[2026-04-28][refactor][general] migrate media fields to text storage, improve interactive upload handling, and add asset serialization helper.

👤 Author : Matoraaa
🌿 Branch : carousel
🔗 Commit : 4cd6989
📅 Date : 2026-04-28
📝 Note :
refactor: migrate media fields to text storage, improve interactive upload handling, and add asset serialization helper.