Update README and license

Seed demo LLM analysis reports by UI language.

Fix HF demo seed import: remove unsupported unistr() from demo.sql.

Add default LLM settings with LLM_API_KEY from environment

Add demo seed data for Hugging Face Space.

Add dev scaffolding and zhiya.db migration script.

Default admin password to 123456 for HF Space

Add Hugging Face Space deployment