fix: load tbank proto contracts at runtime

apps/backend/nest-cli.json

@@ -1,4 +1,13 @@
 {
   "collection": "@nestjs/schematics",
-  "sourceRoot": "src"
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "assets": [
+      {
+        "include": "modules/tbank/proto/contracts/**/*",
+        "outDir": "dist"
+      }
+    ],
+    "watchAssets": true
+  }
 }

apps/backend/src/modules/tbank/services/tbank-client.service.spec.ts

@@ -35,6 +35,12 @@ describe('TBankClientService', () => {
     });
   });
 
+  it('creates service clients from vendored proto contracts', () => {
+    const service = new TBankClientService(config);
+
+    expect(() => service.getServiceClient('UsersService')).not.toThrow();
+  });
+
   it('throws integration unavailable when token is missing', async () => {
     const missingConfig = {
       get: vi.fn((key: string, fallback?: unknown) =>

apps/backend/src/modules/tbank/services/tbank-client.service.ts

@@ -17,6 +17,7 @@ import {
 } from '@grpc/grpc-js';
 import { loadSync } from '@grpc/proto-loader';
 import PQueue from 'p-queue';
+import { existsSync } from 'node:fs';
 import { join } from 'node:path';
 import { TBANK_PROTO_FILES, TBANK_PROTO_PACKAGE } from '../tbank.config';
 
@@ -44,19 +45,29 @@ export class TBankClientService {
       intervalCap: this.configService.get<number>('app.tbank.rateLimitPerSecond', 5),
     });
 
-    const protoRoot = join(__dirname, '..', 'proto', 'contracts');
-    const definition = loadSync(Object.values(TBANK_PROTO_FILES), {
+    const protoRoot = this.resolveProtoRoot();
+    const definition = loadSync(
+      Object.values(TBANK_PROTO_FILES).map((fileName) => join(protoRoot, fileName)),
+      {
         includeDirs: [protoRoot],
         keepCase: false,
         longs: String,
         enums: String,
         defaults: true,
         oneofs: true,
-    });
+      },
+    );
 
     this.packageDefinition = loadPackageDefinition(definition);
   }
 
+  private resolveProtoRoot(): string {
+    const distProtoRoot = join(__dirname, '..', 'proto', 'contracts');
+    if (existsSync(distProtoRoot)) return distProtoRoot;
+
+    return join(process.cwd(), 'src', 'modules', 'tbank', 'proto', 'contracts');
+  }
+
   createMetadata(): Metadata {
     const token = this.configService.get<string>('app.tbank.token', '');
     if (!token) {