# Non-Functional Requirements

## NFR1: Python Development
The application and all scripts must be developed in Python.

## NFR2: SQLite Database
The initial database must be SQLite.

## NFR3: Database-Agnostic Architecture
The data access layer must be architected (e.g., using the Repository Pattern) to be database-agnostic, simplifying a future migration to a more scalable database like PostgreSQL.

## NFR4: Environment Variables
All secrets, credentials, and API keys must be stored in and accessed from a .env file, not hardcoded.

## NFR5: Command-Line Interface
The MVP will be a set of command-line tools; a web-based user interface is explicitly out of scope.

## NFR6: Backup Protection
The interlinking script must create backups of any existing HTML files before modifying them to prevent data loss.

## NFR7: Cloud Integration Libraries
Cloud integrations will use specific libraries: Boto3 for AWS S3 and the Azure SDK for Blob Storage.