feat(telegram): integrate Telegram bot for notifications and add related models

apps/backend/prisma/migrations/20260617000000_add_telegram/migration.sql

@@ -0,0 +1,31 @@
+-- CreateTable
+CREATE TABLE "telegram_chats" (
+    "id" TEXT NOT NULL,
+    "chatId" BIGINT,
+    "code" TEXT NOT NULL,
+    "validatedAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "telegram_chats_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "telegram_daily_max_notifications" (
+    "id" TEXT NOT NULL,
+    "date" TIMESTAMP(3) NOT NULL,
+    "quoteType" "QuoteType" NOT NULL,
+    "maxValue" MONEY NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "telegram_daily_max_notifications_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "telegram_chats_chatId_key" ON "telegram_chats"("chatId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "telegram_chats_code_key" ON "telegram_chats"("code");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "telegram_daily_max_notifications_date_quoteType_key" ON "telegram_daily_max_notifications"("date", "quoteType");

apps/backend/prisma/schema.prisma

@@ -69,6 +69,28 @@ model Verification {
   @@map("verification")
 }
 
+model TelegramChat {
+  id          String    @id @default(cuid())
+  chatId      BigInt?   @unique
+  code        String    @unique
+  validatedAt DateTime?
+  createdAt   DateTime  @default(now())
+
+  @@map("telegram_chats")
+}
+
+model TelegramDailyMaxNotification {
+  id        String    @id @default(cuid())
+  date      DateTime
+  quoteType QuoteType
+  maxValue  Decimal   @db.Money
+  createdAt DateTime  @default(now())
+  updatedAt DateTime  @updatedAt
+
+  @@unique([date, quoteType])
+  @@map("telegram_daily_max_notifications")
+}
+
 enum QuoteType {
   BLUE
   BNA