Fix: fixed file upload, added missing API functions, fixed frontend Dockerfile

integrate OCRmyPDF for text extraction from PDF files

Remove duplicate gradlew files from wrong directory

Update docker-compose.yml для работы с объединенной структурой проекта

Merge backend-main: объединение frontend и backend проектов

Initial commit: Spring Boot backend with PDF processing, OCR, Docker support

Full integration: Docker support, full-width design, Tailwind CSS 4.x, backend API integration

Initial commit: Spring Boot backend with PDF processing, OCR, Docker support

Full integration: Docker support, full-width design, Tailwind CSS 4.x, backend API integration

update README.md

Add .gitignore for Docker and build files

Update frontend: improved design, full-width layout, Docker support, Tailwind CSS 4.x