feat(sync): synchronize Hiboutik data through POST /sync

POST /sync starts the full synchronization in the background (202, or 409 when one is already running). Entities are synced in dependency order: brands, categories, suppliers, products (with versions and stocks), customers. Each row is synced independently so that a failure is logged without stopping the rest. Replaces the default AppService.

src/app.controller.ts

@@ -1,12 +1,17 @@
-import { Controller, Get } from '@nestjs/common';
-import { AppService } from './app.service';
+import { ConflictException, Controller, HttpCode, HttpStatus, Post } from '@nestjs/common';
+import { HiboutikService } from './services/hiboutik/hiboutik.service';
 
 @Controller()
 export class AppController {
-  constructor(private readonly appService: AppService) {}
+  constructor(private readonly hiboutikService: HiboutikService) {}
 
-  @Get()
-  getHello(): string {
-    return this.appService.getHello();
+  /** Starts the synchronization in the background and answers immediately: 202, or 409 if one is already running. */
+  @Post('sync')
+  @HttpCode(HttpStatus.ACCEPTED)
+  hiboutikSync() {
+    if (!this.hiboutikService.startSync()) {
+      throw new ConflictException('A Hiboutik synchronization is already in progress');
+    }
+    return { message: 'Hiboutik synchronization started' };
   }
 }