return inMemoryQuery(text, params);
-        }
-      },
-    },
-  };
-}
diff --git a/backend/db/index.js b/backend/db/index.js
deleted file mode 100644
index eff32a0..0000000
--- a/backend/db/index.js
+++ /dev/null
@@ -1,21 +0,0 @@
-const { Pool } = require('pg');
-const logger = require('../utils/logger');
-
-const pool = new Pool({
-  user: process.env.DB_USER || 'dapp_user',
-  host: process.env.DB_HOST || 'localhost',
-  database: process.env.DB_NAME || 'dapp_db',
-  password: process.env.DB_PASSWORD,
-  port: process.env.DB_PORT || 5432,
-});
-
-// Проверка подключения
-pool.query('SELECT NOW()', (err, res) => {
-  if (err) {
-    logger.error('Error connecting to database:', err);
-  } else {
-    logger.info('Успешное подключение к базе данных:', res.rows[0]);
-  }
-});
-
-module.exports = { pool };
diff --git a/backend/db/migrations/020_create_email_settings.sql b/backend/db/migrations/020_create_email_settings.sql
new file mode 100644
index 0000000..3cfadcb
--- /dev/null
+++ b/backend/db/migrations/020_create_email_settings.sql
@@ -0,0 +1,17 @@
+CREATE TABLE IF NOT EXISTS email_settings (
+    id SERIAL PRIMARY KEY,
+    smtp_host VARCHAR(255) NOT NULL,
+    smtp_port INTEGER NOT NULL,
+    smtp_user VARCHAR(255) NOT NULL,
+    smtp_password VARCHAR(255) NOT NULL,
+    imap_host VARCHAR(255),
+    imap_port INTEGER,
+    from_email VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+-- Для простоты предполагаем, что настройки всегда одни (id=1)
+INSERT INTO email_settings (smtp_host, smtp_port, smtp_user, smtp_password, imap_host, imap_port, from_email)
+VALUES ('smtp.example.com', 465, 'user@example.com', 'password', 'imap.example.com', 993, 'noreply@example.com')
+ON CONFLICT DO NOTHING; 
\ No newline at end of file
diff --git a/backend/db/migrations/021_create_telegram_settings.sql b/backend/db/migrations/021_create_telegram_settings.sql
new file mode 100644
index 0000000..ad43212
--- /dev/null
+++ b/backend/db/migrations/021_create_telegram_settings.sql
@@ -0,0 +1,12 @@
+CREATE TABLE IF NOT EXISTS telegram_settings (
+    id SERIAL PRIMARY KEY,
+    bot_token VARCHAR(255) NOT NULL,
+    bot_username VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+-- Для простоты предполагаем, что настройки всегда одни (id=1)
+INSERT INTO telegram_settings (bot_token, bot_username)
+VALUES ('your-telegram-bot-token', 'your_bot_username')
+ON CONFLICT DO NOTHING; 
\ No newline at end of file
diff --git a/backend/db/migrations/022_create_db_settings.sql b/backend/db/migrations/022_create_db_settings.sql
new file mode 100644
index 0000000..3a3016f
--- /dev/null
+++ b/backend/db/migrations/022_create_db_settings.sql
@@ -0,0 +1,15 @@
+CREATE TABLE IF NOT EXISTS db_settings (
+    id SERIAL PRIMARY KEY,
+    db_host VARCHAR(255) NOT NULL,
+    db_port INTEGER NOT NULL,
+    db_name VARCHAR(255) NOT NULL,
+    db_user VARCHAR(255) NOT NULL,
+    db_password VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+-- Для простоты предполагаем, что настройки всегда одни (id=1)
+INSERT INTO db_settings (db_host, db_port, db_name, db_user, db_password)
+VALUES ('localhost', 5432, 'dapp_db', 'dapp_user', 'dapp_password')
+ON CONFLICT DO NOTHING; 
\ No newline at end of file
diff --git a/backend/db/migrations/023_create_ai_providers_settings.sql b/backend/db/migrations/023_create_ai_providers_settings.sql
new file mode 100644
index 0000000..4163f33
--- /dev/null
+++ b/backend/db/migrations/023_create_ai_providers_settings.sql
@@ -0,0 +1,14 @@
+CREATE TABLE IF NOT EXISTS ai_providers_settings (
+    id SERIAL PRIMARY KEY,
+    provider VARCHAR(32) NOT NULL UNIQUE, -- openai, anthropic, google, ollama
+    api_key VARCHAR(255),
+    base_url VARCHAR(255),
+    selected_model VARCHAR(128),
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+-- Пример заполнения для Ollama (без ключа)
+INSERT INTO ai_providers_settings (provider, base_url, selected_model)
+VALUES ('ollama', 'http://localhost:11434', 'qwen2.5')
+ON CONFLICT (provider) DO NOTHING; 
\ No newline at end of file
diff --git a/backend/middleware/errorHandler.js b/backend/middleware/errorHandler.js
index 813c2db..0644c5d 100644
--- a/backend/middleware/errorHandler.js
+++ b/backend/middleware/errorHandler.js
@@ -7,6 +7,11 @@ const { ERROR_CODES } = require('../utils/constants');
  */
 // eslint-disable-next-line no-unused-vars
 const errorHandler = (err, req, res, /* next */) => {
+  console.error('errorHandler: err =', err);
+  console.error('errorHandler: typeof err =', typeof err);
+  console.error('errorHandler: stack =', err && err.stack);
+  console.log('errorHandler called, typeof res:', typeof res, 'res:', res);
+  console.log('typeof res:', typeof res, 'isFunction:', typeof res === 'function');
   // Логируем ошибку
   logger.error(`Error: ${err.message}`, {
     stack: err.stack,
@@ -65,7 +70,6 @@ function createError(message, status) {
   return error;
 }
 
-module.exports = {
-  errorHandler,
-  createError,
-};
+module.exports = errorHandler;
+// Если нужен createError для других файлов:
+// module.exports.createError = createError;
diff --git a/backend/package.json b/backend/package.json
index bba6db8..e368c1c 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -23,6 +23,8 @@
     "fix-duplicates": "node scripts/fix-duplicate-identities.js"
   },
   "dependencies": {
+    "@anthropic-ai/sdk": "^0.51.0",
+    "@google/genai": "^1.0.1",
     "@langchain/community": "^0.3.34",
     "@langchain/core": "0.3.0",
     "@langchain/ollama": "^0.2.0",
@@ -47,6 +49,7 @@
     "node-cron": "^3.0.3",
     "node-telegram-bot-api": "^0.66.0",
     "nodemailer": "^6.10.0",
+    "openai": "^4.102.0",
     "pg": "^8.10.0",
     "semver": "^7.7.1",
     "session-file-store": "^1.5.0",
diff --git a/backend/routes/admin.js b/backend/routes/admin.js
index 02fa185..f21c0c1 100644
--- a/backend/routes/admin.js
+++ b/backend/routes/admin.js
@@ -6,49 +6,49 @@ const authService = require('../services/auth-service');
 const logger = require('../utils/logger');
 
 // Роли
-router.get('/roles', requireAdmin, async (req, res) => {
+router.get('/roles', requireAdmin, async (req, res, next) => {
   try {
     const roles = await authService.getAllRoles();
     res.json({ success: true, roles });
   } catch (error) {
     logger.error('Error getting roles:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
-router.post('/roles', requireAdmin, async (req, res) => {
+router.post('/roles', requireAdmin, async (req, res, next) => {
   try {
     const { name, permissions } = req.body;
     const role = await authService.createRole(name, permissions);
     res.json({ success: true, role });
   } catch (error) {
     logger.error('Error creating role:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
 // Админ функции
-router.get('/users', requireAdmin, async (req, res) => {
+router.get('/users', requireAdmin, async (req, res, next) => {
   try {
     const users = await authService.getAllUsers();
     res.json({ success: true, users });
   } catch (error) {
     logger.error('Error getting users:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
 // Маршрут для получения статистики (защищен middleware requireAdmin)
-router.get('/stats', requireAdmin, async (req, res) => {
+router.get('/stats', requireAdmin, async (req, res, next) => {
   try {
     // Получаем количество пользователей
-    const usersCount = await db.query('SELECT COUNT(*) FROM users');
+    const usersCount = await db.getQuery()('SELECT COUNT(*) FROM users');
 
     // Получаем количество досок
-    const boardsCount = await db.query('SELECT COUNT(*) FROM kanban_boards');
+    const boardsCount = await db.getQuery()('SELECT COUNT(*) FROM kanban_boards');
 
     // Получаем количество задач
-    const tasksCount = await db.query('SELECT COUNT(*) FROM kanban_tasks');
+    const tasksCount = await db.getQuery()('SELECT COUNT(*) FROM kanban_tasks');
 
     res.json({
       userCount: parseInt(usersCount.rows[0].count),
@@ -57,18 +57,18 @@ router.get('/stats', requireAdmin, async (req, res) => {
     });
   } catch (error) {
     console.error('Ошибка при получении статистики:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
 // Маршрут для получения логов
-router.get('/logs', requireAdmin, async (req, res) => {
+router.get('/logs', requireAdmin, async (req, res, next) => {
   try {
-    const result = await db.query('SELECT * FROM logs ORDER BY created_at DESC LIMIT 100');
+    const result = await db.getQuery()('SELECT * FROM logs ORDER BY created_at DESC LIMIT 100');
     res.json(result.rows);
   } catch (error) {
     console.error('Ошибка при получении логов:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
diff --git a/backend/routes/auth.js b/backend/routes/auth.js
index ea1a21a..6d6ae04 100644
--- a/backend/routes/auth.js
+++ b/backend/routes/auth.js
@@ -34,7 +34,7 @@ router.get('/nonce', async (req, res) => {
     const nonce = crypto.randomBytes(16).toString('hex');
 
     // Проверяем, существует ли уже nonce для этого адреса
-    const existingNonce = await db.query('SELECT id FROM nonces WHERE identity_value = $1', [
+    const existingNonce = await db.getQuery()('SELECT id FROM nonces WHERE identity_value = $1', [
       address.toLowerCase(),
     ]);
 
diff --git a/backend/routes/chat.js b/backend/routes/chat.js
index cdb7258..b854168 100644
--- a/backend/routes/chat.js
+++ b/backend/routes/chat.js
@@ -17,7 +17,7 @@ async function processGuestMessages(userId, guestId) {
     logger.info(`Processing guest messages for user ${userId} with guest ID ${guestId}`);
 
     // Проверяем, обрабатывались ли уже эти сообщения
-    const mappingCheck = await db.query(
+    const mappingCheck = await db.getQuery()(
       'SELECT processed FROM guest_user_mapping WHERE guest_id = $1',
       [guestId]
     );
@@ -30,7 +30,7 @@ async function processGuestMessages(userId, guestId) {
 
     // Проверяем наличие mapping записи и создаем если нет
     if (mappingCheck.rows.length === 0) {
-      await db.query(
+      await db.getQuery()(
         'INSERT INTO guest_user_mapping (user_id, guest_id) VALUES ($1, $2) ON CONFLICT (guest_id) DO UPDATE SET user_id = $1',
         [userId, guestId]
       );
@@ -38,7 +38,7 @@ async function processGuestMessages(userId, guestId) {
     }
 
     // Получаем все гостевые сообщения со всеми новыми полями
-    const guestMessagesResult = await db.query(
+    const guestMessagesResult = await db.getQuery()(
       `SELECT
          id, guest_id, content, language, is_ai, created_at,
          attachment_filename, attachment_mimetype, attachment_size, attachment_data
@@ -48,9 +48,9 @@ async function processGuestMessages(userId, guestId) {
 
     if (guestMessagesResult.rows.length === 0) {
       logger.info(`No guest messages found for guest ID ${guestId}`);
-      const checkResult = await db.query('SELECT 1 FROM guest_user_mapping WHERE guest_id = $1', [guestId]);
+      const checkResult = await db.getQuery()('SELECT 1 FROM guest_user_mapping WHERE guest_id = $1', [guestId]);
       if (checkResult.rows.length > 0) {
-        await db.query('UPDATE guest_user_mapping SET processed = true WHERE guest_id = $1', [guestId]);
+        await db.getQuery()('UPDATE guest_user_mapping SET processed = true WHERE guest_id = $1', [guestId]);
         logger.info(`Marked guest mapping as processed (no messages found) for guest ID ${guestId}`);
       } else {
         logger.warn(`Attempted to mark non-existent guest mapping as processed for guest ID ${guestId}`);
@@ -67,7 +67,7 @@ async function processGuestMessages(userId, guestId) {
       ? (firstMessage.content.length > 30 ? `${firstMessage.content.substring(0, 30)}...` : firstMessage.content)
       : (firstMessage.attachment_filename ? `Файл: ${firstMessage.attachment_filename}` : 'Новый диалог');
 
-    const newConversationResult = await db.query(
+    const newConversationResult = await db.getQuery()(
       'INSERT INTO conversations (user_id, title) VALUES ($1, $2) RETURNING *',
       [userId, title]
     );
@@ -84,7 +84,7 @@ async function processGuestMessages(userId, guestId) {
 
       try {
         // Сохраняем сообщение пользователя в таблицу messages, включая данные файла
-        const userMessageResult = await db.query(
+        const userMessageResult = await db.getQuery()(
           `INSERT INTO messages
             (conversation_id, content, sender_type, role, channel, created_at, user_id,
              attachment_filename, attachment_mimetype, attachment_size, attachment_data)
@@ -118,7 +118,7 @@ async function processGuestMessages(userId, guestId) {
 
           if (aiResponseContent) {
               // Сохраняем ответ от ИИ (у него нет вложений)
-              const aiMessageResult = await db.query(
+              const aiMessageResult = await db.getQuery()(
                 `INSERT INTO messages
                   (conversation_id, content, sender_type, role, channel, created_at, user_id)
                  VALUES
@@ -144,20 +144,20 @@ async function processGuestMessages(userId, guestId) {
 
     // Удаляем только успешно обработанные гостевые сообщения
     if (savedMessageIds.length > 0) {
-      await db.query('DELETE FROM guest_messages WHERE id = ANY($1::int[])', [savedMessageIds]);
+      await db.getQuery()('DELETE FROM guest_messages WHERE id = ANY($1::int[])', [savedMessageIds]);
       logger.info(
         `Deleted ${savedMessageIds.length} processed guest messages for guest ID ${guestId}`
       );
 
       // Помечаем гостевой ID как обработанный
-      await db.query('UPDATE guest_user_mapping SET processed = true WHERE guest_id = $1', [
+      await db.getQuery()('UPDATE guest_user_mapping SET processed = true WHERE guest_id = $1', [
         guestId,
       ]);
       logger.info(`Marked guest mapping as processed for guest ID ${guestId}`);
     } else {
       logger.warn(`No guest messages were successfully processed, skipping deletion for guest ID ${guestId}`);
       // Если не было успешных, все равно пометим как обработанные, чтобы не пытаться снова
-      await db.query('UPDATE guest_user_mapping SET processed = true WHERE guest_id = $1', [guestId]);
+      await db.getQuery()('UPDATE guest_user_mapping SET processed = true WHERE guest_id = $1', [guestId]);
       logger.info(`Marked guest mapping as processed (no successful messages) for guest ID ${guestId}`);
     }
 
@@ -221,7 +221,7 @@ router.post('/guest-message', upload.array('attachments'), async (req, res) => {
     });
 
     // Сохраняем сообщение пользователя с текстом или файлом
-    const result = await db.query(
+    const result = await db.getQuery()(
       `INSERT INTO guest_messages
         (guest_id, content, language, is_ai,
          attachment_filename, attachment_mimetype, attachment_size, attachment_data)
@@ -293,7 +293,7 @@ router.post('/message', requireAuth, upload.array('attachments'), async (req, re
   try {
     // Найти или создать диалог
     if (conversationId) {
-      const convResult = await db.query(
+      const convResult = await db.getQuery()(
         'SELECT * FROM conversations WHERE id = $1 AND user_id = $2',
         [conversationId, userId]
       );
@@ -308,7 +308,7 @@ router.post('/message', requireAuth, upload.array('attachments'), async (req, re
         ? (message.length > 50 ? `${message.substring(0, 50)}...` : message)
         : (file ? `Файл: ${file.originalname}` : 'Новый диалог');
 
