Display reasoning for “N/A” values in Support Analytics

When a metric shows N/A (e.g., Avg time to first response, Reply expectations), show an inline “Why?” tooltip that explains the specific cause based on data and settings.

Example reasons:

• No qualifying conversations in the selected date range

• Metric applies only to web messenger (emails excluded)

• Too few data points

• Feature disabled

• Office hours not set

• Filters/time range exclude results

• etc

Include quick links to the relevant settings (e.g., Messenger vs Email scope, Office Hours, Fibi AI/Reply expectations) and show the count of qualifying conversations so admins understand what to change to make the metric compute.