- Added a new tools.security.php file containing functions for sanitizing filenames, paths, and user inputs to prevent directory traversal and XSS attacks.
- Updated various files to utilize the new sanitization functions (Sf, Si) for user inputs and file operations, ensuring safer handling of data.
- Improved HTML output safety by applying htmlspecialchars to user-generated content in pre-body.php, cal.php, and other relevant files.
- Refactored user authentication and data retrieval processes in tools.auth.php and _login.php to enhance security and maintainability.
- Ensured consistent use of sanitization functions in API endpoints and admin functionalities to mitigate potential security vulnerabilities.
- Created a new file `diario.php` to manage and display student diaries.
- Implemented user permission checks to restrict access to docentes.
- Added functionality to list students and their diary entries based on selected aulario.
- Included validation for directory paths and error handling for missing data.
- Updated images `alumnos.png` and `yo.png` in the static assets.
