feat(models): add alert and box models

Adds comprehensive data structures for Alert and Box functionality across models.

lib/models/models.go

@@ -42,6 +42,8 @@ type BoxFile struct {
 
 type BoxManifest struct {
 	Files           []BoxFile `json:"files"`
+	OwnerID         string    `json:"owner_id,omitempty"`
+	OwnerUsername   string    `json:"owner_username,omitempty"`
 	CreatedAt       time.Time `json:"created_at"`
 	ExpiresAt       time.Time `json:"expires_at"`
 	RetentionKey    string    `json:"retention_key"`