diff --git a/features/conversation-assistant/backend-api/src/migrations/1735900000000-AddTrainingApproval.ts b/features/conversation-assistant/backend-api/src/migrations/1735900000000-AddTrainingApproval.ts
index a71421754..b713640d5 100755
--- a/features/conversation-assistant/backend-api/src/migrations/1735900000000-AddTrainingApproval.ts
+++ b/features/conversation-assistant/backend-api/src/migrations/1735900000000-AddTrainingApproval.ts
@@ -1,4 +1,6 @@
-import { MigrationInterface, QueryRunner, TableColumn } from 'typeorm';
+import { TableColumn } from 'typeorm';
+
+import type { MigrationInterface, QueryRunner} from 'typeorm';
 
 export class AddTrainingApproval1735900000000 implements MigrationInterface {
   name = 'AddTrainingApproval1735900000000';
diff --git a/features/conversation-assistant/backend-api/src/migrations/1736000000000-AddScammerProfiles.ts b/features/conversation-assistant/backend-api/src/migrations/1736000000000-AddScammerProfiles.ts
index 80b545c28..fcf1b7288 100755
--- a/features/conversation-assistant/backend-api/src/migrations/1736000000000-AddScammerProfiles.ts
+++ b/features/conversation-assistant/backend-api/src/migrations/1736000000000-AddScammerProfiles.ts
@@ -1,4 +1,4 @@
-import { MigrationInterface, QueryRunner } from 'typeorm';
+import type { MigrationInterface, QueryRunner } from 'typeorm';
 
 export class AddScammerProfiles1736000000000 implements MigrationInterface {
   name = 'AddScammerProfiles1736000000000';
diff --git a/features/conversation-assistant/backend-api/src/modules/attachments/attachments.controller.ts b/features/conversation-assistant/backend-api/src/modules/attachments/attachments.controller.ts
index 225dfc5ae..a9fcfc687 100755
--- a/features/conversation-assistant/backend-api/src/modules/attachments/attachments.controller.ts
+++ b/features/conversation-assistant/backend-api/src/modules/attachments/attachments.controller.ts
@@ -7,9 +7,11 @@ import {
   StreamableFile,
 } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiResponse, ApiParam } from '@nestjs/swagger';
+
+import { AttachmentsService } from './attachments.service';
+
 import type { Response } from 'express';
 import type { Readable } from 'stream';
-import { AttachmentsService } from './attachments.service';
 
 @ApiTags('attachments')
 @Controller('api/attachments')
diff --git a/features/conversation-assistant/backend-api/src/modules/attachments/attachments.module.ts b/features/conversation-assistant/backend-api/src/modules/attachments/attachments.module.ts
index 8be713b70..e1394e15c 100755
--- a/features/conversation-assistant/backend-api/src/modules/attachments/attachments.module.ts
+++ b/features/conversation-assistant/backend-api/src/modules/attachments/attachments.module.ts
@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
-import { MessageEntity } from '@/entities';
+
 import { AttachmentsController } from './attachments.controller';
 import { AttachmentsService } from './attachments.service';
 
+import { MessageEntity } from '@/entities';
+
 @Module({
   imports: [TypeOrmModule.forFeature([MessageEntity])],
   controllers: [AttachmentsController],
diff --git a/features/conversation-assistant/backend-api/src/modules/attachments/attachments.service.ts b/features/conversation-assistant/backend-api/src/modules/attachments/attachments.service.ts
index a9cd2183b..955a68036 100755
--- a/features/conversation-assistant/backend-api/src/modules/attachments/attachments.service.ts
+++ b/features/conversation-assistant/backend-api/src/modules/attachments/attachments.service.ts
@@ -1,8 +1,10 @@
+import { createReadStream, existsSync, statSync } from 'fs';
+import { join } from 'path';
+
 import { Injectable, Logger, NotFoundException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
-import { createReadStream, existsSync, statSync } from 'fs';
-import { join } from 'path';
+
 import { MessageEntity } from '@/entities';
 