-      const newConvResult = await db.query(
+      const newConvResult = await db.getQuery()(
         'INSERT INTO conversations (user_id, title) VALUES ($1, $2) RETURNING *',
         [userId, title]
       );
@@ -325,7 +325,7 @@ router.post('/message', requireAuth, upload.array('attachments'), async (req, re
     const attachmentData = file ? file.buffer : null;
 
     // Сохраняем сообщение пользователя
-    const userMessageResult = await db.query(
+    const userMessageResult = await db.getQuery()(
       `INSERT INTO messages
          (conversation_id, user_id, content, sender_type, role, channel,
           attachment_filename, attachment_mimetype, attachment_size, attachment_data)
@@ -354,7 +354,7 @@ router.post('/message', requireAuth, upload.array('attachments'), async (req, re
         logger.info('AI response received' + (aiResponseContent ? '' : ' (empty)'), { conversationId });
 
         if (aiResponseContent) {
-          const aiMessageResult = await db.query(
+          const aiMessageResult = await db.getQuery()(
             `INSERT INTO messages
                (conversation_id, user_id, content, sender_type, role, channel)
              VALUES ($1, $2, $3, 'assistant', 'assistant', 'web')
@@ -443,7 +443,7 @@ router.get('/history', requireAuth, async (req, res) => {
         countQuery += ' AND conversation_id = $2';
         countParams.push(conversationId);
       }
-      const countResult = await db.query(countQuery, countParams);
+      const countResult = await db.getQuery()(countQuery, countParams);
       const totalCount = parseInt(countResult.rows[0].count, 10);
       return res.json({ success: true, count: totalCount });
     }
@@ -481,7 +481,7 @@ router.get('/history', requireAuth, async (req, res) => {
 
     logger.debug('Executing history query:', { query, params });
 
-    const result = await db.query(query, params);
+    const result = await db.getQuery()(query, params);
 
     // Обрабатываем результаты для фронтенда
     const messages = result.rows.map(msg => {
@@ -522,7 +522,7 @@ router.get('/history', requireAuth, async (req, res) => {
       totalCountQuery += ' AND conversation_id = $2';
       totalCountParams.push(conversationId);
     }
-    const totalCountResult = await db.query(totalCountQuery, totalCountParams);
+    const totalCountResult = await db.getQuery()(totalCountQuery, totalCountParams);
     const totalMessages = parseInt(totalCountResult.rows[0].count, 10);
 
     logger.info(`Returning message history for user ${userId}`, { count: messages.length, offset, limit, total: totalMessages });
diff --git a/backend/routes/dle.js b/backend/routes/dle.js
index 37d39c0..276e528 100644
--- a/backend/routes/dle.js
+++ b/backend/routes/dle.js
@@ -11,7 +11,7 @@ const fs = require('fs');
  * @desc    Создать новое DLE (Digital Legal Entity)
  * @access  Private (только для авторизованных пользователей с ролью admin)
  */
-router.post('/', auth.requireAuth, auth.requireAdmin, async (req, res) => {
+router.post('/', auth.requireAuth, auth.requireAdmin, async (req, res, next) => {
   try {
     const dleParams = req.body;
     logger.info('Получен запрос на создание DLE:', dleParams);
@@ -44,11 +44,7 @@ router.post('/', auth.requireAuth, auth.requireAdmin, async (req, res) => {
     });
   } catch (error) {
     logger.error('Ошибка при создании DLE:', error);
-    res.status(500).json({
-      success: false,
-      message: error.message || 'Произошла ошибка при создании DLE',
-      error: process.env.NODE_ENV === 'development' ? error.stack : undefined
-    });
+    next(error);
   }
 });
 
@@ -57,7 +53,7 @@ router.post('/', auth.requireAuth, auth.requireAdmin, async (req, res) => {
  * @desc    Получить список всех DLE
  * @access  Private (только для авторизованных пользователей)
  */
-router.get('/', auth.requireAuth, async (req, res) => {
+router.get('/', auth.requireAuth, async (req, res, next) => {
   try {
     const dles = await dleService.getAllDLEs();
     res.json({
@@ -66,11 +62,7 @@ router.get('/', auth.requireAuth, async (req, res) => {
     });
   } catch (error) {
     logger.error('Ошибка при получении списка DLE:', error);
-    res.status(500).json({
-      success: false,
-      message: error.message || 'Произошла ошибка при получении списка DLE',
-      error: process.env.NODE_ENV === 'development' ? error.stack : undefined
-    });
+    next(error);
   }
 });
 
@@ -99,7 +91,7 @@ router.get('/settings', auth.requireAuth, (req, res) => {
  * @desc    Удалить DLE по адресу токена
  * @access  Private (только для авторизованных пользователей с ролью admin)
  */
-router.delete('/:tokenAddress', auth.requireAuth, auth.requireAdmin, async (req, res) => {
+router.delete('/:tokenAddress', auth.requireAuth, auth.requireAdmin, async (req, res, next) => {
   try {
     const { tokenAddress } = req.params;
     logger.info(`Получен запрос на удаление DLE с адресом токена: ${tokenAddress}`);
@@ -142,11 +134,7 @@ router.delete('/:tokenAddress', auth.requireAuth, auth.requireAdmin, async (req,
     });
   } catch (error) {
     logger.error('Ошибка при удалении DLE:', error);
-    res.status(500).json({
-      success: false,
-      message: error.message || 'Произошла ошибка при удалении DLE',
-      error: process.env.NODE_ENV === 'development' ? error.stack : undefined
-    });
+    next(error);
   }
 });
 
@@ -155,7 +143,7 @@ router.delete('/:tokenAddress', auth.requireAuth, auth.requireAdmin, async (req,
  * @desc    Удалить пустое DLE по имени файла
  * @access  Private (только для авторизованных пользователей с ролью admin)
  */
-router.delete('/empty/:fileName', auth.requireAuth, auth.requireAdmin, async (req, res) => {
+router.delete('/empty/:fileName', auth.requireAuth, auth.requireAdmin, async (req, res, next) => {
   try {
     const { fileName } = req.params;
     logger.info(`Получен запрос на удаление пустого DLE с именем файла: ${fileName}`);
@@ -180,11 +168,7 @@ router.delete('/empty/:fileName', auth.requireAuth, auth.requireAdmin, async (re
     });
   } catch (error) {
     logger.error('Ошибка при удалении пустого DLE:', error);
-    res.status(500).json({
-      success: false,
-      message: error.message || 'Произошла ошибка при удалении пустого DLE',
-      error: process.env.NODE_ENV === 'development' ? error.stack : undefined
-    });
+    next(error);
   }
 });
 
diff --git a/backend/routes/identities.js b/backend/routes/identities.js
index b84e336..0046d33 100644
--- a/backend/routes/identities.js
+++ b/backend/routes/identities.js
@@ -6,19 +6,19 @@ const logger = require('../utils/logger');
 const db = require('../db');
 
 // Получение всех идентификаторов пользователя
-router.get('/', requireAuth, async (req, res) => {
+router.get('/', requireAuth, async (req, res, next) => {
   try {
     const userId = req.session.userId;
     const identities = await authService.getUserIdentities(userId);
     res.json({ success: true, identities });
   } catch (error) {
     logger.error('Error getting identities:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
 // Связывание нового идентификатора
-router.post('/link', requireAuth, async (req, res) => {
+router.post('/link', requireAuth, async (req, res, next) => {
   try {
     const { type, value } = req.body;
     const userId = req.session.userId;
@@ -28,7 +28,7 @@ router.post('/link', requireAuth, async (req, res) => {
       const normalizedWallet = value.toLowerCase();
 
       // Проверяем, существует ли уже такой кошелек
-      const existingCheck = await db.query(
+      const existingCheck = await db.getQuery()(
         `SELECT user_id FROM user_identities 
          WHERE provider = 'wallet' AND provider_id = $1`,
         [normalizedWallet]
@@ -73,12 +73,12 @@ router.post('/link', requireAuth, async (req, res) => {
       });
     }
 
-    res.status(500).json({ error: error.message || 'Internal server error' });
+    next(error);
   }
 });
 
 // Получение балансов токенов
-router.get('/token-balances', requireAuth, async (req, res) => {
+router.get('/token-balances', requireAuth, async (req, res, next) => {
   try {
     const userId = req.session.userId;
     if (!userId) {
@@ -103,12 +103,12 @@ router.get('/token-balances', requireAuth, async (req, res) => {
     });
   } catch (error) {
     logger.error('Error getting token balances:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
   }
 });
 
 // Удаление идентификатора пользователя
-router.delete('/:provider/:providerId', requireAuth, async (req, res) => {
+router.delete('/:provider/:providerId', requireAuth, async (req, res, next) => {
   try {
     const userId = req.session.userId;
     const { provider, providerId } = req.params;
@@ -120,7 +120,135 @@ router.delete('/:provider/:providerId', requireAuth, async (req, res) => {
     }
   } catch (error) {
     logger.error('Error deleting identity:', error);
-    res.status(500).json({ error: 'Internal server error' });
+    next(error);
+  }
+});
+
+// Получение email-настроек
+router.get('/email-settings', requireAuth, async (req, res, next) => {
+  try {
+    const { rows } = await db.getQuery()('SELECT * FROM email_settings ORDER BY id LIMIT 1');
+    if (!rows.length) return res.status(404).json({ success: false, error: 'Not found' });
+    const settings = rows[0];
+    delete settings.smtp_password; // не возвращаем пароль
+    res.json({ success: true, settings });
+  } catch (error) {
+    logger.error('Error getting email settings:', error, error && error.stack);
+    next(error);
+  }
+});
+
+// Обновление email-настроек
+router.put('/email-settings', requireAuth, async (req, res, next) => {
+  try {
+    const { smtp_host, smtp_port, smtp_user, smtp_password, imap_host, imap_port, from_email } = req.body;
+    if (!smtp_host || !smtp_port || !smtp_user || !from_email) {
+      return res.status(400).json({ success: false, error: 'Missing required fields' });
+    }
+    const { rows } = await db.getQuery()('SELECT id FROM email_settings ORDER BY id LIMIT 1');
+    if (rows.length) {
+      // Обновляем существующую запись
+      await db.getQuery()(
+        `UPDATE email_settings SET smtp_host=$1, smtp_port=$2, smtp_user=$3, smtp_password=COALESCE($4, smtp_password), imap_host=$5, imap_port=$6, from_email=$7, updated_at=NOW() WHERE id=$8`,
+        [smtp_host, smtp_port, smtp_user, smtp_password, imap_host, imap_port, from_email, rows[0].id]
+      );
+    } else {
+      // Вставляем новую
+      await db.getQuery()(
+        `INSERT INTO email_settings (smtp_host, smtp_port, smtp_user, smtp_password, imap_host, imap_port, from_email) VALUES ($1,$2,$3,$4,$5,$6,$7)`,
+        [smtp_host, smtp_port, smtp_user, smtp_password, imap_host, imap_port, from_email]
+      );
+    }
+    res.json({ success: true });
+  } catch (error) {
+    logger.error('Error updating email settings:', error);
+    next(error);
+  }
+});
+
+// Получение telegram-настроек
+router.get('/telegram-settings', requireAuth, async (req, res, next) => {
+  try {
+    const { rows } = await db.getQuery()('SELECT * FROM telegram_settings ORDER BY id LIMIT 1');
+    if (!rows.length) return res.status(404).json({ success: false, error: 'Not found' });
+    const settings = rows[0];
+    delete settings.bot_token; // не возвращаем токен
+    res.json({ success: true, settings });
+  } catch (error) {
+    logger.error('Error getting telegram settings:', error, error && error.stack);
+    next(error);
+  }
+});
+
+// Обновление telegram-настроек
+router.put('/telegram-settings', requireAuth, async (req, res, next) => {
+  try {
+    const { bot_token, bot_username } = req.body;
+    if (!bot_token || !bot_username) {
+      return res.status(400).json({ success: false, error: 'Missing required fields' });
+    }
+    const { rows } = await db.getQuery()('SELECT id FROM telegram_settings ORDER BY id LIMIT 1');
+    if (rows.length) {
+      // Обновляем существующую запись
+      await db.getQuery()(
+        `UPDATE telegram_settings SET bot_token=$1, bot_username=$2, updated_at=NOW() WHERE id=$3`,
+        [bot_token, bot_username, rows[0].id]
+      );
+    } else {
+      // Вставляем новую
+      await db.getQuery()(
+        `INSERT INTO telegram_settings (bot_token, bot_username) VALUES ($1,$2)` ,
+        [bot_token, bot_username]
+      );
+    }
+    res.json({ success: true });
+  } catch (error) {
+    logger.error('Error updating telegram settings:', error);
+    next(error);
+  }
+});
+
+// Получение db-настроек
+router.get('/db-settings', requireAuth, async (req, res, next) => {
+  try {
+    const { rows } = await db.getQuery()('SELECT * FROM db_settings ORDER BY id LIMIT 1');
+    if (!rows.length) return res.status(404).json({ success: false, error: 'Not found' });
+    const settings = rows[0];
+    delete settings.db_password; // не возвращаем пароль
+    res.json({ success: true, settings });
+  } catch (error) {
+    logger.error('Error getting db settings:', error, error && error.stack);
+    next(error);
+  }
+});
+
+// Обновление db-настроек
+router.put('/db-settings', requireAuth, async (req, res, next) => {
+  try {
+    const { db_host, db_port, db_name, db_user, db_password } = req.body;
+    if (!db_host || !db_port || !db_name || !db_user) {
+      return res.status(400).json({ success: false, error: 'Missing required fields' });
+    }
+    const { rows } = await db.getQuery()('SELECT id FROM db_settings ORDER BY id LIMIT 1');
+    if (rows.length) {
+      // Обновляем существующую запись
+      await db.getQuery()(
+        `UPDATE db_settings SET db_host=$1, db_port=$2, db_name=$3, db_user=$4, db_password=COALESCE($5, db_password), updated_at=NOW() WHERE id=$6`,
+        [db_host, db_port, db_name, db_user, db_password, rows[0].id]
+      );
+    } else {
+      // Вставляем новую
+      await db.getQuery()(
+        `INSERT INTO db_settings (db_host, db_port, db_name, db_user, db_password) VALUES ($1,$2,$3,$4,$5)` ,
+        [db_host, db_port, db_name, db_user, db_password]
+      );
+    }
+    // Пересоздаём пул соединений с новыми настройками
+    await db.reinitPoolFromDbSettings();
+    res.json({ success: true });
+  } catch (error) {
+    logger.error('Error updating db settings:', error);
+    next(error);
   }
 });
 
diff --git a/backend/routes/isic.js b/backend/routes/isic.js
index bf58135..d7ffb71 100644
--- a/backend/routes/isic.js
+++ b/backend/routes/isic.js
@@ -1,6 +1,6 @@
 const express = require('express');
 const router = express.Router();
-const { pool } = require('../db'); // Убедитесь, что путь к вашему db-коннектору правильный
+const db = require('../db');
 const logger = require('../utils/logger'); // Если используете логгер
 
