feat(tbank): add GET /positions endpoint with cursor pagination

apps/backend/src/modules/tbank/dto/broker-position-query.dto.ts

@@ -0,0 +1,18 @@
+import { ApiPropertyOptional } from '@nestjs/swagger';
+import { Type } from 'class-transformer';
+import { IsNumber, IsOptional, IsString, Max, Min } from 'class-validator';
+
+export class BrokerPositionQueryDto {
+  @ApiPropertyOptional({ description: 'Cursor for pagination (positionUid)' })
+  @IsOptional()
+  @IsString()
+  cursor?: string;
+
+  @ApiPropertyOptional({ default: 10 })
+  @IsOptional()
+  @Type(() => Number)
+  @IsNumber()
+  @Min(1)
+  @Max(100)
+  limit?: number = 10;
+}

apps/backend/src/modules/tbank/tbank.controller.ts

@@ -7,7 +7,9 @@ import {
   BrokerOperationSyncEnvelopeDto,
   BrokerOperationsEnvelopeDto,
   BrokerPortfolioEnvelopeDto,
+  BrokerPositionsEnvelopeDto,
 } from './dto/broker-envelope.dto';
+import { BrokerPositionQueryDto } from './dto/broker-position-query.dto';
 import { BrokerOperationQueryDto } from './dto/broker-operation-query.dto';
 import { BrokerOperationSyncQueryDto } from './dto/broker-operation-sync-query.dto';
 import { BrokerAccountsService } from './services/broker-accounts.service';
@@ -43,6 +45,21 @@ export class TBankController {
     return new ApiResponse(result.data, result.meta.fromCache, result.meta.cachedAt);
   }
 
+  @Get('accounts/:accountId/positions')
+  @ApiOperation({ summary: 'Get paginated T-Bank broker account positions' })
+  @ApiOkResponse({ type: BrokerPositionsEnvelopeDto })
+  async getPositions(
+    @Param('accountId') accountId: string,
+    @Query() query: BrokerPositionQueryDto,
+  ) {
+    const result = await this.brokerPortfolioService.getPositions(
+      accountId,
+      query.cursor,
+      query.limit,
+    );
+    return new ApiResponse(result.data, result.meta.fromCache, result.meta.cachedAt);
+  }
+
   @Get('accounts/:accountId/operations')
   @ApiOperation({ summary: 'Get paginated T-Bank broker account operations' })
   @ApiOkResponse({ type: BrokerOperationsEnvelopeDto })