feat(BE-47,48,49,50): implement inventory adjustment system

- Extend DB schema with product_warehouses and stock_logs tables
- Implement stock adjustment API (increase/decrease operations)
- Add comprehensive validation for all adjustment operations
- Implement audit log system for each adjustment with history tracking
- Include transaction handling, DTOs, seeders, and proper error handling
- Add adjustment history API with pagination and filtering

TODO: Integration testing pending

internal/modules/master/products/controllers/product.controller.go

@@ -24,9 +24,10 @@ func NewProductController(productService service.ProductService) *ProductControl
 
 func (u *ProductController) GetAll(c *fiber.Ctx) error {
 	query := &validation.Query{
-		Page:   c.QueryInt("page", 1),
-		Limit:  c.QueryInt("limit", 10),
-		Search: c.Query("search", ""),
+		Page:              c.QueryInt("page", 1),
+		Limit:             c.QueryInt("limit", 10),
+		Search:            c.Query("search", ""),
+		ProductCategoryID: c.QueryInt("product_category_id", 0),
 	}
 
 	result, totalResults, err := u.ProductService.GetAll(c, query)

internal/modules/master/products/services/product.service.go

@@ -72,6 +72,9 @@ func (s productService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity
 		if params.Search != "" {
 			return db.Where("name LIKE ?", "%"+params.Search+"%")
 		}
+		if params.ProductCategoryID != 0 {
+			return db.Where("product_category_id = ?", params.ProductCategoryID)
+		}
 		return db.Order("created_at DESC").Order("updated_at DESC")
 	})
 

internal/modules/master/products/validations/product.validation.go

@@ -29,7 +29,8 @@ type Update struct {
 }
 
 type Query struct {
-	Page   int    `query:"page" validate:"omitempty,number,min=1"`
-	Limit  int    `query:"limit" validate:"omitempty,number,min=1"`
-	Search string `query:"search" validate:"omitempty,max=50"`
+	Page              int    `query:"page" validate:"omitempty,number,min=1"`
+	Limit             int    `query:"limit" validate:"omitempty,number,min=1"`
+	Search            string `query:"search" validate:"omitempty,max=50"`
+	ProductCategoryID int   `query:"product_category_id" validate:"omitempty,number,min=1"`
 }