 /** Base directory for attachment storage */
diff --git a/features/conversation-assistant/backend-api/src/modules/contacts/birthday-extraction.service.ts b/features/conversation-assistant/backend-api/src/modules/contacts/birthday-extraction.service.ts
index 365aca0af..223301a96 100755
--- a/features/conversation-assistant/backend-api/src/modules/contacts/birthday-extraction.service.ts
+++ b/features/conversation-assistant/backend-api/src/modules/contacts/birthday-extraction.service.ts
@@ -1,4 +1,5 @@
 import { Injectable } from '@nestjs/common';
+
 import { createLogger } from '@/common';
 
 export type BirthdaySource = 'direct-statement' | 'birthday-wish' | 'age-mention';
diff --git a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.controller.ts b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.controller.ts
index af1fc7db3..a5c2c7a71 100755
--- a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.controller.ts
+++ b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.controller.ts
@@ -9,12 +9,13 @@ import {
   HttpStatus,
 } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiResponse, ApiParam, ApiQuery } from '@nestjs/swagger';
-import { ContactsService } from './contacts.service';
+
 import {
   ClassifyContactDto,
   BulkClassifyDto,
   ListContactsQueryDto,
 } from './contacts.dto';
+import { ContactsService } from './contacts.service';
 
 @ApiTags('contacts')
 @Controller('api/contacts')
diff --git a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.dto.ts b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.dto.ts
index 7ebd1bdc6..f1a6ce574 100755
--- a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.dto.ts
+++ b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.dto.ts
@@ -1,6 +1,7 @@
-import { IsString, IsOptional, IsNumber, IsEnum, IsArray, Min, Max } from 'class-validator';
-import { Type } from 'class-transformer';
 import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
+import { Type } from 'class-transformer';
+import { IsString, IsOptional, IsNumber, IsEnum, IsArray, Min, Max } from 'class-validator';
+
 import type { ContactClassification, ClassificationSource } from '@/entities';
 
 export class ClassifyContactDto {
diff --git a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.module.ts b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.module.ts
index eb39b8194..2edafbdc8 100755
--- a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.module.ts
+++ b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.module.ts
@@ -1,10 +1,13 @@
+import { HttpModule } from '@nestjs/axios';
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
-import { HttpModule } from '@nestjs/axios';
-import { ContactEntity, ClassificationHistoryEntity } from '@/entities';
+
+import { BirthdayExtractionService } from './birthday-extraction.service';
 import { ContactsController } from './contacts.controller';
 import { ContactsService } from './contacts.service';
-import { BirthdayExtractionService } from './birthday-extraction.service';
+
+import { ContactEntity, ClassificationHistoryEntity } from '@/entities';
+
 
 @Module({
   imports: [
diff --git a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.service.ts b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.service.ts
index 7c298cb3f..edfbb1625 100755
--- a/features/conversation-assistant/backend-api/src/modules/contacts/contacts.service.ts
+++ b/features/conversation-assistant/backend-api/src/modules/contacts/contacts.service.ts
@@ -1,14 +1,9 @@
+import { HttpService } from '@nestjs/axios';
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository, ILike, In } from 'typeorm';
-import { HttpService } from '@nestjs/axios';
 import { firstValueFrom } from 'rxjs';
-import {
-  ContactEntity,
-  ClassificationHistoryEntity,
-  ContactClassification,
-  ClassificationSource,
-} from '@/entities';
+import { Repository, ILike, In } from 'typeorm';
+
 import {
   ClassifyContactDto,
   BulkClassifyDto,
@@ -16,7 +11,14 @@ import {
   MLAnalysisResultDto,
   ClassificationStatsDto,
 } from './contacts.dto';
+
 import { createLogger } from '@/common';
+import {
+  ContactEntity,
+  ClassificationHistoryEntity,
+  ContactClassification,
+  ClassificationSource,
+} from '@/entities';
 
 const ML_SERVICE_URL = process.env.ML_SERVICE_URL || 'http://localhost:8100';
 
