me: call report email (hourly, daily, weekly), with call summaries

My settings → Call report: each user's calls of the last hour, day (at a time) or week (on a
day at a time), company time zone: numbers, status, talk time, recorded, and optionally each
recorded call's summary (10 §3). No calls, no email. Job callReports every minute, 5 min after
the period ends; periods computed in PostgreSQL (DST-safe). Migration 0008_call_reports.

docs/admin-guide/ai.md

@@ -73,7 +73,7 @@ on, each recorded call is also recorded one side at a time, and a minute or two
 
 On the **Recordings** page each call shows its summary, **Show transcript**, and the search box
 finds calls by what was said. People who were on a call can read its transcript too, like they can
-play its recording.
+play its recording, and get its summary in their call report email (My settings → Call report).
 
 - Only calls that are recorded are written out (user record modes, phone numbers, queues and
   conference rooms set to record), and only those recorded while it's on.