Centralize Route Protection for Task Mutation Endpoints

[ash1shkumar]

📝 Description

This PR refactors the task routing layer by centralizing authentication handling for all mutation endpoints. Previously, authorization middleware was attached individually to each protected route, which increased duplication and made future route maintenance more error-prone.

The updated implementation introduces a dedicated protected routing flow, ensuring that all task modification operations consistently pass through the same authentication mechanism.

Key Improvements

• Centralized authentication enforcement for task mutation routes
• Reduced middleware duplication across protected endpoints
• Standardized authorization flow for task operations
• Improved route maintainability and scalability
• Reduced risk of authorization inconsistencies as new routes are added

Impact

This change strengthens routing consistency and provides a cleaner foundation for future task-related endpoints while preserving existing functionality.

🎯 Type of Change

• ♻️ Refactoring

✅ Testing

• Verified public task retrieval route remains accessible
• Verified authenticated task creation functionality
• Verified authenticated task update functionality
• Verified authenticated task deletion functionality
• Confirmed authorization behavior remains unchanged after refactor

Fixes #221

Expected Labels

level3 NSoC'26

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