feat(office): users admin UI, table rendering, and user save fixes

Add Users list/detail with ACL toggles and library people update/status APIs.
Fix project table layout and ANSI-safe cell rendering, and decode array
responses from people/status so saves no longer fail on JSON unmarshal.

Co-authored-by: Cursor <cursoragent@cursor.com>

cmd/office/model/nav.go

@@ -66,8 +66,7 @@ func DefaultNavTree() *NavTree {
 	add("mail.trash", "Trash", "mail", false, &ListSpec{Subject: SubjectMailTrash})
 	add("mail.spam", "Spam", "mail", false, &ListSpec{Subject: SubjectMailSpam})
 
-	add("users", "Users", "", true, nil)
-	add("users.dir", "Directory", "users", false, &ListSpec{Subject: SubjectUsers})
+	add("users", "Users", "", false, &ListSpec{Subject: SubjectUsers})
 
 	t.rebuildVisible()
 	return t