 /**
@@ -98,7 +98,7 @@ router.get('/codes', async (req, res) => {
 
   if (parent_code) {
     try {
-      const parentResult = await pool.query('SELECT code_level FROM isic_rev4_codes WHERE code = $1', [parent_code]);
+      const parentResult = await db.getQuery()('SELECT code_level FROM isic_rev4_codes WHERE code = $1', [parent_code]);
       if (parentResult.rows.length > 0) {
         const parentLevel = parentResult.rows[0].code_level;
         if (parentLevel >= 1 && parentLevel < 6) {
@@ -146,7 +146,7 @@ router.get('/codes', async (req, res) => {
     }
     if (parent_code) {
         // Предполагаем, что parent_code уже добавлен в countQueryParams
-        const parentLevelResult = await pool.query('SELECT code_level FROM isic_rev4_codes WHERE code = $1', [parent_code]); // Нужно будет передать parent_code в countQueryParams
+        const parentLevelResult = await db.getQuery()('SELECT code_level FROM isic_rev4_codes WHERE code = $1', [parent_code]); // Нужно будет передать parent_code в countQueryParams
         if (parentLevelResult.rows.length > 0) {
             const parentLevel = parentLevelResult.rows[0].code_level;
             if (parentLevel >=1 && parentLevel < 6) {
@@ -174,7 +174,7 @@ router.get('/codes', async (req, res) => {
       const queryWhereConditions = [];
       if (level) queryWhereConditions.push(`c.code_level = $${currentQueryParamIndex++}`);
       if (parent_code) {
-          const parentLevelResult = await pool.query('SELECT code_level FROM isic_rev4_codes WHERE code = $1', [parent_code]); // Это дублирование, лучше получить parentLevel один раз
+          const parentLevelResult = await db.getQuery()('SELECT code_level FROM isic_rev4_codes WHERE code = $1', [parent_code]); // Это дублирование, лучше получить parentLevel один раз
            if (parentLevelResult.rows.length > 0) {
                 const parentLevel = parentLevelResult.rows[0].code_level;
                 if (parentLevel >=1 && parentLevel < 6) {
@@ -193,12 +193,12 @@ router.get('/codes', async (req, res) => {
 
   try {
     logger.debug('Executing count query:', finalCountQuery, 'Params:', countQueryParams);
-    const totalItemsResult = await pool.query(finalCountQuery, countQueryParams);
+    const totalItemsResult = await db.getQuery()(finalCountQuery, countQueryParams);
     const totalItems = parseInt(totalItemsResult.rows[0].total, 10);
 
     // Параметры для основного запроса - это все, что в queryParams (включая limit и offset)
     logger.debug('Executing data query:', finalQuery, 'Params:', queryParams);
-    const result = await pool.query(finalQuery, queryParams);
+    const result = await db.getQuery()(finalQuery, queryParams);
     
     res.json({
       totalItems,
@@ -253,13 +253,13 @@ router.get('/tree', async (req, res) => {
   try {
     let items;
     if (!root_code) { // Если нет root_code, возвращаем секции (уровень 1)
-      const result = await pool.query(
+      const result = await db.getQuery()(
         "SELECT code, description, code_level FROM isic_rev4_codes WHERE code_level = 1 ORDER BY sort_order, code"
       );
       items = result.rows.map(row => ({ ...row, children: [] })); // Добавляем пустой массив children
     } else {
       // Получаем сам root_code
-      const rootResult = await pool.query(
+      const rootResult = await db.getQuery()(
         "SELECT code, description, code_level FROM isic_rev4_codes WHERE code = $1",
         [root_code]
       );
@@ -281,7 +281,7 @@ router.get('/tree', async (req, res) => {
 
 
       if (childrenQuery) {
-        const childrenResult = await pool.query(childrenQuery, childrenParams);
+        const childrenResult = await db.getQuery()(childrenQuery, childrenParams);
         rootNode.children = childrenResult.rows.map(row => ({ ...row, children: [] })); 
       }
       items = [rootNode]; 
diff --git a/backend/routes/settings.js b/backend/routes/settings.js
index 520733f..cf21e4c 100644
--- a/backend/routes/settings.js
+++ b/backend/routes/settings.js
@@ -5,23 +5,25 @@ const logger = require('../utils/logger');
 const { ethers } = require('ethers');
 const rpcProviderService = require('../services/rpcProviderService');
 const authTokenService = require('../services/authTokenService');
+const aiProviderSettingsService = require('../services/aiProviderSettingsService');
+const aiAssistant = require('../services/ai-assistant');
 
 // Логируем версию ethers для отладки
 logger.info(`Ethers version: ${ethers.version || 'unknown'}`);
 
 // Получение RPC настроек
-router.get('/rpc', requireAdmin, async (req, res) => {
+router.get('/rpc', requireAdmin, async (req, res, next) => {
   try {
     const rpcConfigs = await rpcProviderService.getAllRpcProviders();
     res.json({ success: true, data: rpcConfigs });
   } catch (error) {
     logger.error('Ошибка при получении RPC настроек:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при получении настроек RPC' });
+    next(error);
   }
 });
 
 // Добавление/обновление одного или нескольких RPC
-router.post('/rpc', requireAdmin, async (req, res) => {
+router.post('/rpc', requireAdmin, async (req, res, next) => {
   try {
     // Если пришёл массив rpcConfigs — bulk-режим
     if (Array.isArray(req.body.rpcConfigs)) {
@@ -41,35 +43,35 @@ router.post('/rpc', requireAdmin, async (req, res) => {
     res.json({ success: true, message: 'RPC провайдер сохранён' });
   } catch (error) {
     logger.error('Ошибка при сохранении RPC:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при сохранении RPC' });
+    next(error);
   }
 });
 
 // Удаление одного RPC
-router.delete('/rpc/:networkId', requireAdmin, async (req, res) => {
+router.delete('/rpc/:networkId', requireAdmin, async (req, res, next) => {
   try {
     const { networkId } = req.params;
     await rpcProviderService.deleteRpcProvider(networkId);
     res.json({ success: true, message: 'RPC провайдер удалён' });
   } catch (error) {
     logger.error('Ошибка при удалении RPC:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при удалении RPC' });
+    next(error);
   }
 });
 
 // Получение токенов для аутентификации
-router.get('/auth-tokens', requireAdmin, async (req, res) => {
+router.get('/auth-tokens', requireAdmin, async (req, res, next) => {
   try {
     const authTokens = await authTokenService.getAllAuthTokens();
     res.json({ success: true, data: authTokens });
   } catch (error) {
     logger.error('Ошибка при получении токенов аутентификации:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при получении токенов аутентификации' });
+    next(error);
   }
 });
 
 // Сохранение токенов для аутентификации
-router.post('/auth-tokens', requireAdmin, async (req, res) => {
+router.post('/auth-tokens', requireAdmin, async (req, res, next) => {
   try {
     const { authTokens } = req.body;
     if (!Array.isArray(authTokens)) {
@@ -79,12 +81,12 @@ router.post('/auth-tokens', requireAdmin, async (req, res) => {
     res.json({ success: true, message: 'Токены аутентификации успешно сохранены' });
   } catch (error) {
     logger.error('Ошибка при сохранении токенов аутентификации:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при сохранении токенов аутентификации' });
+    next(error);
   }
 });
 
 // Добавление/обновление одного токена
-router.post('/auth-token', requireAdmin, async (req, res) => {
+router.post('/auth-token', requireAdmin, async (req, res, next) => {
   try {
     const { name, address, network, minBalance } = req.body;
     if (!name || !address || !network) {
@@ -94,24 +96,24 @@ router.post('/auth-token', requireAdmin, async (req, res) => {
     res.json({ success: true, message: 'Токен аутентификации сохранён' });
   } catch (error) {
     logger.error('Ошибка при сохранении токена аутентификации:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при сохранении токена' });
+    next(error);
   }
 });
 
 // Удаление одного токена
-router.delete('/auth-token/:address/:network', requireAdmin, async (req, res) => {
+router.delete('/auth-token/:address/:network', requireAdmin, async (req, res, next) => {
   try {
     const { address, network } = req.params;
     await authTokenService.deleteAuthToken(address, network);
     res.json({ success: true, message: 'Токен аутентификации удалён' });
   } catch (error) {
     logger.error('Ошибка при удалении токена аутентификации:', error);
-    res.status(500).json({ success: false, error: 'Ошибка сервера при удалении токена' });
+    next(error);
   }
 });
 
 // Тестирование RPC соединения
-router.post('/rpc-test', requireAdmin, async (req, res) => {
+router.post('/rpc-test', requireAdmin, async (req, res, next) => {
   try {
     const { rpcUrl, networkId } = req.body;
     
@@ -164,4 +166,76 @@ router.post('/rpc-test', requireAdmin, async (req, res) => {
   }
 });
 
+// Получить настройки AI-провайдера
+router.get('/ai-settings/:provider', requireAdmin, async (req, res, next) => {
+  try {
+    const { provider } = req.params;
+    const settings = await aiProviderSettingsService.getProviderSettings(provider);
+    res.json({ success: true, settings });
+  } catch (error) {
+    logger.error('Ошибка при получении AI-настроек:', error);
+    next(error);
+  }
+});
+
+// Сохранить/обновить настройки AI-провайдера
+router.put('/ai-settings/:provider', requireAdmin, async (req, res, next) => {
+  try {
+    const { provider } = req.params;
+    const { api_key, base_url, selected_model } = req.body;
+    const updated = await aiProviderSettingsService.upsertProviderSettings({ provider, api_key, base_url, selected_model });
+    res.json({ success: true, settings: updated });
+  } catch (error) {
+    logger.error('Ошибка при сохранении AI-настроек:', error);
+    next(error);
+  }
+});
+
+// Удалить настройки AI-провайдера
+router.delete('/ai-settings/:provider', requireAdmin, async (req, res, next) => {
+  try {
+    const { provider } = req.params;
+    await aiProviderSettingsService.deleteProviderSettings(provider);
+    res.json({ success: true });
+  } catch (error) {
+    logger.error('Ошибка при удалении AI-настроек:', error);
+    next(error);
+  }
+});
+
+// Получить список моделей для провайдера
+router.get('/ai-settings/:provider/models', requireAdmin, async (req, res, next) => {
+  try {
+    const { provider } = req.params;
+    const settings = await aiProviderSettingsService.getProviderSettings(provider);
+    let models = [];
+    if (provider === 'ollama') {
+      models = await aiAssistant.getAvailableModels();
+    } else {
+      models = await aiProviderSettingsService.getProviderModels(provider, settings || {});
+    }
+    res.json({ success: true, models });
+  } catch (error) {
+    logger.error('Ошибка при получении моделей AI:', error);
+    res.status(500).json({ success: false, error: error.message });
+  }
+});
+
+// Проверить валидность ключа (verify)
+router.post('/ai-settings/:provider/verify', requireAdmin, async (req, res, next) => {
+  try {
+    const { provider } = req.params;
+    const { api_key, base_url } = req.body;
+    const result = await aiProviderSettingsService.verifyProviderKey(provider, { api_key, base_url });
+    if (result.success) {
+      res.json({ success: true });
+    } else {
+      res.status(400).json({ success: false, error: result.error });
+    }
+  } catch (error) {
+    logger.error('Ошибка при проверке AI-ключа:', error);
+    res.status(500).json({ success: false, error: error.message });
+  }
+});
+
 module.exports = router; 
\ No newline at end of file
diff --git a/backend/routes/tokens.js b/backend/routes/tokens.js
index cf33025..ae0b972 100644
--- a/backend/routes/tokens.js
+++ b/backend/routes/tokens.js
@@ -4,7 +4,7 @@ const logger = require('../utils/logger');
 const authService = require('../services/auth-service');
 
 // Получение балансов токенов пользователя по токенам из базы
-router.get('/balances', async (req, res) => {
+router.get('/balances', async (req, res, next) => {
   try {
     const address = req.query.address;
     if (!address) {
@@ -15,7 +15,7 @@ router.get('/balances', async (req, res) => {
     res.json({ success: true, data: balances });
   } catch (error) {
     logger.error('Error fetching token balances:', error);
-    res.status(500).json({ success: false, error: 'Failed to fetch token balances' });
+    next(error);
   }
 });
 
diff --git a/backend/routes/users.js b/backend/routes/users.js
index 0107454..d43e11d 100644
--- a/backend/routes/users.js
+++ b/backend/routes/users.js
@@ -20,53 +20,42 @@ router.get('/:address', (req, res) => {
 });
 
 // Маршрут для обновления языка пользователя
-router.post('/update-language', requireAuth, async (req, res) => {
+router.post('/update-language', requireAuth, async (req, res, next) => {
   try {
     const { language } = req.body;
     const userId = req.session.userId;
-
-    // Проверка валидности языка
     const validLanguages = ['ru', 'en'];
     if (!validLanguages.includes(language)) {
       return res.status(400).json({ error: 'Неподдерживаемый язык' });
     }
-
-    // Обновление языка в базе данных
-    await db.query('UPDATE users SET preferred_language = $1 WHERE id = $2', [language, userId]);
-
+    await db.getQuery()('UPDATE users SET preferred_language = $1 WHERE id = $2', [language, userId]);
     res.json({ success: true });
   } catch (error) {
     logger.error('Error updating language:', error);
-    res.status(500).json({ error: 'Внутренняя ошибка сервера' });
+    next(error);
   }
 });
 
 // Маршрут для обновления имени и фамилии пользователя
-router.post('/update-profile', requireAuth, async (req, res) => {
+router.post('/update-profile', requireAuth, async (req, res, next) => {
   try {
     const { firstName, lastName } = req.body;
     const userId = req.session.userId;
-
-    // Проверка валидности данных
     if (firstName && firstName.length > 255) {
       return res.status(400).json({ error: 'Имя слишком длинное (максимум 255 символов)' });
     }
-
     if (lastName && lastName.length > 255) {
       return res.status(400).json({ error: 'Фамилия слишком длинная (максимум 255 символов)' });
     }
-
-    // Обновление имени и фамилии в базе данных
-    await db.query('UPDATE users SET first_name = $1, last_name = $2 WHERE id = $3', [
+    await db.getQuery()('UPDATE users SET first_name = $1, last_name = $2 WHERE id = $3', [
       firstName || null,
       lastName || null,
       userId,
     ]);
-
     res.json({ success: true });
   } catch (error) {
     logger.error('Error updating user profile:', error);
-    res.status(500).json({ error: 'Внутренняя ошибка сервера' });
+    next(error);
   }
 });
 
diff --git a/backend/scripts/run-migrations.js b/backend/scripts/run-migrations.js
index f1eb10f..d2f2cff 100644
--- a/backend/scripts/run-migrations.js
+++ b/backend/scripts/run-migrations.js
@@ -1,7 +1,8 @@
 const fs = require('fs').promises;
 const path = require('path');
 require('dotenv').config();
-const { pool } = require('../db');
+const { getPool } = require('../db');
+const pool = getPool();
 const logger = require('../utils/logger');
 
