Position: Early-Stage Quality Assurance in Annotation Pipelines Is More Cost-Effective Than Late-Stage Validation. - Sunil Kothari; Sumukha Sharma Thoppanahalli Chandramouli; Naman Khandelwal; Parth Kulshreshtha; Ashi Jain; Kriti Banka; Tanuja Chintada; Venkata Triveni; Gulipalli Praveen Kumar; Manish Mehta; Tao Liu (CoRR, 2026)