Clear the stalled problems out of your ServiceNow backlog

**Objective:** Review the open problem backlog, optionally for `{assignment-group}`, and flag problems that are stale (open more than `{stale-days}` days, default 30), unowned or stuck.

**Step 1: Pull the open problems**

Call `servicenow-get-problem` with assignment-group `{assignment-group}` if given, once for each open state: New, Assess, Root Cause Analysis and Fix in Progress.

**Step 2: Read their tasks**

For each problem call `servicenow-get-problem-task` with problem set to its number. Count open and closed tasks and note the most recent closed date.

**Step 3: Apply the rules**

Flag a problem when:

* it has no assigned-to (Unowned)
* opened is more than `{stale-days}` days ago and it is still in New or Assess (Stalled in triage)
* it is in Root Cause Analysis with no open or closed problem task (No investigation)
* all its tasks are closed but it is not Resolved (Ready to resolve)
* known-error is true (Known error: check a workaround is recorded and a knowledge article exists)
* related-incidents is high relative to the others (High impact)

For each known error call `servicenow-get-knowledge` with short-description.contains set to key words from the problem to see whether an article exists.

**Step 4: Report**

A table: number, short-description, state, priority, assigned-to, age in days, open tasks, related-incidents, flags. Then a short action list grouped by flag.

**Rules & Guidelines:**

* Read-only. Do not call `servicenow-update-problem`, `servicenow-update-problem-task`, `servicenow-add-problem-task` or any other add- or update- tool.

**Validation:**

* If there are no open problems, say so and stop.