chore: guard backend responsibility boundaries

test/eslint-config.cjs

@@ -91,6 +91,36 @@ test('numeric literals require names, including previously ignored numbers and b
   }
 });
 
+test('architecture imports enforce direct boundaries without banning DTOs or pure protocol inputs', async () => {
+  const domain = 'src/modules/banking/bank-cards/domain/rub-money.ts';
+  const controller = 'src/modules/auth/presentation/auth.controller.ts';
+  const useCase = 'src/modules/banking/bank-cards/application/get-bank-summary.use-case.ts';
+  for (const [filePath, code] of [
+    [domain, 'import { Injectable } from "@nestjs/common";'],
+    [domain, 'import { MoneyDto } from "../../../../common/money.dto";'],
+    [domain, 'import { PrismaService } from "../../../../prisma/prisma.service";'],
+    [controller, 'import { PrismaService } from "../../../prisma/prisma.service";'],
+    [controller, 'import { TbankClient } from "../../../integrations/tbank/tbank.api";'],
+    [useCase, 'import { PrismaService } from "../../../../prisma/prisma.service";'],
+  ]) {
+    const [result] = await eslint.lintText(code, { filePath });
+    assert.equal(result.fatalErrorCount, 0);
+    assert.ok(result.messages.some(({ ruleId }) => ruleId === 'no-restricted-imports'), code);
+  }
+  for (const [filePath, code] of [
+    [domain, 'import type { Money } from "../../../../common/money.types";'],
+    [domain, 'import { TbankOperationState } from "../../../../integrations/tbank/tbank-protocol";'],
+    [controller, 'import { AuthService } from "../application/auth.service";'],
+    [useCase, 'import { BankCardsRepository } from "../infrastructure/bank-cards.repository";'],
+    [useCase, 'import { BankSummaryQueryDto } from "../presentation/bank-card.dto";'],
+    ['src/modules/banking/bank-cards/application/bank-cards.service.ts', 'import { PrismaService } from "../../../../prisma/prisma.service";'],
+  ]) {
+    const [result] = await eslint.lintText(code, { filePath });
+    assert.equal(result.fatalErrorCount, 0);
+    assert.ok(result.messages.every(({ ruleId }) => ruleId !== 'no-restricted-imports'), code);
+  }
+});
+
 // Single-use codes must be caught too; fixture literals remain independent wire assertions.
 test('machine codes require enum members without banning ordinary text or Prisma selects', async () => {
   const eslint = new ESLint();