Recently added, shop sorting, and outfit cards with T5 products

- The inventory's Recently Added puts T5 products added to the library in the last 30 days first.
- The shop's T5 listing follows its sort menu: Best Match ranks by name, Newest by upload date
  (oldest first ascending); ratings and prices (T5 products have neither) sort by newest.
- Outfit cards: outfit_products.php gets the outfit's community products added (not for sale),
  find_bundle.php is asked about IMVU's products only, and removing one in the card (remove_pids)
  keeps it from IMVU and forgets it in the outfit.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

internal/products/recent.go

@@ -0,0 +1,78 @@
+package products
+
+import (
+	"encoding/json"
+	"net/http"
+	"sort"
+	"strconv"
+	"time"
+
+	"git.t5de.dev/t5de/t5de-proxy/internal/hub"
+	"git.t5de.dev/t5de/t5de-proxy/internal/proxy"
+)
+
+// The inventory's Recently Added (api/recently_added_inventory.php?type=clothing|furni|scenes) is a list of product
+// IDs from IMVU; T5 products the person added to their library lately go first, newest first.
+
+// recentFor is how long a T5 product counts as recently added.
+const recentFor = 30 * 24 * time.Hour
+
+// IMVU's categories for furniture and rooms (the inventory's FURNI_CATEGORIES and ROOM_CATEGORIES, and rooms' 107).
+var (
+	furniCategories = map[int64]bool{1027: true, 110: true}
+	roomCategories  = map[int64]bool{107: true, 109: true, 366: true, 626: true, 2386: true}
+)
+
+// inventoryType is which Recently Added list a product belongs in: clothing (anything worn), furni or scenes.
+func inventoryType(categories []hub.Category) string {
+	for _, c := range categories {
+		if furniCategories[c.ID] {
+			return "furni"
+		}
+	}
+	for _, c := range categories {
+		if roomCategories[c.ID] {
+			return "scenes"
+		}
+	}
+	return "clothing"
+}
+
+func (p *Products) interceptRecent(x *proxy.Exchange) error {
+	if p.Library == nil {
+		return nil
+	}
+	kind := x.URL.Query().Get("type")
+	x.ModifyResponse = func(resp *http.Response, body []byte) ([]byte, error) {
+		var ids []json.RawMessage
+		if resp.StatusCode != http.StatusOK || json.Unmarshal(body, &ids) != nil {
+			return body, nil
+		}
+		ours := p.recentLocals(kind, time.Now())
+		if len(ours) == 0 {
+			return body, nil
+		}
+		out := make([]json.RawMessage, 0, len(ours)+len(ids))
+		for _, local := range ours {
+			out = append(out, json.RawMessage(strconv.FormatInt(local, 10)))
+		}
+		return json.Marshal(append(out, ids...))
+	}
+	return nil
+}
+
+// recentLocals is the local IDs of T5 products of that kind added to the library within recentFor, newest first.
+func (p *Products) recentLocals(kind string, now time.Time) []int64 {
+	lib := p.Library()
+	sort.SliceStable(lib, func(i, j int) bool { return lib[i].AddedAt.After(lib[j].AddedAt) })
+	var out []int64
+	for _, e := range lib {
+		if now.Sub(e.AddedAt) > recentFor || inventoryType(e.Product.Categories) != kind {
+			continue
+		}
+		if s := p.byProductID(e.Product.ID); s != nil && p.inHubDir(e.Product.ID) {
+			out = append(out, s.local)
+		}
+	}
+	return out
+}