feat: add tbank tokens

prisma/migrations/20260813145440_add_tbank_connection/migration.sql

@@ -0,0 +1,10 @@
+-- CreateTable
+CREATE TABLE "TbankConnection" (
+    "userId" TEXT NOT NULL,
+    "encryptedToken" TEXT NOT NULL,
+    "connectedAt" DATETIME NOT NULL,
+    CONSTRAINT "TbankConnection_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "TbankConnection_userId_key" ON "TbankConnection"("userId");

prisma/schema.prisma

@@ -9,12 +9,20 @@ datasource db {
 }
 
 model User {
-  id           String    @id
-  email        String    @unique
-  passwordHash String
-  sessions     Session[]
-  createdAt    DateTime  @default(now())
-  updatedAt    DateTime  @updatedAt
+  id              String           @id
+  email           String           @unique
+  passwordHash    String
+  sessions        Session[]
+  tbankConnection TbankConnection?
+  createdAt       DateTime         @default(now())
+  updatedAt       DateTime         @updatedAt
+}
+
+model TbankConnection {
+  userId         String   @unique
+  encryptedToken String
+  connectedAt    DateTime
+  user           User     @relation(fields: [userId], references: [id], onDelete: Cascade)
 }
 
 model Session {