updated README

README.md

@@ -72,11 +72,11 @@ Extract the downloaded ZIP file into your preferred working directory.
 
 ### 4. Open the application in your browser at `http://localhost:5173`
 
-# Info
-
 - Frontend runs on port 5173 by default
 - Backend runs on port 8080 by default
 
+# Info
+
 - The backend uses a MySQL database named `market_db`.  
 - The commands above initialize the following users, all of which have the password `123456`:
 
@@ -89,6 +89,8 @@ Extract the downloaded ZIP file into your preferred working directory.
 - A sample conversation is created between `dummy` and `dummy2`.  
 - Sample item images are loaded automatically from `backend/src/main/resources/dummy_images` and copied into `static/uploads/items/{itemId}`.
 
+- [View Documentation](docs/): per-layer class diagrams, ERD diagram for `market_db`, and an overall overview.
+
 # Testing
 
 - **Frontend Tests:**