docs: update README to include Wakatime badge for tracking development time

Author: ssdeanx

README.md

@@ -14,6 +14,7 @@
 **AgentStack** is a **production-grade multi-agent framework** built on Mastra, delivering **30+ enterprise tools**, **25+ specialized agents**, **10 workflows**, **4 agent networks**, **49 UI components**, and **A2A/MCP orchestration** for scalable AI systems. Focuses on **financial intelligence**, **RAG pipelines**, **observability**, **secure governance**, and **AI chat interfaces**.
 
 [![GitHub](https://img.shields.io/badge/GitHub-ssdeanx/AgentStack-blueviolet?logo=github)](https://github.com/ssdeanx/AgentStack)
+[![wakatime](https://wakatime.com/badge/user/7a2fb9a0-188b-4568-887f-7645f9249e62/project/e44412f3-9bcc-4661-b79d-23160d90dfe0.svg)](https://wakatime.com/badge/user/7a2fb9a0-188b-4568-887f-7645f9249e62/project/e44412f3-9bcc-4661-b79d-23160d90dfe0)
 [![@mastra/core](https://img.shields.io/npm/v/@mastra/core.svg)](https://www.npmjs.com/package/@mastra/core)
 [![@mastra/pg](https://img.shields.io/npm/v/@mastra/pg.svg)](https://www.npmjs.com/package/@mastra/pg)
 [![@mastra/rag](https://img.shields.io/npm/v/@mastra/rag.svg)](https://www.npmjs.com/package/@mastra/rag)