Complete PDF Sort and Merge Flask Application

- Full-featured web application for PDF processing
- Microsoft Entra (Azure AD) authentication with PKCE
- Parallel PDF sorting and merging capabilities
- Job management system with real-time progress tracking
- Modern web UI with responsive design
- Comprehensive error handling and logging
- Ubuntu installation script for easy deployment
- Environment configuration for secure credential management

.env.example

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+# Microsoft Entra (Azure AD) Configuration
+# Copy this file to .env and fill in your actual values
+
+# Azure AD Tenant ID (Directory ID)
+AZURE_TENANT_ID=
+
+# Azure AD Client ID (Application ID)
+AZURE_CLIENT_ID=
+
+# Azure AD Client Secret
+AZURE_CLIENT_SECRET=
+
+# Azure AD Authority URL (usually https://login.microsoftonline.com/{tenant_id})
+AZURE_AUTHORITY=
+
+# Redirect URI (must match what's configured in Azure AD app registration)
+AZURE_REDIRECT_URI=http://localhost:5000/auth/callback
+
+# Scopes to request (openid, profile, email are common)
+AZURE_SCOPES=openid profile email
+
+# Flask Configuration
+SECRET_KEY=your-secret-key-here-change-this-in-production