feat: consolidate env config and add deployment files

- Add debug_font_path, demo_docs_dir, e2e_api_base_url to config.py
- Fix hardcoded paths in pp_structure_debug.py, create_demo_images.py
- Fix hardcoded paths in test files
- Update .env.example with new configuration options
- Update .gitignore to exclude AI development files (.claude/, openspec/, AGENTS.md, CLAUDE.md)
- Add production startup script (start-prod.sh)
- Add README.md with project documentation
- Add 1panel Docker deployment files (docker-compose.yml, Dockerfiles, nginx.conf)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deploy/1panel/.env.example

@@ -0,0 +1,24 @@
+# Tool_OCR - 1Panel Docker Deployment Configuration
+# Copy this file to .env and fill in your values
+
+# ===== Service Ports =====
+BACKEND_PORT=8000
+FRONTEND_PORT=12010
+
+# ===== Database Configuration =====
+MYSQL_HOST=your-mysql-host
+MYSQL_PORT=3306
+MYSQL_USER=your-username
+MYSQL_PASSWORD=your-password
+MYSQL_DATABASE=your-database
+
+# ===== Security =====
+# Generate a random string for production: openssl rand -hex 32
+SECRET_KEY=your-secret-key-change-this
+
+# ===== Translation API (DIFY) =====
+DIFY_BASE_URL=https://your-dify-instance.example.com/v1
+DIFY_API_KEY=your-dify-api-key
+
+# ===== Logging =====
+LOG_LEVEL=INFO