feat(BE-34): extend DB schema and update master data APIs [partial]

✅ DB Schema: product_warehouse entity and migration
✅ Master Data: added filter params to getall APIs
🚧 Pending: stock_logs implementation and adjustment APIs

internal/modules/inventory/adjustments/dto/adjustment.dto.go

@@ -0,0 +1,64 @@
+package dto
+
+import (
+	"time"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	userDTO "gitlab.com/mbugroup/lti-api.git/internal/modules/users/dto"
+)
+
+// === DTO Structs ===
+
+type AdjustmentBaseDTO struct {
+	Id        uint      `json:"id"`
+	Name      string    `json:"name"`
+}
+
+type AdjustmentListDTO struct {
+	AdjustmentBaseDTO
+	CreatedUser *userDTO.UserBaseDTO `json:"created_user"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+type AdjustmentDetailDTO struct {
+	AdjustmentListDTO
+}
+
+// === Mapper Functions ===
+
+func ToAdjustmentBaseDTO(e entity.Adjustment) AdjustmentBaseDTO {
+	return AdjustmentBaseDTO{
+		Id:    e.Id,
+		Name:  e.Name,
+	}
+}
+
+func ToAdjustmentListDTO(e entity.Adjustment) AdjustmentListDTO {
+	var createdUser *userDTO.UserBaseDTO
+	if e.CreatedUser.Id != 0 {
+		mapped := userDTO.ToUserBaseDTO(e.CreatedUser)
+		createdUser = &mapped
+	}
+
+	return AdjustmentListDTO{
+		AdjustmentBaseDTO: ToAdjustmentBaseDTO(e),
+		CreatedAt:   e.CreatedAt,
+		UpdatedAt:   e.UpdatedAt,
+		CreatedUser: createdUser,
+	}
+}
+
+func ToAdjustmentListDTOs(e []entity.Adjustment) []AdjustmentListDTO {
+	result := make([]AdjustmentListDTO, len(e))
+	for i, r := range e {
+		result[i] = ToAdjustmentListDTO(r)
+	}
+	return result
+}
+
+func ToAdjustmentDetailDTO(e entity.Adjustment) AdjustmentDetailDTO {
+	return AdjustmentDetailDTO{
+		AdjustmentListDTO: ToAdjustmentListDTO(e),
+	}
+}