 async function runMigrations() {
diff --git a/backend/services/aiProviderSettingsService.js b/backend/services/aiProviderSettingsService.js
new file mode 100644
index 0000000..080c25e
--- /dev/null
+++ b/backend/services/aiProviderSettingsService.js
@@ -0,0 +1,105 @@
+const db = require('../db');
+const OpenAI = require('openai');
+const Anthropic = require('@anthropic-ai/sdk');
+const { GoogleGenAI } = require('@google/genai');
+
+const TABLE = 'ai_providers_settings';
+
+async function getProviderSettings(provider) {
+  const { rows } = await db.getQuery()(
+    `SELECT * FROM ${TABLE} WHERE provider = $1 LIMIT 1`,
+    [provider]
+  );
+  return rows[0] || null;
+}
+
+async function upsertProviderSettings({ provider, api_key, base_url, selected_model }) {
+  const { rows } = await db.getQuery()(
+    `INSERT INTO ${TABLE} (provider, api_key, base_url, selected_model, updated_at)
+     VALUES ($1, $2, $3, $4, NOW())
+     ON CONFLICT (provider) DO UPDATE SET
+       api_key = EXCLUDED.api_key,
+       base_url = EXCLUDED.base_url,
+       selected_model = EXCLUDED.selected_model,
+       updated_at = NOW()
+     RETURNING *`,
+    [provider, api_key, base_url, selected_model]
+  );
+  return rows[0];
+}
+
+async function deleteProviderSettings(provider) {
+  await db.getQuery()(
+    `DELETE FROM ${TABLE} WHERE provider = $1`,
+    [provider]
+  );
+}
+
+async function getProviderModels(provider, { api_key, base_url } = {}) {
+  try {
+    if (provider === 'openai') {
+      const client = new OpenAI({ apiKey: api_key, baseURL: base_url });
+      const res = await client.models.list();
+      return res.data ? res.data.map(m => ({ id: m.id, ...m })) : [];
+    }
+    if (provider === 'anthropic') {
+      const client = new Anthropic({ apiKey: api_key, baseURL: base_url });
+      const res = await client.models.list();
+      return res.data ? res.data.map(m => ({ id: m.id, ...m })) : [];
+    }
+    if (provider === 'google') {
+      const ai = new GoogleGenAI({ apiKey: api_key, baseUrl: base_url });
+      const pager = await ai.models.list();
+      const models = [];
+      for await (const model of pager) {
+        models.push(model);
+      }
+      return models;
+    }
+    if (provider === 'ollama') {
+      // Для Ollama — через ai-assistant.js
+      return [];
+    }
+    return [];
+  } catch (error) {
+    return [];
+  }
+}
+
+async function verifyProviderKey(provider, { api_key, base_url } = {}) {
+  try {
+    if (provider === 'openai') {
+      const client = new OpenAI({ apiKey: api_key, baseURL: base_url });
+      await client.models.list();
+      return { success: true };
+    }
+    if (provider === 'anthropic') {
+      const client = new Anthropic({ apiKey: api_key, baseURL: base_url });
+      await client.models.list();
+      return { success: true };
+    }
+    if (provider === 'google') {
+      const ai = new GoogleGenAI({ apiKey: api_key, baseUrl: base_url });
+      const pager = await ai.models.list();
+      for await (const _ of pager) {
+        break;
+      }
+      return { success: true };
+    }
+    if (provider === 'ollama') {
+      // Для Ollama — всегда true (локальный)
+      return { success: true };
+    }
+    return { success: false, error: 'Unknown provider' };
+  } catch (error) {
+    return { success: false, error: error.message };
+  }
+}
+
+module.exports = {
+  getProviderSettings,
+  upsertProviderSettings,
+  deleteProviderSettings,
+  getProviderModels,
+  verifyProviderKey,
+}; 
\ No newline at end of file
diff --git a/backend/services/authTokenService.js b/backend/services/authTokenService.js
index d559353..06644d1 100644
--- a/backend/services/authTokenService.js
+++ b/backend/services/authTokenService.js
@@ -1,7 +1,7 @@
 const db = require('../db');
 
 async function getAllAuthTokens() {
-  const { rows } = await db.query('SELECT * FROM auth_tokens ORDER BY id');
+  const { rows } = await db.getQuery()('SELECT * FROM auth_tokens ORDER BY id');
   return rows;
 }
 
diff --git a/backend/services/emailAuth.js b/backend/services/emailAuth.js
index 63f57f4..128352b 100644
--- a/backend/services/emailAuth.js
+++ b/backend/services/emailAuth.js
@@ -1,13 +1,13 @@
 const { pool } = require('../db');
 const verificationService = require('./verification-service');
 const logger = require('../utils/logger');
-const emailBot = require('./emailBot');
+const EmailBotService = require('./emailBot');
 const db = require('../db');
 const authService = require('./auth-service');
 
 class EmailAuth {
   constructor() {
-    this.emailBot = emailBot;
+    this.emailBot = new EmailBotService();
   }
 
   async initEmailAuth(session, email) {
@@ -17,7 +17,7 @@ class EmailAuth {
       }
 
       // Проверяем, существует ли пользователь с таким email
-      const existingEmailUser = await db.query(
+      const existingEmailUser = await db.getQuery()(
         `SELECT u.id FROM users u 
          JOIN user_identities i ON u.id = i.user_id 
          WHERE i.provider = 'email' AND i.provider_id = $1`,
diff --git a/backend/services/emailBot.js b/backend/services/emailBot.js
index 7adf63b..8638bcd 100644
--- a/backend/services/emailBot.js
+++ b/backend/services/emailBot.js
@@ -1,4 +1,4 @@
-const { pool } = require('../db');
+const db = require('../db');
 const nodemailer = require('nodemailer');
 const Imap = require('imap');
 const simpleParser = require('mailparser').simpleParser;
@@ -6,61 +6,47 @@ const { processMessage } = require('./ai-assistant');
 const { inspect } = require('util');
 const logger = require('../utils/logger');
 
-// Конфигурация для отправки писем
-const transporter = nodemailer.createTransport({
-  host: process.env.EMAIL_SMTP_HOST || 'smtp.hostland.ru',
-  port: process.env.EMAIL_SMTP_PORT || 465,
-  secure: true,
-  auth: {
-    user: process.env.EMAIL_USER,
-    pass: process.env.EMAIL_PASSWORD,
-  },
-  pool: true,
-  maxConnections: 3,
-  maxMessages: 5,
-  tls: {
-    rejectUnauthorized: false,
-  },
-});
-
-// Конфигурация для получения писем
-const imapConfig = {
-  user: process.env.EMAIL_USER,
-  password: process.env.EMAIL_PASSWORD,
-  host: process.env.EMAIL_IMAP_HOST,
-  port: process.env.EMAIL_IMAP_PORT,
-  tls: true,
-  tlsOptions: { rejectUnauthorized: false },
-  keepalive: {
-    interval: 10000,
-    idleInterval: 300000,
-    forceNoop: true,
-  },
-};
-
 class EmailBotService {
-  constructor() {
-    this.transporter = transporter;
-    this.imap = new Imap(imapConfig);
-    this.initialize();
+  async getSettingsFromDb() {
+    const { rows } = await db.getQuery()('SELECT * FROM email_settings ORDER BY id LIMIT 1');
+    if (!rows.length) throw new Error('Email settings not found in DB');
+    return rows[0];
   }
 
-  initialize() {
-    this.imap.once('error', (err) => {
-      logger.error(`IMAP connection error: ${err.message}`);
-      setTimeout(() => {
-        try {
-          if (this.imap.state !== 'connected') {
-            this.imap = new Imap(imapConfig);
-            this.initialize();
-          }
-        } catch (e) {
-          logger.error(`Error reconnecting IMAP: ${e.message}`);
-        }
-      }, 60000);
+  async getTransporter() {
+    const settings = await this.getSettingsFromDb();
+    return nodemailer.createTransport({
+      host: settings.smtp_host,
+      port: settings.smtp_port,
+      secure: true,
+      auth: {
+        user: settings.smtp_user,
+        pass: settings.smtp_password,
+      },
+      pool: true,
+      maxConnections: 3,
+      maxMessages: 5,
+      tls: { rejectUnauthorized: false },
     });
   }
 
+  async getImapConfig() {
+    const settings = await this.getSettingsFromDb();
+    return {
+      user: settings.smtp_user,
+      password: settings.smtp_password,
+      host: settings.imap_host,
+      port: settings.imap_port,
+      tls: true,
+      tlsOptions: { rejectUnauthorized: false },
+      keepalive: {
+        interval: 10000,
+        idleInterval: 300000,
+        forceNoop: true,
+      },
+    };
+  }
+
   // Метод для инициализации email верификации
   async initEmailVerification(email, userId, code) {
     try {
@@ -77,24 +63,16 @@ class EmailBotService {
   // Отправка кода верификации
   async sendVerificationCode(email, code) {
     try {
+      const settings = await this.getSettingsFromDb();
+      const transporter = await this.getTransporter();
       const mailOptions = {
-        from: process.env.EMAIL_USER,
+        from: settings.from_email,
         to: email,
         subject: 'Код подтверждения',
         text: `Ваш код подтверждения: ${code}\n\nКод действителен в течение 15 минут.`,
-        html: `
-          <div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto;">
-            <h2 style="color: #333;">Код подтверждения</h2>
-            <p style="font-size: 16px; color: #666;">Ваш код подтверждения:</p>
-            <div style="background-color: #f5f5f5; padding: 15px; border-radius: 5px; text-align: center; margin: 20px 0;">
-              <span style="font-size: 24px; font-weight: bold; color: #333;">${code}</span>
-            </div>
-            <p style="font-size: 14px; color: #999;">Код действителен в течение 15 минут.</p>
-          </div>
-        `,
+        html: `<div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto;"><h2 style="color: #333;">Код подтверждения</h2><p style="font-size: 16px; color: #666;">Ваш код подтверждения:</p><div style="background-color: #f5f5f5; padding: 15px; border-radius: 5px; text-align: center; margin: 20px 0;"><span style="font-size: 24px; font-weight: bold; color: #333;">${code}</span></div><p style="font-size: 14px; color: #999;">Код действителен в течение 15 минут.</p></div>`,
       };
-
-      await this.transporter.sendMail(mailOptions);
+      await transporter.sendMail(mailOptions);
       logger.info(`Verification code sent to ${email}`);
     } catch (error) {
       logger.error('Error sending verification code:', error);
@@ -187,14 +165,15 @@ class EmailBotService {
   // Метод для отправки email
   async sendEmail(to, subject, text) {
     try {
+      const settings = await this.getSettingsFromDb();
+      const transporter = await this.getTransporter();
       const mailOptions = {
-        from: process.env.EMAIL_USER,
+        from: settings.from_email,
         to,
         subject,
         text,
       };
-
-      await this.transporter.sendMail(mailOptions);
+      await transporter.sendMail(mailOptions);
       logger.info(`Email sent to ${to}`);
       return true;
     } catch (error) {
@@ -204,5 +183,4 @@ class EmailBotService {
   }
 }
 
-// Экспортируем singleton instance
-module.exports = new EmailBotService();
+module.exports = EmailBotService;
diff --git a/backend/services/identity-service.js b/backend/services/identity-service.js
index ca6cf61..c9b1413 100644
--- a/backend/services/identity-service.js
+++ b/backend/services/identity-service.js
@@ -62,7 +62,7 @@ class IdentityService {
         );
 
         try {
-          await db.query(
+          await db.getQuery()(
             'INSERT INTO guest_user_mapping (user_id, guest_id) VALUES ($1, $2) ON CONFLICT (guest_id) DO UPDATE SET user_id = $1',
             [userId, normalizedProviderId]
           );
@@ -91,7 +91,7 @@ class IdentityService {
       );
 
       // Проверяем, существует ли уже такой идентификатор
-      const existingResult = await db.query(
+      const existingResult = await db.getQuery()(
         `SELECT user_id FROM user_identities WHERE provider = $1 AND provider_id = $2`,
         [normalizedProvider, normalizedProviderId]
       );
@@ -116,7 +116,7 @@ class IdentityService {
         }
       } else {
         // Создаем новую запись
-        await db.query(
+        await db.getQuery()(
           `INSERT INTO user_identities (user_id, provider, provider_id) 
            VALUES ($1, $2, $3)`,
           [userId, normalizedProvider, normalizedProviderId]
@@ -148,7 +148,7 @@ class IdentityService {
         return [];
       }
 
-      const result = await db.query(
+      const result = await db.getQuery()(
         `SELECT provider, provider_id FROM user_identities WHERE user_id = $1`,
         [userId]
       );
@@ -174,7 +174,7 @@ class IdentityService {
         return [];
       }
 
-      const result = await db.query(
+      const result = await db.getQuery()(
         `SELECT provider_id FROM user_identities WHERE user_id = $1 AND provider = $2`,
         [userId, provider]
       );
@@ -211,7 +211,7 @@ class IdentityService {
       const { provider: normalizedProvider, providerId: normalizedProviderId } =
         this.normalizeIdentity(provider, providerId);
 
-      const result = await db.query(
+      const result = await db.getQuery()(
         `SELECT u.id, u.role FROM users u 
          JOIN user_identities ui ON u.id = ui.user_id 
          WHERE ui.provider = $1 AND ui.provider_id = $2`,
@@ -255,7 +255,7 @@ class IdentityService {
       // Нормализуем провайдера
       const normalizedProvider = provider.toLowerCase();
 
-      const result = await db.query(
+      const result = await db.getQuery()(
         `SELECT provider, provider_id, created_at, updated_at 
          FROM user_identities 
          WHERE user_id = $1 AND provider = $2 
@@ -320,7 +320,7 @@ class IdentityService {
       // Сохраняем гостевые идентификаторы в guest_user_mapping
       if (session.guestId) {
         try {
-          await db.query(
+          await db.getQuery()(
             'INSERT INTO guest_user_mapping (user_id, guest_id) VALUES ($1, $2) ON CONFLICT (guest_id) DO UPDATE SET user_id = $1',
             [userId, session.guestId]
           );
@@ -333,7 +333,7 @@ class IdentityService {
 
       if (session.previousGuestId && session.previousGuestId !== session.guestId) {
         try {
-          await db.query(
+          await db.getQuery()(
             'INSERT INTO guest_user_mapping (user_id, guest_id) VALUES ($1, $2) ON CONFLICT (guest_id) DO UPDATE SET user_id = $1',
             [userId, session.previousGuestId]
           );
@@ -479,7 +479,7 @@ class IdentityService {
       for (const [provider, providerId] of Object.entries(identities)) {
         if (!providerId) continue;
 
-        const result = await db.query(
+        const result = await db.getQuery()(
           `SELECT DISTINCT user_id 
            FROM user_identities 
            WHERE provider = $1 AND provider_id = $2`,
@@ -510,7 +510,7 @@ class IdentityService {
         return { success: false, error: 'Missing required parameters' };
       }
       const { provider: normalizedProvider, providerId: normalizedProviderId } = this.normalizeIdentity(provider, providerId);
-      const result = await db.query(
+      const result = await db.getQuery()(
         `DELETE FROM user_identities WHERE user_id = $1 AND provider = $2 AND provider_id = $3`,
         [userId, normalizedProvider, normalizedProviderId]
       );
diff --git a/backend/services/rpcProviderService.js b/backend/services/rpcProviderService.js
index 3ab3974..3fb410c 100644
--- a/backend/services/rpcProviderService.js
+++ b/backend/services/rpcProviderService.js
@@ -1,7 +1,7 @@
 const db = require('../db');
 
 async function getAllRpcProviders() {
-  const { rows } = await db.query('SELECT * FROM rpc_providers ORDER BY id');
+  const { rows } = await db.getQuery()('SELECT * FROM rpc_providers ORDER BY id');
   return rows;
 }
 
diff --git a/backend/services/session-service.js b/backend/services/session-service.js
index d5962e8..077f352 100644
--- a/backend/services/session-service.js
+++ b/backend/services/session-service.js
@@ -51,7 +51,7 @@ class SessionService {
       }
 
       // Получаем все гостевые ID для текущего пользователя из новой таблицы
-      const guestIdsResult = await db.query(
+      const guestIdsResult = await db.getQuery()(
         'SELECT guest_id FROM guest_user_mapping WHERE user_id = $1',
         [userId]
       );
diff --git a/backend/services/telegramBot.js b/backend/services/telegramBot.js
index dce7506..82a6c84 100644
--- a/backend/services/telegramBot.js
+++ b/backend/services/telegramBot.js
@@ -6,11 +6,21 @@ const verificationService = require('./verification-service');
 const crypto = require('crypto');
 
 let botInstance = null;
+let telegramSettingsCache = null;
+
+async function getTelegramSettings() {
+  if (telegramSettingsCache) return telegramSettingsCache;
+  const { rows } = await db.getQuery()('SELECT * FROM telegram_settings ORDER BY id LIMIT 1');
+  if (!rows.length) throw new Error('Telegram settings not found in DB');
+  telegramSettingsCache = rows[0];
+  return telegramSettingsCache;
+}
 
 // Создание и настройка бота
 async function getBot() {
   if (!botInstance) {
-    botInstance = new Telegraf(process.env.TELEGRAM_BOT_TOKEN);
+    const settings = await getTelegramSettings();
+    botInstance = new Telegraf(settings.bot_token);
 
