feat: Implement batch team owner processing with dedicated upload, configuration, and monitoring pages and backend services.

backend/internal/database/sqlite.go

@@ -253,6 +253,12 @@ func (d *DB) MarkOwnerAsFailed(email string) error {
 	return err
 }
 
+// MarkOwnerAsInvalid 标记 Owner 为无效（Team 被封禁，永久跳过）
+func (d *DB) MarkOwnerAsInvalid(email string) error {
+	_, err := d.db.Exec("UPDATE team_owners SET status = 'invalid' WHERE email = ?", email)
+	return err
+}
+
 // UpdateOwnerStatus 更新状态
 func (d *DB) UpdateOwnerStatus(id int64, status string) error {
 	_, err := d.db.Exec("UPDATE team_owners SET status = ? WHERE id = ?", status, id)