Get stats on time spent on tasks during Case Decision Review

[yoomlam]

Description

Get statistics on how much time users' spend on tasks associated with Case Decision Review.

Getting actual time spent working on task will be challenging, so get as close an estimate as possible using AppealViews, Task.assigned_at, updated_at, closed_at and fields in other associated models (e.g., timestamps in RequestIssue, DecisionIssue, AttorneyCaseReview, JudgeCaseReview, but ignore DocumentViews and other Document-related models as this will be addressed in a different ticket). See #12455. For other ideas, see Caseflow Metrics.

Consider using Google Analytics or other user activity logs.

Acceptance criteria

• Report containing stats on time spent on tasks associated with Case Decision Review
• If appropriate, identify more accurate measurements or logging that can be implemented

Background/context/resources

To understand where we can improve timeliness of appeals processing, we need to track how users are spending their time in Caseflow. This ticket is a first dip into measuring this and identifying shortcomings, scoped only to the Case Decision Review process.

Technical notes

[hschallhorn]

Timebox to a 3 as well!

[yoomlam]

See https://ip-10-247-40-83.us-gov-west-1.compute.internal:3000/notebooks/on_host/yoom/Task%20durations-part1.ipynb#Handle-children-tasks for a good start in charting time spent.
Closing this ticket in favor of a new ticket that will create a more general interactive dashboard that will handle:

• cancelled tasks and moved children tasks
• distinguishing time spent on parent vs children tasks