     // Обработка команды /start
     botInstance.command('start', (ctx) => {
@@ -23,7 +33,7 @@ async function getBot() {
 
       try {
         // Получаем код верификации для всех активных кодов с провайдером telegram
-        const codeResult = await db.query(
+        const codeResult = await db.getQuery()(
           `SELECT * FROM verification_codes 
            WHERE code = $1 
            AND provider = 'telegram' 
@@ -44,14 +54,14 @@ async function getBot() {
         let userRole = 'user'; // Роль по умолчанию
 
         // Отмечаем код как использованный
-        await db.query('UPDATE verification_codes SET used = true WHERE id = $1', [
+        await db.getQuery()('UPDATE verification_codes SET used = true WHERE id = $1', [
           verification.id,
         ]);
 
         logger.info('Starting Telegram auth process for code:', code);
 
         // Проверяем, существует ли уже пользователь с таким Telegram ID
-        const existingTelegramUser = await db.query(
+        const existingTelegramUser = await db.getQuery()(
           `SELECT ui.user_id 
            FROM user_identities ui 
            WHERE ui.provider = 'telegram' AND ui.provider_id = $1`,
@@ -68,7 +78,7 @@ async function getBot() {
             // Используем userId из кода верификации
             userId = linkedUserId;
             // Связываем Telegram с этим пользователем
-            await db.query(
+            await db.getQuery()(
               `INSERT INTO user_identities 
                (user_id, provider, provider_id, created_at) 
                VALUES ($1, $2, $3, NOW())`,
@@ -81,7 +91,7 @@ async function getBot() {
             // Проверяем, есть ли пользователь, связанный с гостевым идентификатором
             let existingUserWithGuestId = null;
             if (providerId) {
-              const guestUserResult = await db.query(
+              const guestUserResult = await db.getQuery()(
                 `SELECT user_id FROM guest_user_mapping WHERE guest_id = $1`,
                 [providerId]
               );
@@ -96,7 +106,7 @@ async function getBot() {
             if (existingUserWithGuestId) {
               // Используем существующего пользователя и добавляем ему Telegram идентификатор
               userId = existingUserWithGuestId;
-              await db.query(
+              await db.getQuery()(
                 `INSERT INTO user_identities 
                  (user_id, provider, provider_id, created_at) 
                  VALUES ($1, $2, $3, NOW())`,
@@ -105,14 +115,14 @@ async function getBot() {
               logger.info(`Linked Telegram account ${ctx.from.id} to existing user ${userId}`);
             } else {
               // Создаем нового пользователя, если не нашли существующего
-              const userResult = await db.query(
+              const userResult = await db.getQuery()(
                 'INSERT INTO users (created_at, role) VALUES (NOW(), $1) RETURNING id',
                 ['user']
               );
               userId = userResult.rows[0].id;
 
               // Связываем Telegram с новым пользователем
-              await db.query(
+              await db.getQuery()(
                 `INSERT INTO user_identities 
                  (user_id, provider, provider_id, created_at) 
                  VALUES ($1, $2, $3, NOW())`,
@@ -121,7 +131,7 @@ async function getBot() {
 
               // Если был гостевой ID, связываем его с новым пользователем
               if (providerId) {
-                await db.query(
+                await db.getQuery()(
                   `INSERT INTO guest_user_mapping 
                    (user_id, guest_id) 
                    VALUES ($1, $2)
@@ -147,15 +157,15 @@ async function getBot() {
               logger.info(`[TelegramBot] Role for user ${userId} determined as: ${userRole}`);
 
               // Опционально: Обновить роль в таблице users
-              const currentUser = await db.query('SELECT role FROM users WHERE id = $1', [userId]);
+              const currentUser = await db.getQuery()('SELECT role FROM users WHERE id = $1', [userId]);
               if (currentUser.rows.length > 0 && currentUser.rows[0].role !== userRole) {
-                await db.query('UPDATE users SET role = $1 WHERE id = $2', [userRole, userId]);
+                await db.getQuery()('UPDATE users SET role = $1 WHERE id = $2', [userRole, userId]);
                 logger.info(`[TelegramBot] Updated user role in DB to ${userRole}`);
               }
             } else {
               logger.info(`[TelegramBot] No linked wallet found for user ${userId}. Checking current DB role.`);
               // Если кошелька нет, берем текущую роль из базы
-              const currentUser = await db.query('SELECT role FROM users WHERE id = $1', [userId]);
+              const currentUser = await db.getQuery()('SELECT role FROM users WHERE id = $1', [userId]);
               if (currentUser.rows.length > 0) {
                 userRole = currentUser.rows[0].role;
               }
@@ -164,7 +174,7 @@ async function getBot() {
             logger.error(`[TelegramBot] Error checking admin role for user ${userId}:`, roleCheckError);
             // В случае ошибки берем роль из базы или оставляем 'user'
             try {
-                const currentUser = await db.query('SELECT role FROM users WHERE id = $1', [userId]);
+                const currentUser = await db.getQuery()('SELECT role FROM users WHERE id = $1', [userId]);
                 if (currentUser.rows.length > 0) { userRole = currentUser.rows[0].role; }
             } catch (dbError) { /* ignore */ }
           }
@@ -181,7 +191,7 @@ async function getBot() {
         try {
           // Ищем сессию, где есть userId и она не истекла (проверка expires_at)
           // Сортируем по expires_at DESC чтобы взять самую "свежую", если их несколько
-          const sessionResult = await db.query(
+          const sessionResult = await db.getQuery()(
              `SELECT sid FROM session 
               WHERE sess ->> 'userId' = $1 
               AND expire > NOW()
@@ -195,7 +205,7 @@ async function getBot() {
             logger.info(`[telegramBot] Found active session ID ${activeSessionId} for user ${userId}`);
 
             // Обновляем найденную сессию в базе данных, добавляя/перезаписывая данные Telegram
-            const updateResult = await db.query(
+            const updateResult = await db.getQuery()(
               `UPDATE session 
                SET sess = (sess::jsonb || $1::jsonb)::json
                WHERE sid = $2`,
@@ -275,7 +285,7 @@ async function initTelegramAuth(session) {
       const guestId = session.guestId || tempId;
 
       // Связываем гостевой ID с текущим пользователем
-      await db.query(
+      await db.getQuery()(
         `INSERT INTO guest_user_mapping (user_id, guest_id) 
          VALUES ($1, $2) 
          ON CONFLICT (guest_id) DO UPDATE SET user_id = $1`,
@@ -298,9 +308,10 @@ async function initTelegramAuth(session) {
       `[initTelegramAuth] Created verification code for guestId: ${session.guestId || tempId}${session.authenticated ? `, userId: ${session.userId}` : ''}`
     );
 
+    const settings = await getTelegramSettings();
     return {
       verificationCode: code,
-      botLink: `https://t.me/${process.env.TELEGRAM_BOT_USERNAME}`,
+      botLink: `https://t.me/${settings.bot_username}`,
     };
   } catch (error) {
     logger.error('Error initializing Telegram auth:', error);
@@ -308,8 +319,13 @@ async function initTelegramAuth(session) {
   }
 }
 
+function clearSettingsCache() {
+  telegramSettingsCache = null;
+}
+
 module.exports = {
   getBot,
   stopBot,
   initTelegramAuth,
+  clearSettingsCache,
 };
diff --git a/backend/services/verification-service.js b/backend/services/verification-service.js
index 914c586..e309d63 100644
--- a/backend/services/verification-service.js
+++ b/backend/services/verification-service.js
@@ -29,14 +29,14 @@ class VerificationService {
 
       // Если userId не указан, добавляем запись без ссылки на пользователя
       if (userId === null || userId === undefined) {
-        await db.query(
+        await db.getQuery()(
           `INSERT INTO verification_codes 
            (code, provider, provider_id, expires_at) 
            VALUES ($1, $2, $3, $4)`,
           [code, provider, providerId, expiresAt]
         );
       } else {
-        await db.query(
+        await db.getQuery()(
           `INSERT INTO verification_codes 
            (code, provider, provider_id, user_id, expires_at) 
            VALUES ($1, $2, $3, $4, $5)`,
@@ -67,7 +67,7 @@ class VerificationService {
       logger.info(`Normalized code: ${normalizedCode}`);
 
       // Проверим, есть ли такой код в базе (для отладки)
-      const checkResult = await db.query(
+      const checkResult = await db.getQuery()(
         `SELECT code FROM verification_codes 
          WHERE provider = $1 
          AND provider_id = $2 
@@ -84,7 +84,7 @@ class VerificationService {
         logger.warn(`No active codes found for ${provider}:${providerId}`);
       }
 
-      const result = await db.query(
+      const result = await db.getQuery()(
         `SELECT * FROM verification_codes 
          WHERE code = $1 
          AND provider = $2 
@@ -104,7 +104,10 @@ class VerificationService {
       const verification = result.rows[0];
 
       // Отмечаем код как использованный
-      await db.query('UPDATE verification_codes SET used = true WHERE id = $1', [verification.id]);
+      await db.getQuery()(
+        'UPDATE verification_codes SET used = true WHERE id = $1',
+        [verification.id]
+      );
 
       logger.info(`Code verified successfully for ${provider}:${providerId}`);
       return {
@@ -126,7 +129,7 @@ class VerificationService {
   // Очистка истекших кодов
   async cleanupExpiredCodes() {
     try {
-      const result = await db.query(
+      const result = await db.getQuery()(
         'DELETE FROM verification_codes WHERE expires_at <= NOW() RETURNING id'
       );
       logger.info(`Cleaned up ${result.rowCount} expired verification codes`);
diff --git a/backend/utils/helpers.js b/backend/utils/helpers.js
index c74b365..cac5b7c 100644
--- a/backend/utils/helpers.js
+++ b/backend/utils/helpers.js
@@ -21,7 +21,7 @@ function generateVerificationCode(length = 6) {
 
 // Проверка существования идентификатора пользователя
 async function checkUserIdentity(userId, provider, providerId) {
-  const result = await db.query(
+  const result = await db.getQuery()(
     'SELECT * FROM user_identities WHERE user_id = $1 AND provider = $2 AND provider_id = $3',
     [userId, provider, providerId]
   );
@@ -31,7 +31,7 @@ async function checkUserIdentity(userId, provider, providerId) {
 // Добавление новой идентификации
 async function addUserIdentity(userId, provider, providerId) {
   try {
-    await db.query(
+    await db.getQuery()(
       'INSERT INTO user_identities (user_id, provider, provider_id) VALUES ($1, $2, $3)',
       [userId, provider, providerId]
     );
diff --git a/backend/yarn.lock b/backend/yarn.lock
index 546fb98..fa8aae1 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -12,6 +12,11 @@
   resolved "https://registry.yarnpkg.com/@adraffy/ens-normalize/-/ens-normalize-1.11.0.tgz#42cc67c5baa407ac25059fcd7d405cc5ecdb0c33"
   integrity sha512-/3DDPKHqqIqxUULp8yP4zODUY1i+2xvVWsv8A79xGWdCAG+8sb0hRh0Rk2QyOJUnnbyPUAZYcpBuRe3nS2OIUg==
 
+"@anthropic-ai/sdk@^0.51.0":
+  version "0.51.0"
+  resolved "https://registry.yarnpkg.com/@anthropic-ai/sdk/-/sdk-0.51.0.tgz#2cd022c47e0eb6f4d645d8e8ed9ee0f3c5745ea8"
+  integrity sha512-fAFC/uHhyzfw7rs65EPVV+scXDytGNm5BjttxHf6rP/YGvaBRKEvp2lwyuMigTwMI95neeG4bzrZigz7KCikjw==
+
 "@colors/colors@1.5.0":
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/@colors/colors/-/colors-1.5.0.tgz#bb504579c1cae923e6576a4f5da43d25f97bdbd9"
@@ -354,6 +359,16 @@
   resolved "https://registry.yarnpkg.com/@fastify/busboy/-/busboy-2.1.1.tgz#b9da6a878a371829a0502c9b6c1c143ef6663f4d"
   integrity sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==
 
+"@google/genai@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@google/genai/-/genai-1.0.1.tgz#ccef337f733f27fdc2e5bf741af51889e2847082"
+  integrity sha512-qf8sq9vpuKUeBKukAn43z2eC1I/Jw63b9wo6O+1x3EIroF3oDouJOtW1AzwvfO+9gzCPfLjuCUONhMKiBC8vkQ==
+  dependencies:
+    google-auth-library "^9.14.2"
+    ws "^8.18.0"
+    zod "^3.22.4"
+    zod-to-json-schema "^3.22.4"
+
 "@humanfs/core@^0.19.1":
   version "0.19.1"
   resolved "https://registry.yarnpkg.com/@humanfs/core/-/core-0.19.1.tgz#17c55ca7d426733fe3c561906b8173c336b40a77"
@@ -1223,6 +1238,11 @@ agent-base@6:
   dependencies:
     debug "4"
 
+agent-base@^7.1.2:
+  version "7.1.3"
+  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-7.1.3.tgz#29435eb821bc4194633a5b89e5bc4703bafc25a1"
+  integrity sha512-jRR5wdylq8CkOe6hei19GGZnxM6rBGwFl3Bg0YItGDimvjGtAvdZk4Pu6Cl4u4Igsws4a1fd1Vq3ezrhn4KmFw==
+
 agentkeepalive@^4.2.1:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/agentkeepalive/-/agentkeepalive-4.6.0.tgz#35f73e94b3f40bf65f105219c623ad19c136ea6a"
@@ -1504,7 +1524,7 @@ base-x@^3.0.2:
   dependencies:
     safe-buffer "^5.0.1"
 
-base64-js@^1.5.1:
+base64-js@^1.3.0, base64-js@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.5.1.tgz#1b1b440160a5bf7ad40b650f095963481903930a"
   integrity sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==
@@ -1516,6 +1536,11 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
+bignumber.js@^9.0.0:
+  version "9.3.0"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.3.0.tgz#bdba7e2a4c1a2eba08290e8dcad4f36393c92acd"
+  integrity sha512-EM7aMFTXbptt/wZdMlBv2t8IViwQL+h6SLHosp8Yf0dqJMTnY6iL32opnAB6kAdL0SZPuvcAzFr31o0c/R3/RA==
+
 binary-extensions@^2.0.0, binary-extensions@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.3.0.tgz#f6e14a97858d327252200242d4ccfe522c445522"
@@ -1671,6 +1696,11 @@ buffer-alloc@^1.2.0:
     buffer-alloc-unsafe "^1.1.0"
     buffer-fill "^1.0.0"
 
+buffer-equal-constant-time@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz#f8e71132f7ffe6e01a5c9697a4c6f3e48d5cc819"
+  integrity sha512-zRpUiDwd/xk6ADqPMATG8vc9VPrkck7T07OIx0gnjmJAnHnTVXNQG3vfvWNuiZIkwu9KrKdA1iJKfsfTVxE6NA==
+
 buffer-fill@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/buffer-fill/-/buffer-fill-1.0.0.tgz#f8f78b76789888ef39f205cd637f68e702122b2c"
@@ -2309,6 +2339,13 @@ ecc-jsbn@~0.1.1:
     jsbn "~0.1.0"
     safer-buffer "^2.1.0"
 
+ecdsa-sig-formatter@1.0.11, ecdsa-sig-formatter@^1.0.11:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz#ae0f0fa2d85045ef14a817daa3ce9acd0489e5bf"
+  integrity sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==
+  dependencies:
+    safe-buffer "^5.0.1"
+
 ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
@@ -2842,7 +2879,7 @@ express@^4.21.2:
     utils-merge "1.0.1"
     vary "~1.1.2"
 
-extend@~3.0.2:
+extend@^3.0.2, extend@~3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
   integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
@@ -3117,6 +3154,26 @@ functions-have-names@^1.2.3:
   resolved "https://registry.yarnpkg.com/functions-have-names/-/functions-have-names-1.2.3.tgz#0404fe4ee2ba2f607f0e0ec3c80bae994133b834"
   integrity sha512-xckBUXyTIqT97tq2x2AMb+g163b5JFysYk0x4qxNFwbfQkmNZoiRHb6sPzI9/QV33WeuvVYBUIiD4NzNIyqaRQ==
 
