Module validation 

Input validation for task data

This module provides comprehensive validation functions to ensure data integrity before persisting tasks to storage.

Functions

validate_due_date

Validates due date is not in the past (for new tasks)

validate_project_name

Validates a project name is not empty and within length limits.

validate_recurrence

Validates recurrence pattern has a due date

validate_tags

Validates tags are properly formatted and unique

validate_task

Validates a complete task before saving

validate_task_id

Validates that a task ID is within valid range

validate_task_text

Validates task text is not empty and within length limits