renzrebadulla55-dot/Programing_SMS — reverse-engineered prompt

Build me a working PHP web app from this existing Programing_SMS project. There isn’t a README, so please inspect the folders and the database_schema.sql file, figure out what the app is meant to manage, and make the whole thing run cleanly from index.php.

I want a simple browser based SMS management dashboard where a user can open the site, connect to the database, view the main records, add new records, edit existing ones, delete when needed, and search or filter if the data makes sense. If the schema includes users or admins, add a basic login and logout flow and protect the private pages.

Please wire up the pages, actions, API routes, config, includes, and assets so nothing is broken. Make the interface clean and easy to understand, with helpful error messages instead of blank pages. Also add any setup notes needed so I can import the SQL file and run it locally or deploy it.