+gaxios@^6.0.0, gaxios@^6.1.1:
+  version "6.7.1"
+  resolved "https://registry.yarnpkg.com/gaxios/-/gaxios-6.7.1.tgz#ebd9f7093ede3ba502685e73390248bb5b7f71fb"
+  integrity sha512-LDODD4TMYx7XXdpwxAVRAIAuB0bzv0s+ywFonY46k126qzQHT9ygyoa9tncmOiQmmDrik65UYsEkv3lbfqQ3yQ==
+  dependencies:
+    extend "^3.0.2"
+    https-proxy-agent "^7.0.1"
+    is-stream "^2.0.0"
+    node-fetch "^2.6.9"
+    uuid "^9.0.1"
+
+gcp-metadata@^6.1.0:
+  version "6.1.1"
+  resolved "https://registry.yarnpkg.com/gcp-metadata/-/gcp-metadata-6.1.1.tgz#f65aa69f546bc56e116061d137d3f5f90bdec494"
+  integrity sha512-a4tiq7E0/5fTjxPAaH4jpjkSv/uCaU2p5KC6HVGrvl0cDjA8iBZv4vv1gyzlmK0ZUKqwpOyQMKzZQe3lTit77A==
+  dependencies:
+    gaxios "^6.1.1"
+    google-logging-utils "^0.0.2"
+    json-bigint "^1.0.0"
+
 get-caller-file@^2.0.5:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
@@ -3295,6 +3352,23 @@ globby@^10.0.1:
     merge2 "^1.2.3"
     slash "^3.0.0"
 
+google-auth-library@^9.14.2:
+  version "9.15.1"
+  resolved "https://registry.yarnpkg.com/google-auth-library/-/google-auth-library-9.15.1.tgz#0c5d84ed1890b2375f1cd74f03ac7b806b392928"
+  integrity sha512-Jb6Z0+nvECVz+2lzSMt9u98UsoakXxA2HGHMCxh+so3n90XgYWkq5dur19JAJV7ONiJY22yBTyJB1TSkvPq9Ng==
+  dependencies:
+    base64-js "^1.3.0"
+    ecdsa-sig-formatter "^1.0.11"
+    gaxios "^6.1.1"
+    gcp-metadata "^6.1.0"
+    gtoken "^7.0.0"
+    jws "^4.0.0"
+
+google-logging-utils@^0.0.2:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/google-logging-utils/-/google-logging-utils-0.0.2.tgz#5fd837e06fa334da450433b9e3e1870c1594466a"
+  integrity sha512-NEgUnEcBiP5HrPzufUkBzJOD/Sxsco3rLNo1F1TNf7ieU8ryUzBhqba8r756CjLX7rn3fHl6iLEwPYuqpoKgQQ==
+
 gopd@^1.0.1, gopd@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/gopd/-/gopd-1.2.0.tgz#89f56b8217bdbc8802bd299df6d7f1081d7e51a1"
@@ -3305,6 +3379,14 @@ graceful-fs@^4.1.2, graceful-fs@^4.1.6, graceful-fs@^4.2.0:
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.11.tgz#4183e4e8bf08bb6e05bbb2f7d2e0c8f712ca40e3"
   integrity sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==
 
+gtoken@^7.0.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/gtoken/-/gtoken-7.1.0.tgz#d61b4ebd10132222817f7222b1e6064bd463fc26"
+  integrity sha512-pCcEwRi+TKpMlxAQObHDQ56KawURgyAf6jtIY046fJ5tIv3zDe/LEIubckAO8fj6JnAxLdmWkUfNyulQ2iKdEw==
+  dependencies:
+    gaxios "^6.0.0"
+    jws "^4.0.0"
+
 handlebars@^4.0.1:
   version "4.7.8"
   resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.8.tgz#41c42c18b1be2365439188c77c6afae71c0cd9e9"
@@ -3550,6 +3632,14 @@ https-proxy-agent@^5.0.0:
     agent-base "6"
     debug "4"
 
+https-proxy-agent@^7.0.1:
+  version "7.0.6"
+  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-7.0.6.tgz#da8dfeac7da130b05c2ba4b59c9b6cd66611a6b9"
+  integrity sha512-vK9P5/iUfdl95AI+JVyUuIcVtd4ofvtrOr3HNtM2yxC9bnMbEdp3x01OhQNnjb8IJYi38VlTE3mBXwcfvywuSw==
+  dependencies:
+    agent-base "^7.1.2"
+    debug "4"
+
 humanize-ms@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/humanize-ms/-/humanize-ms-1.2.1.tgz#c46e3159a293f6b896da29316d8b6fe8bb79bbed"
@@ -3951,6 +4041,13 @@ jsbn@~0.1.0:
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
   integrity sha512-UVU9dibq2JcFWxQPA6KCqj5O42VOmAY3zQUfEKxU0KpTGXwNoCjkX1e13eHNvw/xPynt6pU0rZ1htjWTNTSXsg==
 
+json-bigint@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/json-bigint/-/json-bigint-1.0.0.tgz#ae547823ac0cad8398667f8cd9ef4730f5b01ff1"
+  integrity sha512-SiPv/8VpZuWbvLSMtTDU8hEfrZWg/mH/nV/b4o0CYbSxu1UIQPLdwKOCIyLQX+VIPO5vrLX3i8qtqFyhdPSUSQ==
+  dependencies:
+    bignumber.js "^9.0.0"
+
 json-buffer@3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/json-buffer/-/json-buffer-3.0.1.tgz#9338802a30d3b6605fbe0613e094008ca8c05a13"
@@ -4027,6 +4124,23 @@ jsprim@^2.0.2:
     json-schema "0.4.0"
     verror "1.10.0"
 
+jwa@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/jwa/-/jwa-2.0.1.tgz#bf8176d1ad0cd72e0f3f58338595a13e110bc804"
+  integrity sha512-hRF04fqJIP8Abbkq5NKGN0Bbr3JxlQ+qhZufXVr0DvujKy93ZCbXZMHDL4EOtodSbCWxOqR8MS1tXA5hwqCXDg==
+  dependencies:
+    buffer-equal-constant-time "^1.0.1"
+    ecdsa-sig-formatter "1.0.11"
+    safe-buffer "^5.0.1"
+
+jws@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jws/-/jws-4.0.0.tgz#2d4e8cf6a318ffaa12615e9dec7e86e6c97310f4"
+  integrity sha512-KDncfTmOZoOMTFG4mBlG0qUIOlc03fmzH+ru6RgYVZhPkyiy/92Owlt/8UEN+a4TXR1FQetfIpJE8ApdvdVxTg==
+  dependencies:
+    jwa "^2.0.0"
+    safe-buffer "^5.0.1"
+
 keccak@^3.0.0, keccak@^3.0.2:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/keccak/-/keccak-3.0.4.tgz#edc09b89e633c0549da444432ecf062ffadee86d"
@@ -4520,7 +4634,7 @@ node-emoji@^1.10.0:
   dependencies:
     lodash "^4.17.21"
 
-node-fetch@^2.6.7, node-fetch@^2.7.0:
+node-fetch@^2.6.7, node-fetch@^2.6.9, node-fetch@^2.7.0:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.7.0.tgz#d0f0fa6e3e2dc1d27efcd8ad99d550bda94d187d"
   integrity sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==
@@ -4663,6 +4777,19 @@ one-time@^1.0.0:
   dependencies:
     fn.name "1.x.x"
 
+openai@^4.102.0:
+  version "4.102.0"
+  resolved "https://registry.yarnpkg.com/openai/-/openai-4.102.0.tgz#fcf09d2ad2b33eb399fe79bb43df1872bf2a15c8"
+  integrity sha512-CWk15CMhPSHNZnjz+6rwVYV551xaC8CwOd7/zxImrC1btEo37dX/Ii5tBKWfqqxqyzpJ6p3Y4bICzzKhW03WhQ==
+  dependencies:
+    "@types/node" "^18.11.18"
+    "@types/node-fetch" "^2.6.4"
+    abort-controller "^3.0.0"
+    agentkeepalive "^4.2.1"
+    form-data-encoder "1.7.2"
+    formdata-node "^4.3.2"
+    node-fetch "^2.6.7"
+
 openai@^4.93.0:
   version "4.96.0"
   resolved "https://registry.yarnpkg.com/openai/-/openai-4.96.0.tgz#d1a821e99949ac2c55709f4e28e18bb1d9fd8ef9"
@@ -6355,6 +6482,11 @@ uuid@^10.0.0:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-10.0.0.tgz#5a95aa454e6e002725c79055fd42aaba30ca6294"
   integrity sha512-8XkAphELsDnEGrDxUOHB3RGvXz6TeuYSGEZBOjtTtPm2lwhGBjLgOzLHB63IUWfBpNucQjND6d3AOudO+H3RWQ==
 
+uuid@^9.0.1:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-9.0.1.tgz#e188d4c8853cc722220392c424cd637f32293f30"
+  integrity sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==
+
 v8-compile-cache-lib@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz#6336e8d71965cb3d35a1bbb7868445a7c05264bf"
@@ -6595,7 +6727,7 @@ write-file-atomic@3.0.3:
     signal-exit "^3.0.2"
     typedarray-to-buffer "^3.1.5"
 
-ws@8.17.1, ws@8.18.1, ws@^7.4.6, ws@^8.18.1:
+ws@8.17.1, ws@8.18.1, ws@^7.4.6, ws@^8.18.0, ws@^8.18.1:
   version "8.18.1"
   resolved "https://registry.yarnpkg.com/ws/-/ws-8.18.1.tgz#ea131d3784e1dfdff91adb0a4a116b127515e3cb"
   integrity sha512-RKW2aJZMXeMxVpnZ6bck+RswznaxmzdULiBr6KY7XkTnW8uvt0iT9H5DkHUChXrc+uurzwa0rVI16n/Xzjdz1w==
@@ -6653,7 +6785,7 @@ yocto-queue@^0.1.0:
   resolved "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"
   integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==
 
-zod-to-json-schema@^3.22.3, zod-to-json-schema@^3.22.5, zod-to-json-schema@^3.24.1:
+zod-to-json-schema@^3.22.3, zod-to-json-schema@^3.22.4, zod-to-json-schema@^3.22.5, zod-to-json-schema@^3.24.1:
   version "3.24.5"
   resolved "https://registry.yarnpkg.com/zod-to-json-schema/-/zod-to-json-schema-3.24.5.tgz#d1095440b147fb7c2093812a53c54df8d5df50a3"
   integrity sha512-/AuWwMP+YqiPbsJx5D6TfgRTc4kTLjsh5SOcd4bLsfUg2RcEXrFMJl1DGgdHy2aCfsIA/cr/1JM0xcB2GZji8g==
diff --git a/frontend/src/components/Sidebar.vue b/frontend/src/components/Sidebar.vue
index 7e01257..e1d4192 100644
--- a/frontend/src/components/Sidebar.vue
+++ b/frontend/src/components/Sidebar.vue
@@ -142,7 +142,7 @@ const props = defineProps({
   isLoadingTokens: Boolean
 });
 
-const emit = defineEmits(['update:modelValue', 'wallet-auth', 'disconnect-wallet', 'telegram-auth', 'email-auth']);
+const emit = defineEmits(['update:modelValue', 'wallet-auth', 'disconnect-wallet', 'telegram-auth', 'email-auth', 'cancel-email-auth']);
 
 const { deleteIdentity } = useAuth();
 
diff --git a/frontend/src/components/identity/EmailConnect.vue b/frontend/src/components/identity/EmailConnect.vue
index 3344b77..e4023c4 100644
--- a/frontend/src/components/identity/EmailConnect.vue
+++ b/frontend/src/components/identity/EmailConnect.vue
@@ -7,22 +7,22 @@
           <div class="form-step">{{ showVerification ? 'Шаг 2 из 2' : 'Шаг 1 из 2' }}</div>
         </div>
       </div>
-      <div v-if="!showVerification" class="email-form">
+    <div v-if="!showVerification" class="email-form">
         <label for="email-input" class="form-label">Email</label>
         <input id="email-input" v-model="email" type="email" placeholder="Введите email" class="email-input" :disabled="isLoading" autocomplete="email" />
         <div class="form-hint">На этот адрес придёт код подтверждения</div>
         <button type="submit" :disabled="isLoading || !isValidEmail" class="email-btn main-btn">
-          {{ isLoading ? 'Отправка...' : 'Получить код' }}
-        </button>
-      </div>
-      <div v-else class="verification-form">
+        {{ isLoading ? 'Отправка...' : 'Получить код' }}
+      </button>
+    </div>
+    <div v-else class="verification-form">
         <p class="verification-info success-msg">Код отправлен на <b>{{ email }}</b></p>
         <label for="code-input" class="form-label">Код</label>
         <input id="code-input" v-model="code" type="text" placeholder="Введите код из письма" class="code-input" :disabled="isLoading" autocomplete="one-time-code" />
         <div class="form-hint">Проверьте почту и введите код из письма</div>
         <button type="submit" :disabled="isLoading || !code" class="verify-btn main-btn">
-          {{ isLoading ? 'Проверка...' : 'Подтвердить' }}
-        </button>
+        {{ isLoading ? 'Проверка...' : 'Подтвердить' }}
+      </button>
         <button type="button" class="reset-btn link-btn" @click="resetForm" :disabled="isLoading">Изменить email</button>
       </div>
       <div v-if="error" class="error-msg">{{ error }}</div>
@@ -30,74 +30,74 @@
         <slot name="actions">
           <button type="button" class="cancel-btn" @click="$emit('close')" :disabled="isLoading">Отмена</button>
         </slot>
-      </div>
+    </div>
     </form>
   </div>
 </template>
 
 <script setup>
-import { ref, computed } from 'vue';
-import axios from '@/api/axios';
-import { useAuth } from '@/composables/useAuth';
+  import { ref, computed } from 'vue';
+  import axios from '@/api/axios';
+  import { useAuth } from '@/composables/useAuth';
 
 const emit = defineEmits(['close', 'success']);
-const { linkIdentity } = useAuth();
+  const { linkIdentity } = useAuth();
 
-const email = ref('');
-const code = ref('');
-const error = ref('');
-const isLoading = ref(false);
-const showVerification = ref(false);
+  const email = ref('');
+  const code = ref('');
+  const error = ref('');
+  const isLoading = ref(false);
+  const showVerification = ref(false);
 
-const isValidEmail = computed(() => {
-  return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email.value);
-});
+  const isValidEmail = computed(() => {
+    return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email.value);
+  });
 
-const requestCode = async () => {
-  try {
-    isLoading.value = true;
-    error.value = '';
+  const requestCode = async () => {
+    try {
+      isLoading.value = true;
+      error.value = '';
     const response = await axios.post('/api/auth/email/request', {
-      email: email.value,
-    });
-    if (response.data.success) {
-      showVerification.value = true;
-    } else {
-      error.value = response.data.error || 'Ошибка отправки кода';
+        email: email.value,
+      });
+      if (response.data.success) {
+        showVerification.value = true;
+      } else {
+        error.value = response.data.error || 'Ошибка отправки кода';
+      }
+    } catch (err) {
+      error.value = err.response?.data?.error || 'Ошибка отправки кода';
+    } finally {
+      isLoading.value = false;
     }
-  } catch (err) {
-    error.value = err.response?.data?.error || 'Ошибка отправки кода';
-  } finally {
-    isLoading.value = false;
-  }
-};
+  };
 
