feat(backend): migrate auth and notifications off email

apps/notifications/api/schemas.py

@@ -0,0 +1,52 @@
+from datetime import datetime
+from typing import Any
+
+from ninja import Schema
+
+
+class NotificationSchema(Schema):
+    id: str
+    type: str
+    title: str
+    message: str
+    level: str
+    created_at: datetime | str
+    is_seen: bool
+    delete_on_seen: bool
+    action_url: str | None = None
+    entity_type: str | None = None
+    entity_id: int | str | None = None
+    meta: dict[str, Any] = {}
+
+
+class NotificationListSchema(Schema):
+    count: int
+    unread_count: int
+    notifications: list[NotificationSchema]
+
+
+class NotificationSeenIn(Schema):
+    id: str
+
+
+class NotificationSeenResponseSchema(Schema):
+    marked_read: bool
+    notification_id: str | None = None
+    deleted: bool = False
+    notification: NotificationSchema | None = None
+    unread_count: int | None = None
+
+
+class NotificationDeleteResponseSchema(Schema):
+    deleted: bool
+    notification_id: str | None = None
+    unread_count: int | None = None
+
+
+class NotificationMarkAllReadResponseSchema(Schema):
+    marked_read: int
+
+
+class NotificationStreamTokenResponseSchema(Schema):
+    token: str
+    expires_in: int