admin: System page with restart steps, Record calls on the Calling tab

System shows whether telephony runs and needs a restart, and how to restart it
(docker compose restart asterisk); the dashboard's restart warning, the Network hint and
the public IP email point there. The user drawer's Calling tab gets the Record calls
select the spec listed (recordMode, already in the dialplan). e2e m11-system.mjs.

Task: M11-T7

docs/admin-guide/legal.md

@@ -73,14 +73,18 @@ Recording calls without the right consent can be a crime. In the US:
 
 - **Nothing is recorded unless you turn it on.** You can record:
   - every call to a number (**Phone numbers → Record every call**);
-  - a queue's calls (the queue's **Record calls** switch).
+  - a queue's calls (the queue's **Record calls** switch);
+  - one person's calls with outside numbers (Users & Extensions → the user → **Calling** →
+    **Record calls**: calls from outside, calls to outside, or both).
   The setup wizard never turns recording on.
 - **Settings → Recording → "Notice played before a recorded call"** plays a sound you upload
   (e.g. "This call may be recorded for quality and training") to everyone who calls a number set
   to record, before anything else. Upload it on **Sounds & music**.
-- **Queue recordings play no notice of their own.** If you record a queue, send its callers
-  through a number that plays the notice, or through an announcement that says it
-  (**Sounds & music → Announcements**: play a sound, then go to the queue).
+- **Queue and per-person recordings play no notice of their own.** Only numbers set to record
+  play it. If you record a queue or a person, make sure the callers still hear it: send them through
+  a number that plays the notice, or through an announcement that says it (**Sounds & music →
+  Announcements**: play a sound, then go on). For calls a person makes to the outside, tell them to
+  say the call is recorded.
 - **Retention.** Recordings and voicemail are deleted after the number of days you set there.
   0 keeps them.