-const verifyCode = async () => {
-  try {
-    isLoading.value = true;
-    error.value = '';
+  const verifyCode = async () => {
+    try {
+      isLoading.value = true;
+      error.value = '';
     const response = await axios.post('/api/auth/email/verify-code', {
-      email: email.value,
-      code: code.value,
-    });
-    if (response.data.success) {
+        email: email.value,
+        code: code.value,
+      });
+      if (response.data.success) {
       emit('success');
-    } else {
-      error.value = response.data.error || 'Неверный код';
+      } else {
+        error.value = response.data.error || 'Неверный код';
+      }
+    } catch (err) {
+      error.value = err.response?.data?.error || 'Ошибка проверки кода';
+    } finally {
+      isLoading.value = false;
     }
-  } catch (err) {
-    error.value = err.response?.data?.error || 'Ошибка проверки кода';
-  } finally {
-    isLoading.value = false;
-  }
-};
+  };
 
-const resetForm = () => {
-  email.value = '';
-  code.value = '';
-  error.value = '';
-  showVerification.value = false;
-};
+  const resetForm = () => {
+    email.value = '';
+    code.value = '';
+    error.value = '';
+    showVerification.value = false;
+  };
 </script>
 
 <style scoped>
diff --git a/frontend/src/composables/useAuth.js b/frontend/src/composables/useAuth.js
index dfd94dc..78d5cb7 100644
--- a/frontend/src/composables/useAuth.js
+++ b/frontend/src/composables/useAuth.js
@@ -427,48 +427,16 @@ export function useAuth() {
 
   /**
    * Связывает новый идентификатор с текущим аккаунтом пользователя
-   * @param {string} provider - Тип идентификатора (wallet, email, telegram)
-   * @param {string} providerId - Значение идентификатора
+   * @param {string} type - Тип идентификатора (wallet, email, telegram)
+   * @param {string} value - Значение идентификатора
    * @returns {Promise<Object>} - Результат операции
    */
-  const linkIdentity = async (provider, providerId) => {
-    try {
-      if (!isAuthenticated.value) {
-        console.error('Невозможно связать идентификатор: пользователь не аутентифицирован');
-        return { success: false, error: 'Пользователь не аутентифицирован' };
-      }
-
-      const response = await axios.post('/api/auth/identities/link', {
-        type: provider,
-        value: providerId,
-      });
-
-      if (response.data.success) {
-        // Обновляем локальные данные при необходимости
-        if (provider === 'wallet') {
-          address.value = providerId;
-          isAdmin.value = response.data.isAdmin || false;
-        } else if (provider === 'telegram') {
-          telegramId.value = providerId;
-        } else if (provider === 'email') {
-          email.value = providerId;
-        }
-
-        // Обновляем список идентификаторов
-        await updateIdentities();
-
-        console.log(`Идентификатор ${provider} успешно связан с аккаунтом`);
-        return { success: true };
-      }
-
-      return response.data;
-    } catch (error) {
-      console.error('Ошибка при связывании идентификатора:', error);
-      return {
-        success: false,
-        error: error.response?.data?.error || error.message,
-      };
-    }
+  const linkIdentity = async (type, value) => {
+    const response = await axios.post('/api/link', {
+      type,
+      value,
+    });
+    return response.data;
   };
 
   /**
@@ -478,16 +446,8 @@ export function useAuth() {
    * @returns {Promise<Object>} - Результат операции
    */
   const deleteIdentity = async (provider, providerId) => {
-    try {
-      const response = await axios.delete(`/api/identities/${provider}/${encodeURIComponent(providerId)}`);
-      if (response.data.success) {
-        await updateIdentities();
-        return { success: true };
-      }
-      return { success: false, error: response.data.error };
-    } catch (error) {
-      return { success: false, error: error.response?.data?.error || error.message };
-    }
+    const response = await axios.delete(`/api/${provider}/${encodeURIComponent(providerId)}`);
+    return response.data;
   };
 
   return {
diff --git a/frontend/src/views/settings/AIProviderSettings.vue b/frontend/src/views/settings/AIProviderSettings.vue
new file mode 100644
index 0000000..8823c1f
--- /dev/null
+++ b/frontend/src/views/settings/AIProviderSettings.vue
@@ -0,0 +1,203 @@
+<template>
+  <div class="ai-provider-settings settings-panel">
+    <h2>{{ label }}</h2>
+    <p class="desc">{{ description }}</p>
+    <form @submit.prevent="onSave">
+      <div v-if="showApiKey">
+        <label>API Key:</label>
+        <input type="password" v-model="apiKey" :placeholder="apiKeyPlaceholder" />
+        <button type="button" class="verify-btn" @click="onVerify" :disabled="verifying">Verify</button>
+        <span v-if="verifyStatus === true" class="ok">✔️</span>
+        <span v-if="verifyStatus === false" class="error">Ошибка: {{ verifyError }}</span>
+      </div>
+      <div v-if="showBaseUrl">
+        <label>Base URL:</label>
+        <input type="text" v-model="baseUrl" :placeholder="baseUrlPlaceholder" />
+      </div>
+      <div v-if="models.length">
+        <label>Модель:</label>
+        <select v-model="selectedModel">
+          <option v-for="model in models" :key="model.id || model" :value="model.id || model">
+            {{ model.id || model }}
+          </option>
+        </select>
+      </div>
+      <div class="actions">
+        <button type="submit" :disabled="saving">Сохранить</button>
+        <button type="button" @click="onDelete" v-if="hasSettings">Удалить ключ</button>
+        <button type="button" @click="$emit('cancel')">Закрыть</button>
+      </div>
+      <div v-if="saveStatus === true" class="ok">Сохранено!</div>
+      <div v-if="saveStatus === false" class="error">Ошибка: {{ saveError }}</div>
+    </form>
+  </div>
+</template>
+
+<script setup>
+import { ref, onMounted, watch } from 'vue';
+import axios from 'axios';
+const props = defineProps({
+  provider: { type: String, required: true },
+  label: { type: String, required: true },
+  description: { type: String, default: '' },
+  showApiKey: { type: Boolean, default: true },
+  showBaseUrl: { type: Boolean, default: true },
+  apiKeyPlaceholder: { type: String, default: '' },
+  baseUrlPlaceholder: { type: String, default: '' },
+});
+
+const apiKey = ref('');
+const baseUrl = ref('');
+const selectedModel = ref('');
+const models = ref([]);
+const hasSettings = ref(false);
+const verifying = ref(false);
+const verifyStatus = ref(null);
+const verifyError = ref('');
+const saving = ref(false);
+const saveStatus = ref(null);
+const saveError = ref('');
+
+async function loadSettings() {
+  try {
+    const { data } = await axios.get(`/api/settings/ai-settings/${props.provider}`);
+    if (data.settings) {
+      apiKey.value = data.settings.api_key || '';
+      baseUrl.value = data.settings.base_url || '';
+      selectedModel.value = data.settings.selected_model || '';
+      hasSettings.value = true;
+      if (apiKey.value || props.provider === 'ollama') {
+        await loadModels();
+      }
+    } else {
+      hasSettings.value = false;
+    }
+  } catch (e) {
+    hasSettings.value = false;
+  }
+}
+
+async function loadModels() {
+  try {
+    const { data } = await axios.get(`/api/settings/ai-settings/${props.provider}/models`);
+    models.value = data.models || [];
+    if (!selectedModel.value && models.value.length) {
+      selectedModel.value = models.value[0].id || models.value[0];
+    }
+  } catch (e) {
+    models.value = [];
+  }
+}
+
+async function onVerify() {
+  verifying.value = true;
+  verifyStatus.value = null;
+  verifyError.value = '';
+  try {
+    const { data } = await axios.post(`/api/settings/ai-settings/${props.provider}/verify`, {
+      api_key: apiKey.value,
+      base_url: baseUrl.value,
+    });
+    verifyStatus.value = data.success;
+    if (data.success) {
+      await loadModels();
+    }
+  } catch (e) {
+    verifyStatus.value = false;
+    verifyError.value = e.response?.data?.error || e.message;
+  } finally {
+    verifying.value = false;
+  }
+}
+
+async function onSave() {
+  saving.value = true;
+  saveStatus.value = null;
+  saveError.value = '';
+  try {
+    await axios.put(`/api/settings/ai-settings/${props.provider}`, {
+      api_key: apiKey.value,
+      base_url: baseUrl.value,
+      selected_model: selectedModel.value,
+    });
+    saveStatus.value = true;
+    hasSettings.value = true;
+  } catch (e) {
+    saveStatus.value = false;
+    saveError.value = e.response?.data?.error || e.message;
+  } finally {
+    saving.value = false;
+  }
+}
+
+async function onDelete() {
+  await axios.delete(`/api/settings/ai-settings/${props.provider}`);
+  apiKey.value = '';
+  baseUrl.value = '';
+  selectedModel.value = '';
+  models.value = [];
+  hasSettings.value = false;
+}
+
+onMounted(loadSettings);
+watch([apiKey, baseUrl], () => {
+  verifyStatus.value = null;
+  verifyError.value = '';
+  saveStatus.value = null;
+  saveError.value = '';
+});
+</script>
+
+<style scoped>
+.ai-provider-settings.settings-panel {
+  padding: var(--block-padding);
+  background-color: var(--color-light);
+  border-radius: var(--radius-md);
+  margin-top: var(--spacing-lg);
+  max-width: 500px;
+}
+.desc {
+  color: #666;
+  margin-bottom: 1rem;
+}
+label {
+  display: block;
+  margin-bottom: 0.3rem;
+  font-weight: 500;
+}
+input[type="password"], input[type="text"], select {
+  width: 100%;
+  padding: 0.5rem 1rem;
+  border-radius: 6px;
+  border: 1px solid #ccc;
+  font-size: 1rem;
+  margin-bottom: 1rem;
+}
+.verify-btn {
+  margin-left: 0.5rem;
+  background: var(--color-primary);
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  padding: 0.4rem 1.2rem;
+  cursor: pointer;
+  font-size: 1rem;
+  transition: background 0.2s;
+}
+.verify-btn:hover {
+  background: var(--color-primary-dark);
+}
+.actions {
+  display: flex;
+  gap: 1rem;
+  margin-top: 1.5rem;
+}
+.ok {
+  color: #2cae4f;
+  margin-left: 1rem;
+}
+.error {
+  color: #d32f2f;
+  margin-left: 1rem;
+}
+</style> 
\ No newline at end of file
diff --git a/frontend/src/views/settings/AiSettingsView.vue b/frontend/src/views/settings/AiSettingsView.vue
index 9df1557..829d005 100644
--- a/frontend/src/views/settings/AiSettingsView.vue
+++ b/frontend/src/views/settings/AiSettingsView.vue
@@ -1,26 +1,97 @@
 <template>
   <div class="ai-settings settings-panel">
     <h2>Интеграции</h2>
-    <div class="integration-blocks">
+    <div class="integration-blocks" v-if="!showProvider && !showEmailSettings && !showTelegramSettings">
+      <div class="integration-block">
+        <h3>OpenAI</h3>
+        <p>Интеграция с OpenAI (GPT-4, GPT-3.5 и др.).</p>
+        <button class="details-btn" @click="showProvider = 'openai'">Подробнее</button>
+      </div>
+      <div class="integration-block">
+        <h3>Anthropic</h3>
+        <p>Интеграция с Anthropic Claude (Claude 3 и др.).</p>
+        <button class="details-btn" @click="showProvider = 'anthropic'">Подробнее</button>
+      </div>
+      <div class="integration-block">
+        <h3>Google Gemini</h3>
+        <p>Интеграция с Google Gemini (Gemini 1.5, 1.0 и др.).</p>
+        <button class="details-btn" @click="showProvider = 'google'">Подробнее</button>
+      </div>
+      <div class="integration-block">
+        <h3>Ollama</h3>
+        <p>Локальные open-source модели через Ollama.</p>
+        <button class="details-btn" @click="showProvider = 'ollama'">Подробнее</button>
+      </div>
       <div class="integration-block">
         <h3>Telegram</h3>
         <p>Интеграция с Telegram-ботом для уведомлений и авторизации.</p>
-        <button class="details-btn" @click="goToTelegram">Подробнее</button>
+        <button class="details-btn" @click="showTelegramSettings = true">Подробнее</button>
       </div>
       <div class="integration-block">
         <h3>Email</h3>
         <p>Интеграция с Email для отправки писем и уведомлений.</p>
-        <button class="details-btn" @click="goToEmail">Подробнее</button>
+        <button class="details-btn" @click="showEmailSettings = true">Подробнее</button>
       </div>
     </div>
+    <AIProviderSettings
+      v-if="showProvider"
+      :provider="showProvider"
+      :label="providerLabels[showProvider].label"
+      :description="providerLabels[showProvider].description"
+      :apiKeyPlaceholder="providerLabels[showProvider].apiKeyPlaceholder"
+      :baseUrlPlaceholder="providerLabels[showProvider].baseUrlPlaceholder"
+      :showApiKey="providerLabels[showProvider].showApiKey"
+      :showBaseUrl="providerLabels[showProvider].showBaseUrl"
+      @cancel="showProvider = null"
+    />
+    <TelegramSettingsView v-if="showTelegramSettings" @cancel="showTelegramSettings = false" />
+    <EmailSettingsView v-if="showEmailSettings" @cancel="showEmailSettings = false" />
   </div>
 </template>
 
 <script setup>
-import { useRouter } from 'vue-router';
-const router = useRouter();
-const goToTelegram = () => router.push({ name: 'settings-telegram' });
-const goToEmail = () => router.push({ name: 'settings-email' });
+import { ref } from 'vue';
+import AIProviderSettings from './AIProviderSettings.vue';
+import TelegramSettingsView from './TelegramSettingsView.vue';
+import EmailSettingsView from './EmailSettingsView.vue';
+const showProvider = ref(null);
+const showTelegramSettings = ref(false);
+const showEmailSettings = ref(false);
+
+const providerLabels = {
+  openai: {
+    label: 'OpenAI API Key',
+    description: 'Введите OpenAI API Key и (опционально) Base URL для кастомных endpoint.',
+    apiKeyPlaceholder: 'sk-...',
+    baseUrlPlaceholder: 'https://api.openai.com/v1',
+    showApiKey: true,
+    showBaseUrl: true,
+  },
+  anthropic: {
+    label: 'Anthropic API Key',
+    description: 'Введите Anthropic API Key и (опционально) Base URL.',
+    apiKeyPlaceholder: '...',
+    baseUrlPlaceholder: 'https://api.anthropic.com/v1',
+    showApiKey: true,
+    showBaseUrl: true,
+  },
+  google: {
+    label: 'Google Gemini API Key',
+    description: 'Введите Google Gemini API Key и (опционально) Base URL.',
+    apiKeyPlaceholder: '...',
+    baseUrlPlaceholder: 'https://generativelanguage.googleapis.com/v1beta',
+    showApiKey: true,
+    showBaseUrl: true,
+  },
+  ollama: {
+    label: 'Ollama (локальные модели)',
+    description: 'Настройка Ollama для локальных open-source моделей. Ключ не требуется.',
+    apiKeyPlaceholder: '',
+    baseUrlPlaceholder: 'http://localhost:11434',
+    showApiKey: false,
+    showBaseUrl: true,
+  },
+};
 </script>
 
