- Add image_extractor, pdf_downloader, pi_client, trends services - Add shared utils module - Refactor summarizer, embedder, routes for cleaner separation - Update tests to match new service structure
- Add FastAPI app with paper browsing UI and REST API - Add crawler service and database models - Add scripts for DB init and manual crawl - Add docs (api-and-ui, data-model, services) - Add requirements and project config