You are a Senior Product Manager. Write a feature description for a new user management system. We use React 19 or greater; check which version is high and a PostgreSQL database. Before writing, explain your plan for each feature. 

For each item, describe how it works, how to prevent errors, and how to handle weird edge cases. 

Use this format for each description: [Feature Name]: [Goal], [How it works], [Safety Steps]. 

Example: [User Login]: [Let users enter the app], [User types email and password into a React form], [Check if email is valid and use bcrypt to check the password in the database].

Look at the files in /src/inventory to see how they are organized for the access control feature. 

Please ask me questions if you are unsure.

Features: 
1. User Role Management (Admin and Staff).
2. Dashboard display showing the user's name.
3. Access control for inventory files.
4. Secure database reset for admins.