fix: restore missing hard-reset endpoint after file overwrite

fix: resolve stale SSE state by forcing fresh load from bucket

feat: add hard-reset endpoint to clear hf bucket

feat: implement pre-baked PNG ETL pipeline to optimize memory and cloud storage

feat: implement SSE streaming and physical bucket deletion for scheduler

feat: complete automated mosdac to ai animation pipeline

feat(fullstack): final production-readiness overhaul

recitfied visualization

added backend logic for upload and metadata module