mesh-knowledge: give a never-reviewed notice its resolved line when raised, and test a refused clear and local time in a set zone (review of #219)

The operator's channel edits a cleared message with the resolved line it was raised with, so one sent only with
the clear was never shown.

modules/mesh-knowledge/cmd/mesh-knowledge/kb.go

@@ -64,8 +64,9 @@ type Reserver func(kind, title string) (int, error)
 // the structured answer and who judged.
 type Judgement func(question string, schema map[string]any, model string) (json.RawMessage, string, error)
 
-// Notifier tells the operator's channel something (operator-channel.notify).
-type Notifier func(key, summary, headline, explanation string) error
+// Notifier tells the operator's channel something (operator-channel.notify). Resolved is the line its message says
+// once it is cleared: the channel keeps the one given when it is raised (novox/hq issue 497); "" for none.
+type Notifier func(key, summary, headline, explanation, resolved string) error
 
 // Clearer tells the operator's channel that what it was told under key is over, in one resolved line.
 type Clearer func(key, resolved string) error