feat: Переделка Telegram интеграции на единого бота (v2.1.0)

- Единый бот для всех пользователей (токен из .env)
- Deep link для подключения через /start команду
- Отдельная таблица todoist_integrations для Todoist webhook
- Персональные отчеты для каждого пользователя
- Автоматическое применение миграции 012 при старте
- Обновлен Frontend: кнопка подключения вместо поля ввода токена

play-life-backend/migrations/012_refactor_telegram_single_bot.sql

@@ -0,0 +1,103 @@
+-- Migration: Refactor telegram_integrations for single shared bot
+-- and move Todoist webhook_token to separate table
+
+-- ============================================
+-- 1. Создаем таблицу todoist_integrations
+-- ============================================
+CREATE TABLE IF NOT EXISTS todoist_integrations (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    webhook_token VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT todoist_integrations_user_id_unique UNIQUE (user_id)
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_todoist_integrations_webhook_token 
+ON todoist_integrations(webhook_token);
+
+CREATE INDEX IF NOT EXISTS idx_todoist_integrations_user_id 
+ON todoist_integrations(user_id);
+
+COMMENT ON TABLE todoist_integrations IS 'Todoist webhook integration settings per user';
+COMMENT ON COLUMN todoist_integrations.webhook_token IS 'Unique token for Todoist webhook URL';
+
+-- ============================================
+-- 2. Мигрируем webhook_token из telegram_integrations в todoist_integrations
+-- ============================================
+INSERT INTO todoist_integrations (user_id, webhook_token, created_at, updated_at)
+SELECT user_id, webhook_token, COALESCE(created_at, CURRENT_TIMESTAMP), CURRENT_TIMESTAMP
+FROM telegram_integrations
+WHERE webhook_token IS NOT NULL 
+  AND webhook_token != ''
+  AND user_id IS NOT NULL
+ON CONFLICT (user_id) DO NOTHING;
+
+-- ============================================
+-- 3. Модифицируем telegram_integrations
+-- ============================================
+
+-- Удаляем bot_token (будет в .env)
+ALTER TABLE telegram_integrations 
+DROP COLUMN IF EXISTS bot_token;
+
+-- Удаляем webhook_token (перенесли в todoist_integrations)
+ALTER TABLE telegram_integrations 
+DROP COLUMN IF EXISTS webhook_token;
+
+-- Добавляем telegram_user_id
+ALTER TABLE telegram_integrations 
+ADD COLUMN IF NOT EXISTS telegram_user_id BIGINT;
+
+-- Добавляем start_token для deep links
+ALTER TABLE telegram_integrations 
+ADD COLUMN IF NOT EXISTS start_token VARCHAR(255);
+
+-- Добавляем timestamps если их нет
+ALTER TABLE telegram_integrations 
+ADD COLUMN IF NOT EXISTS created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP;
+
+ALTER TABLE telegram_integrations 
+ADD COLUMN IF NOT EXISTS updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP;
+
+-- ============================================
+-- 4. Создаем индексы
+-- ============================================
+CREATE UNIQUE INDEX IF NOT EXISTS idx_telegram_integrations_start_token 
+ON telegram_integrations(start_token) 
+WHERE start_token IS NOT NULL;
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_telegram_integrations_telegram_user_id 
+ON telegram_integrations(telegram_user_id) 
+WHERE telegram_user_id IS NOT NULL;
+
+-- Уникальность user_id
+DROP INDEX IF EXISTS idx_telegram_integrations_user_id;
+CREATE UNIQUE INDEX IF NOT EXISTS idx_telegram_integrations_user_id_unique 
+ON telegram_integrations(user_id) 
+WHERE user_id IS NOT NULL;
+
+-- Индекс для поиска по chat_id
+CREATE INDEX IF NOT EXISTS idx_telegram_integrations_chat_id 
+ON telegram_integrations(chat_id) 
+WHERE chat_id IS NOT NULL;
+
+-- Удаляем старый индекс webhook_token
+DROP INDEX IF EXISTS idx_telegram_integrations_webhook_token;
+
+-- ============================================
+-- 5. Очищаем данные Telegram для переподключения
+-- ============================================
+UPDATE telegram_integrations 
+SET chat_id = NULL, 
+    telegram_user_id = NULL,
+    start_token = NULL,
+    updated_at = CURRENT_TIMESTAMP;
+
+-- ============================================
+-- Комментарии
+-- ============================================
+COMMENT ON COLUMN telegram_integrations.telegram_user_id IS 'Telegram user ID (message.from.id)';
+COMMENT ON COLUMN telegram_integrations.chat_id IS 'Telegram chat ID для отправки сообщений';
+COMMENT ON COLUMN telegram_integrations.start_token IS 'Временный токен для deep link при первом подключении';
+