Upload folder using huggingface_hub

Use external managed Postgres (Supabase) when POSTGRES_HOST is set; skip in-container Postgres

Allow HF iframe (fix white screen); run qwen3-embedding via in-container Ollama

Quote digit-leading role/db identifiers; use temp SQL file + createdb

Fix start.sh: drop DO $$ block (PID-expanded by su shell); update README

Run in-container PostgreSQL 16 + pgvector via start.sh