feat: Add direct HTML to PDF export using Playwright, fix Chinese font support, add comprehensive analysis template

Complete removal of backward compatibility: Remove all QUERY_ENGINE, MEDIA_ENGINE, INSIGHT_ENGINE references, fix Forum Host model configuration, update database initialization for PostgreSQL views

Update .gitignore and Cursor settings to exclude .env file

Complete refactoring: Rename engines (Insight->Market, Media->Customer, Query->Compete), add PDF export, fix database constraints, update configurations

Merge pull request #355 from zzzpppy/fix/MindSpider_requirements

Update README.md.

Add files via upload

Update config.

update mindSpider requirements

Change configuration description guide.

Update email.

Merge pull request #340 from 666ghj/fix/docker-env-file-config

docs(README): update quick start guide

Merge pull request #322 from JasonDylan/fix/docker-env-file-config

Update operation guide in UI and config file.