perf: add pagination, filters, and fix Django sync pagination

rrbec_server/cmd/server/main.go

@@ -26,6 +26,7 @@ func main() {
 
 	// 4. Start Sync Worker
 	syncer := sync.NewSyncer(repo, config.AppConfig.DjangoBaseURL, config.AppConfig.DjangoMasterUser, config.AppConfig.DjangoMasterPassword)
+	handler.SetSyncer(syncer)
 	syncer.Start()
 
 	// 4. Setup Gin Router
@@ -52,6 +53,7 @@ func main() {
 		{
 			protected.POST("/products", handler.CreateProduct)
 			protected.PATCH("/products/:id", handler.UpdateProduct)
+			protected.POST("/admin/resync-products", handler.ResyncProducts)
 			protected.POST("/categories", handler.CreateCategory)
 			protected.PATCH("/categories/:id", handler.UpdateCategory)
 			protected.POST("/comandas", handler.CreateComanda)