diff --git a/features/conversation-assistant/backend-api/src/modules/conversations/conversations.controller.ts b/features/conversation-assistant/backend-api/src/modules/conversations/conversations.controller.ts
index c7cd6a4d7..3d47a1191 100755
--- a/features/conversation-assistant/backend-api/src/modules/conversations/conversations.controller.ts
+++ b/features/conversation-assistant/backend-api/src/modules/conversations/conversations.controller.ts
@@ -7,7 +7,9 @@ import {
 } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiResponse, ApiParam, ApiQuery } from '@nestjs/swagger';
 import { Request } from 'express';
+
 import { ConversationsService } from './conversations.service';
+
 import { JwtPayload } from '@/guards/jwt.guard';
 
 /** Request with optional device from JWT */
diff --git a/features/conversation-assistant/backend-api/src/modules/conversations/conversations.module.ts b/features/conversation-assistant/backend-api/src/modules/conversations/conversations.module.ts
index e55d10ca1..19eac021c 100755
--- a/features/conversation-assistant/backend-api/src/modules/conversations/conversations.module.ts
+++ b/features/conversation-assistant/backend-api/src/modules/conversations/conversations.module.ts
@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
-import { ConversationEntity, MessageEntity, DeviceEntity, ContactEntity } from '@/entities';
-import { ConversationsService } from './conversations.service';
+
 import { ConversationsController } from './conversations.controller';
+import { ConversationsService } from './conversations.service';
+
 import { DevicesModule } from '@/devices';
+import { ConversationEntity, MessageEntity, DeviceEntity, ContactEntity } from '@/entities';
 
 @Module({
   imports: [
diff --git a/features/conversation-assistant/backend-api/src/modules/conversations/conversations.service.ts b/features/conversation-assistant/backend-api/src/modules/conversations/conversations.service.ts
index fe5e23ca4..0028c3f35 100755
--- a/features/conversation-assistant/backend-api/src/modules/conversations/conversations.service.ts
+++ b/features/conversation-assistant/backend-api/src/modules/conversations/conversations.service.ts
@@ -1,6 +1,7 @@
 import { Injectable, NotFoundException, BadRequestException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository, LessThan, In } from 'typeorm';
+
 import { ConversationEntity, MessageEntity, ContactEntity } from '@/entities';
 
 // Extended conversation type with resolved participants
diff --git a/features/conversation-assistant/backend-api/src/modules/devices/devices.controller.ts b/features/conversation-assistant/backend-api/src/modules/devices/devices.controller.ts
index 153bc3503..1917d8641 100755
--- a/features/conversation-assistant/backend-api/src/modules/devices/devices.controller.ts
+++ b/features/conversation-assistant/backend-api/src/modules/devices/devices.controller.ts
@@ -9,8 +9,9 @@ import {
   ParseUUIDPipe,
 } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiResponse, ApiParam } from '@nestjs/swagger';
-import { DevicesService } from './devices.service';
+
 import { RegisterDeviceDto, VerifyDeviceDto } from './devices.dto';
+import { DevicesService } from './devices.service';
 // Dev mode: auth guards disabled
 // import { JwtAuthGuard } from '@/guards/jwt.guard';
 // import { DeviceGuard } from '@/guards/device.guard';
diff --git a/features/conversation-assistant/backend-api/src/modules/devices/devices.dto.ts b/features/conversation-assistant/backend-api/src/modules/devices/devices.dto.ts
index d44ade580..f965e9a4a 100755
--- a/features/conversation-assistant/backend-api/src/modules/devices/devices.dto.ts
+++ b/features/conversation-assistant/backend-api/src/modules/devices/devices.dto.ts
@@ -1,5 +1,5 @@
-import { IsString, IsNotEmpty, IsIn, MaxLength, MinLength, IsUUID, Matches } from 'class-validator';
 import { ApiProperty } from '@nestjs/swagger';
+import { IsString, IsNotEmpty, IsIn, MaxLength, MinLength, IsUUID, Matches } from 'class-validator';
 
 export class RegisterDeviceDto {
   @ApiProperty({