 <style scoped>
diff --git a/frontend/src/views/settings/DatabaseSettingsView.vue b/frontend/src/views/settings/DatabaseSettingsView.vue
new file mode 100644
index 0000000..4ecd60c
--- /dev/null
+++ b/frontend/src/views/settings/DatabaseSettingsView.vue
@@ -0,0 +1,171 @@
+<template>
+  <div class="db-settings settings-panel">
+    <h2>Настройки базы данных</h2>
+    <form v-if="editMode" @submit.prevent="saveDbSettings" class="settings-form">
+      <div class="form-group">
+        <label for="dbHost">Host</label>
+        <input id="dbHost" v-model="form.dbHost" type="text" required />
+      </div>
+      <div class="form-group">
+        <label for="dbPort">Port</label>
+        <input id="dbPort" v-model.number="form.dbPort" type="number" required />
+      </div>
+      <div class="form-group">
+        <label for="dbName">Database</label>
+        <input id="dbName" v-model="form.dbName" type="text" required />
+      </div>
+      <div class="form-group">
+        <label for="dbUser">User</label>
+        <input id="dbUser" v-model="form.dbUser" type="text" required />
+      </div>
+      <div class="form-group">
+        <label for="dbPassword">Password</label>
+        <input id="dbPassword" v-model="form.dbPassword" type="password" :placeholder="form.dbPassword ? 'Изменить пароль' : 'Введите пароль'" />
+      </div>
+      <button type="submit" class="save-btn">Сохранить</button>
+      <button type="button" class="cancel-btn" @click="cancelEdit">Отмена</button>
+    </form>
+    <div v-else class="settings-view">
+      <div class="view-row"><span>Host:</span> <b>{{ form.dbHost }}</b></div>
+      <div class="view-row"><span>Port:</span> <b>{{ form.dbPort }}</b></div>
+      <div class="view-row"><span>Database:</span> <b>{{ form.dbName }}</b></div>
+      <div class="view-row"><span>User:</span> <b>{{ form.dbUser }}</b></div>
+      <div class="view-row"><span>Password:</span> <b>••••••••••••••••••••••••••••••••</b></div>
+      <button type="button" class="edit-btn" @click="editMode = true">Изменить</button>
+      <button type="button" class="cancel-btn" @click="$emit('cancel')">Закрыть</button>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { reactive, ref, onMounted } from 'vue';
+import api from '@/api/axios';
+
+const form = reactive({
+  dbHost: '',
+  dbPort: 5432,
+  dbName: '',
+  dbUser: '',
+  dbPassword: ''
+});
+const original = reactive({});
+const editMode = ref(false);
+
+const loadDbSettings = async () => {
+  try {
+    const res = await api.get('/api/db-settings');
+    if (res.data.success) {
+      const s = res.data.settings;
+      form.dbHost = s.db_host;
+      form.dbPort = s.db_port;
+      form.dbName = s.db_name;
+      form.dbUser = s.db_user;
+      form.dbPassword = '';
+      Object.assign(original, JSON.parse(JSON.stringify(form)));
+    }
+  } catch (e) {
+    // обработка ошибки
+  }
+};
+
+onMounted(async () => {
+  await loadDbSettings();
+  editMode.value = false;
+});
+
+const saveDbSettings = async () => {
+  try {
+    await api.put('/api/db-settings', {
+      db_host: form.dbHost,
+      db_port: form.dbPort,
+      db_name: form.dbName,
+      db_user: form.dbUser,
+      db_password: form.dbPassword || undefined
+    });
+    alert('Настройки базы данных сохранены');
+    form.dbPassword = '';
+    Object.assign(original, JSON.parse(JSON.stringify(form)));
+    editMode.value = false;
+  } catch (e) {
+    alert('Ошибка сохранения настроек базы данных');
+  }
+};
+
+const cancelEdit = () => {
+  Object.assign(form, JSON.parse(JSON.stringify(original)));
+  form.dbPassword = '';
+  editMode.value = false;
+};
+</script>
+
+<style scoped>
+.settings-panel {
+  padding: var(--block-padding);
+  background-color: var(--color-light);
+  border-radius: var(--radius-md);
+  margin-top: var(--spacing-lg);
+  max-width: 500px;
+}
+.settings-form {
+  display: flex;
+  flex-direction: column;
+  gap: 1.5rem;
+}
+.form-group {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+.save-btn {
+  background: var(--color-primary);
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  transition: background 0.2s;
+}
+.save-btn:hover {
+  background: var(--color-primary-dark);
+}
+.cancel-btn {
+  background: #eee;
+  color: #333;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  margin-left: 1rem;
+}
+.settings-view {
+  display: flex;
+  flex-direction: column;
+  gap: 1.2rem;
+}
+.view-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  font-size: 1rem;
+  background: #f8f8f8;
+  border-radius: 4px;
+  padding: 0.5rem 1rem;
+}
+.edit-btn {
+  background: var(--color-primary);
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  align-self: flex-end;
+  margin-top: 1.5rem;
+  transition: background 0.2s;
+}
+.edit-btn:hover {
+  background: var(--color-primary-dark);
+}
+</style> 
\ No newline at end of file
diff --git a/frontend/src/views/settings/EmailSettingsView.vue b/frontend/src/views/settings/EmailSettingsView.vue
index f30f925..cd9d90b 100644
--- a/frontend/src/views/settings/EmailSettingsView.vue
+++ b/frontend/src/views/settings/EmailSettingsView.vue
@@ -1,40 +1,115 @@
 <template>
   <div class="email-settings settings-panel">
     <h2>Настройки Email</h2>
-    <form @submit.prevent="saveEmailSettings" class="settings-form">
+    <form v-if="editMode" @submit.prevent="saveEmailSettings" class="settings-form">
       <div class="form-group">
         <label for="smtpHost">SMTP Host</label>
         <input id="smtpHost" v-model="form.smtpHost" type="text" required />
       </div>
+      <div class="form-group">
+        <label for="smtpPort">SMTP Port</label>
+        <input id="smtpPort" v-model.number="form.smtpPort" type="number" required />
+      </div>
       <div class="form-group">
         <label for="smtpUser">SMTP User</label>
         <input id="smtpUser" v-model="form.smtpUser" type="text" required />
       </div>
       <div class="form-group">
         <label for="smtpPassword">SMTP Password</label>
-        <input id="smtpPassword" v-model="form.smtpPassword" type="password" required />
+        <input id="smtpPassword" v-model="form.smtpPassword" type="password" :placeholder="form.smtpPassword ? 'Изменить пароль' : 'Введите пароль'" />
+      </div>
+      <div class="form-group">
+        <label for="imapHost">IMAP Host</label>
+        <input id="imapHost" v-model="form.imapHost" type="text" required />
+      </div>
+      <div class="form-group">
+        <label for="imapPort">IMAP Port</label>
+        <input id="imapPort" v-model.number="form.imapPort" type="number" required />
       </div>
       <div class="form-group">
         <label for="fromEmail">From Email</label>
         <input id="fromEmail" v-model="form.fromEmail" type="email" required />
       </div>
       <button type="submit" class="save-btn">Сохранить</button>
+      <button type="button" class="cancel-btn" @click="cancelEdit">Отмена</button>
     </form>
+    <div v-else class="settings-view">
+      <div class="view-row"><span>SMTP Host:</span> <b>{{ form.smtpHost }}</b></div>
+      <div class="view-row"><span>SMTP Port:</span> <b>{{ form.smtpPort }}</b></div>
+      <div class="view-row"><span>SMTP User:</span> <b>{{ form.smtpUser }}</b></div>
+      <div class="view-row"><span>IMAP Host:</span> <b>{{ form.imapHost }}</b></div>
+      <div class="view-row"><span>IMAP Port:</span> <b>{{ form.imapPort }}</b></div>
+      <div class="view-row"><span>From Email:</span> <b>{{ form.fromEmail }}</b></div>
+      <button type="button" class="edit-btn" @click="editMode = true">Изменить</button>
+      <button type="button" class="cancel-btn" @click="$emit('cancel')">Закрыть</button>
+    </div>
   </div>
 </template>
 
 <script setup>
-import { reactive } from 'vue';
-// TODO: Импортировать API для сохранения
+import { reactive, ref, onMounted } from 'vue';
+import api from '@/api/axios';
+
 const form = reactive({
   smtpHost: '',
+  smtpPort: 465,
   smtpUser: '',
   smtpPassword: '',
+  imapHost: '',
+  imapPort: 993,
   fromEmail: ''
 });
+const original = reactive({});
+const editMode = ref(false);
+
+const loadEmailSettings = async () => {
+  try {
+    const res = await api.get('/api/email-settings');
+    if (res.data.success) {
+      const s = res.data.settings;
+      form.smtpHost = s.smtp_host;
+      form.smtpPort = s.smtp_port;
+      form.smtpUser = s.smtp_user;
+      form.imapHost = s.imap_host || '';
+      form.imapPort = s.imap_port || 993;
+      form.fromEmail = s.from_email;
+      form.smtpPassword = '';
+      Object.assign(original, JSON.parse(JSON.stringify(form)));
+    }
+  } catch (e) {
+    // обработка ошибки
+  }
+};
+
+onMounted(async () => {
+  await loadEmailSettings();
+  editMode.value = false;
+});
+
 const saveEmailSettings = async () => {
-  // TODO: Реализовать вызов API для сохранения
-  alert('Настройки Email сохранены (заглушка)');
+  try {
+    await api.put('/api/email-settings', {
+      smtp_host: form.smtpHost,
+      smtp_port: form.smtpPort,
+      smtp_user: form.smtpUser,
+      smtp_password: form.smtpPassword || undefined,
+      imap_host: form.imapHost,
+      imap_port: form.imapPort,
+      from_email: form.fromEmail
+    });
+    alert('Настройки Email сохранены');
+    form.smtpPassword = '';
+    Object.assign(original, JSON.parse(JSON.stringify(form)));
+    editMode.value = false;
+  } catch (e) {
+    alert('Ошибка сохранения email-настроек');
+  }
+};
+
+const cancelEdit = () => {
+  Object.assign(form, JSON.parse(JSON.stringify(original)));
+  form.smtpPassword = '';
+  editMode.value = false;
 };
 </script>
 
@@ -69,4 +144,43 @@ const saveEmailSettings = async () => {
 .save-btn:hover {
   background: var(--color-primary-dark);
 }
+.cancel-btn {
+  background: #eee;
+  color: #333;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  margin-left: 1rem;
+}
+.settings-view {
+  display: flex;
+  flex-direction: column;
+  gap: 1.2rem;
+}
+.view-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  font-size: 1rem;
+  background: #f8f8f8;
+  border-radius: 4px;
+  padding: 0.5rem 1rem;
+}
+.edit-btn {
+  background: var(--color-primary);
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  align-self: flex-end;
+  margin-top: 1.5rem;
+  transition: background 0.2s;
+}
+.edit-btn:hover {
+  background: var(--color-primary-dark);
+}
 </style> 
\ No newline at end of file
diff --git a/frontend/src/views/settings/OllamaSettingsView.vue b/frontend/src/views/settings/OllamaSettingsView.vue
new file mode 100644
index 0000000..5574879
--- /dev/null
+++ b/frontend/src/views/settings/OllamaSettingsView.vue
@@ -0,0 +1,63 @@
+<template>
+  <div class="ollama-settings settings-panel">
+    <h2>Настройки Ollama</h2>
+    <div class="current-model-block">
+      <span>Текущая модель:</span>
+      <b>{{ currentModel }}</b>
+    </div>
+    <div class="select-model-block">
+      <label for="ollamaModel">Доступные модели для загрузки:</label>
+      <select id="ollamaModel" v-model="selectedModel">
+        <option v-for="model in availableModels" :key="model" :value="model">{{ model }}</option>
+      </select>
+    </div>
+    <button class="close-btn" @click="$emit('cancel')">Закрыть</button>
+  </div>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue';
+// TODO: заменить на реальный API Ollama
+const currentModel = ref('qwen2.5');
+const availableModels = ref(['qwen2.5', 'llama3', 'mistral', 'phi3', 'gemma']);
+const selectedModel = ref(currentModel.value);
+
+onMounted(() => {
+  // Здесь будет запрос к Ollama для получения списка моделей и текущей
+});
+</script>
+
+<style scoped>
+.ollama-settings.settings-panel {
+  padding: var(--block-padding);
+  background-color: var(--color-light);
+  border-radius: var(--radius-md);
+  margin-top: var(--spacing-lg);
+  max-width: 500px;
+}
+.current-model-block {
+  margin-bottom: 1.5rem;
+  font-size: 1.1rem;
+}
+.select-model-block {
+  margin-bottom: 2rem;
+}
+select {
+  padding: 0.5rem 1rem;
+  border-radius: 6px;
+  border: 1px solid #ccc;
+  font-size: 1rem;
+}
+.close-btn {
+  background: #eee;
+  color: #333;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+}
+.close-btn:hover {
+  background: #ddd;
+}
+</style> 
\ No newline at end of file
diff --git a/frontend/src/views/settings/TelegramSettingsView.vue b/frontend/src/views/settings/TelegramSettingsView.vue
index ed61063..b31ff25 100644
--- a/frontend/src/views/settings/TelegramSettingsView.vue
+++ b/frontend/src/views/settings/TelegramSettingsView.vue
@@ -1,7 +1,7 @@
 <template>
   <div class="telegram-settings settings-panel">
     <h2>Настройки Telegram</h2>
-    <form @submit.prevent="saveTelegramSettings" class="settings-form">
+    <form v-if="editMode" @submit.prevent="saveTelegramSettings" class="settings-form">
       <div class="form-group">
         <label for="botToken">Bot Token</label>
         <input id="botToken" v-model="form.botToken" type="text" required />
@@ -11,20 +11,66 @@
         <input id="botUsername" v-model="form.botUsername" type="text" required />
       </div>
       <button type="submit" class="save-btn">Сохранить</button>
+      <button type="button" class="cancel-btn" @click="cancelEdit">Отмена</button>
     </form>
+    <div v-else class="settings-view">
+      <div class="view-row"><span>Bot Token:</span> <b>••••••••••••••••••••••••••••••••</b></div>
+      <div class="view-row"><span>Bot Username:</span> <b>{{ form.botUsername }}</b></div>
+      <button type="button" class="edit-btn" @click="editMode = true">Изменить</button>
+      <button type="button" class="cancel-btn" @click="$emit('cancel')">Закрыть</button>
+    </div>
   </div>
 </template>
 
 <script setup>
-import { reactive } from 'vue';
-// TODO: Импортировать API для сохранения
+import { reactive, ref, onMounted } from 'vue';
+import api from '@/api/axios';
+
 const form = reactive({
   botToken: '',
   botUsername: ''
 });
+const original = reactive({});
+const editMode = ref(false);
+
+const loadTelegramSettings = async () => {
+  try {
+    const res = await api.get('/api/telegram-settings');
+    if (res.data.success) {
+      const s = res.data.settings;
+      form.botToken = '';
+      form.botUsername = s.bot_username;
+      Object.assign(original, JSON.parse(JSON.stringify(form)));
+    }
+  } catch (e) {
+    // обработка ошибки
+  }
+};
+
+onMounted(async () => {
+  await loadTelegramSettings();
+  editMode.value = false;
+});
+
 const saveTelegramSettings = async () => {
-  // TODO: Реализовать вызов API для сохранения
-  alert('Настройки Telegram сохранены (заглушка)');
+  try {
+    await api.put('/api/telegram-settings', {
+      bot_token: form.botToken,
+      bot_username: form.botUsername
+    });
+    alert('Настройки Telegram сохранены');
+    form.botToken = '';
+    Object.assign(original, JSON.parse(JSON.stringify(form)));
+    editMode.value = false;
+  } catch (e) {
+    alert('Ошибка сохранения telegram-настроек');
+  }
+};
+
+const cancelEdit = () => {
+  Object.assign(form, JSON.parse(JSON.stringify(original)));
+  form.botToken = '';
+  editMode.value = false;
 };
 </script>
 
@@ -59,4 +105,43 @@ const saveTelegramSettings = async () => {
 .save-btn:hover {
   background: var(--color-primary-dark);
 }
+.cancel-btn {
+  background: #eee;
+  color: #333;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  margin-left: 1rem;
+}
+.settings-view {
+  display: flex;
+  flex-direction: column;
+  gap: 1.2rem;
+}
+.view-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  font-size: 1rem;
+  background: #f8f8f8;
+  border-radius: 4px;
+  padding: 0.5rem 1rem;
+}
+.edit-btn {
+  background: var(--color-primary);
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1.5rem;
+  cursor: pointer;
+  font-size: 1rem;
+  align-self: flex-end;
+  margin-top: 1.5rem;
+  transition: background 0.2s;
+}
+.edit-btn:hover {
+  background: var(--color-primary-dark);
+}
 </style> 
\ No newline at end of file