CreateVerificationToken creates a verification token for a user and stores it in the database.

DeleteTask performs a soft delete of a task by marking its status as 'deleted'.

GenerateVerificationToken creates a secure random token for email verification.

GetTask retrieves a single task by its ID.

GetTasks retrieves all active tasks for a specific user.

GetUserByEmail retrieves a user record from the database by email address.

GetUserByID retrieves a user from the database by their unique identifier.

GetUserByResetToken retrieves a user from the database using a password reset token.

GetUserStatistics retrieves aggregated task statistics for a specific user.

GetVerificationTokenForUser retrieves the most recent valid verification token for a user.

ResendVerificationToken creates a new verification token after invalidating existing ones.

VerifyEmail processes an email verification token and updates the user's verification status.

StatusCompleted represents a task that has been finished.

StatusDeleted represents a soft-deleted task.

StatusInProgress represents a task that is currently being worked on.

StatusPending represents a task that hasn't been started.

ValidStatuses defines the list of allowed task statuses for validation.

Task represents a single task in the system.

User represents a registered user in the system.

UserStatistics represents aggregated statistics about a user's tasks.

VerificationToken represents an email verification token.