update

catalog/builder.go

@@ -144,6 +144,10 @@ func Apply(s Schema, source map[string]any) (Projection, error) {
 		InventoryTracked: boolOf(source, s.InventoryTrackedF, truthy),
 		DropShip:         boolOf(source, s.DropShipF, truthy),
 		Category:         stringOf(source, s.CategoryField),
+		Category2:        stringOf(source, s.Category2Field),
+		Category3:        stringOf(source, s.Category3Field),
+		Category4:        stringOf(source, s.Category4Field),
+		Category5:        stringOf(source, s.Category5Field),
 		Brand:            stringOf(source, s.BrandField),
 		Image:            stringOf(source, s.ImageField),
 		UpdatedAt:        upd,

catalog/projection.go

@@ -19,6 +19,10 @@
 //	inventory_tracked ← bool coercion of source[InventoryTrackedField]
 //	drop_ship        ← bool coercion of source[DropShipField]
 //	category         ← source[CategoryField]          (omitempty)
+//	category2        ← source[Category2Field]         (omitempty)
+//	category3        ← source[Category3Field]         (omitempty)
+//	category4        ← source[Category4Field]         (omitempty)
+//	category5        ← source[Category5Field]         (omitempty)
 //	brand            ← source[BrandField]             (omitempty)
 //	image            ← source[ImageField]             (omitempty)
 //	updated_at       ← Unix-ms from source[UpdatedAtField] OR stamped at
@@ -75,7 +79,10 @@ import (
 //	                  asks for these so the cart can pre-mark drop-ship
 //	                  items before checkout and inventory can opt-out of
 //	                  tracking for non-stock items.
-//	Category / Brand / Image — display projection only.
+//	Category* / Brand / Image — display projection only.
+//	Category2–Category5 extend category with deeper taxonomy levels for
+//	promotions engine multi-level matching and tracking personas.
+//	Each level is optional; an empty string means "not published".
 //	UpdatedAt        — version stamp for snapshot + revalidate.
 //
 // WIRE-COMPAT: adding a field is forward+backward-safe. Old snapshot
@@ -97,6 +104,10 @@ type Projection struct {
 	InventoryTracked bool            `json:"inventory_tracked"`
 	DropShip         bool            `json:"drop_ship"`
 	Category         string          `json:"category,omitempty"`
+	Category2        string          `json:"category2,omitempty"`
+	Category3        string          `json:"category3,omitempty"`
+	Category4        string          `json:"category4,omitempty"`
+	Category5        string          `json:"category5,omitempty"`
 	Brand            string          `json:"brand,omitempty"`
 	Image            string          `json:"image,omitempty"`
 	UpdatedAt        int64           `json:"updated_at"`

catalog/schema.go

@@ -59,6 +59,10 @@ type Schema struct {
 	InventoryTrackedF string `json:"inventory_tracked_field,omitempty"`
 	DropShipF         string `json:"drop_ship_field,omitempty"`
 	CategoryField     string `json:"category_field,omitempty"`
+	Category2Field    string `json:"category2_field,omitempty"`
+	Category3Field    string `json:"category3_field,omitempty"`
+	Category4Field    string `json:"category4_field,omitempty"`
+	Category5Field    string `json:"category5_field,omitempty"`
 	BrandField        string `json:"brand_field,omitempty"`
 	ImageField        string `json:"image_field,omitempty"`
 	// AttributesFields names the keys in the source map[string]any that
@@ -125,6 +129,10 @@ func DefaultSchema() Schema {
 		InventoryTrackedF: "inventory_tracked",
 		DropShipF:         "drop_ship",
 		CategoryField:     "category",
+		Category2Field:    "category2",
+		Category3Field:    "category3",
+		Category4Field:    "category4",
+		Category5Field:    "category5",
 		BrandField:        "brand",
 		ImageField:        "image",
 		// Standard product service carries the integer catalog id under "id".
@@ -165,6 +173,10 @@ func BygglagretSchema() Schema {
 		InventoryTrackedF: "StockTracked",
 		DropShipF:        "DropshipFlag",
 		CategoryField:    "CategoryPath",
+		Category2Field:   "Category2",
+		Category3Field:   "Category3",
+		Category4Field:   "Category4",
+		Category5Field:   "Category5",
 		BrandField:       "Brand",
 		ImageField:       "PrimaryImage",
 		ItemIdField:      "item_id",