Update stack.md

stack.md

@@ -1,21 +1,21 @@
-# 🛠️ Technology Stack
+# 🛠️ Tech Stack
 
 ## Backend
-- **Language**: Java
+- **Language**: Java 25
 - **Framework**: Spring Boot (Web, Data JPA)
 - **Template Engine**: Thymeleaf
 - **JSON Processing**: JSON.simple
 - **Concurrency**: Spring Async (`@Async`)
 
-## Frontend
-- **Structure**: HTML5
-- **Styling**: CSS3, Bootstrap 5
-- **Scripting**: JavaScript (Vanilla)
+### Frontend & Interactivity
+* **Thymeleaf:** Server-side Java template engine for seamless HTML rendering.
+* **HTMX:** Powering fast, AJAX-like interactivity without the complexity of heavy JavaScript frameworks.
+* **Scripting**: JavaScript (Vanilla)
 
 ## Data & Storage
-- **Database**: H2 (Dev) / MySQL (Prod)
-- **ORM**: Hibernate (via Spring Data JPA)
-- **File System**: `java.nio` for local file management
+* **Database**: H2 (Dev) / MySQL (Prod)
+* **ORM**: Hibernate (via Spring Data JPA)
+* **File System**: `java.nio` for local file management
 
 ## Build & DevOps
-- **Build Tool**: Maven
+* **Build Tool**: Maven