Month: 2025-07 — Key accomplishments: Delivered a new Captcha Service for YunaiV/ruoyi-vue-pro enabling alphanumeric picture-word captchas. The service supports generation and validation of alphanumeric captchas and is registered for system-wide use. The work is tracked in commit 413eb23893111cac8babc99cc9fd78644a308984. There were no major bugs fixed this month. Impact: strengthens bot protection and improves user experience across the application, enabling more flexible verification flows and reducing captcha-related friction. Technologies/skills demonstrated: Java SPI-based service design, service registration, version-controlled feature delivery, and secure generation/validation logic. Business value: improved security with higher usability and a foundation for future captcha enhancements.