Initial commit: VKUS vitrina MVP (frontend + backend).

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/notification_store.py

@@ -0,0 +1,44 @@
+from datetime import datetime, timezone
+
+from app.models import NotificationItem
+
+
+class NotificationStore:
+    def __init__(self) -> None:
+        self._items: list[NotificationItem] = []
+
+    def list_all(self) -> list[NotificationItem]:
+        return sorted(self._items, key=lambda n: n.created_at, reverse=True)
+
+    def unread_count(self) -> int:
+        return sum(1 for item in self._items if not item.read)
+
+    def add(self, title: str, text: str, link_tab: str | None = None) -> NotificationItem:
+        item = NotificationItem(
+            id=f"ntf-{int(datetime.now(timezone.utc).timestamp() * 1000)}",
+            title=title,
+            text=text,
+            created_at=datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%S"),
+            read=False,
+            link_tab=link_tab,  # type: ignore[arg-type]
+        )
+        self._items.insert(0, item)
+        return item
+
+    def mark_read(self, notification_id: str) -> bool:
+        for item in self._items:
+            if item.id == notification_id:
+                item.read = True
+                return True
+        return False
+
+    def mark_all_read(self) -> int:
+        count = 0
+        for item in self._items:
+            if not item.read:
+                item.read = True
+                count += 1
+        return count
+
+
+notification_store = NotificationStore()