docs(cfp): Adding a CFP for jonthebeach (#706)

Author: jabrena

documentation/conferences/cfp/jonthebeach/ABSTRACT_TALK.md

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+Technical Workshop on AI Tooling for Java Development
+
+Description
+For nearly three decades, enterprise Java software has been implemented manually by software engineers.
+In 2023, a new generation of AI-powered tools emerged, and tools like Cursor AI, Claude Code, and others are now changing the way software is developed.
+
+This workshop is designed for all levels and aims to cover in a practical way the following topics:
+
+- Introduction
+- How do you develop?
+- How do you use an agent-driven engineering workflow?
+- Evolving the SDLC
+- Concepts
+- Demos
+
+In the demos, participants will understand and learn about the power of AI agent harnesses in daily work across classic areas such as analysis, design, and implementation.
+
+The demos will explain how to create a good `AGENTS.md`, how to build a solid collection of MCP servers, and how to use sub-agents in implementations and skills.
+
+The talk explains the main concepts using examples based on enterprise frameworks such as Spring Boot, Quarkus, and Micronaut, and the workshop will be delivered in English.
+
+Juan Antonio