release: 0.3.0: PTR fix via public resolvers; monitoring URLs and nav icons

panel: the PTR (reverse DNS) check no longer reports a correctly published
Fixed:
  - panel: the PTR (reverse DNS) check no longer reports a correctly published
Changed:
  - panel: the three monitoring pages now live at URLs that match their nav
  - panel: each entry in the navigation bar now carries an icon beside its label,
  - panel: the navigation bar is laid out as two rows on purpose — the signed-in

Full detail: CHANGELOG.md (0.3.0).

internal/web/middleware.go

@@ -15,7 +15,8 @@ const usernameKey ctxKey = 0
 //
 // It also extends the sliding session (plan B.1) on activity, defined as
 // everything except a GET request carrying HX-Request: the four monitoring
-// fragments (/status/fragment, /queue/body, /logtail/body, /sendlog/rows)
+// fragments (/status/fragment, /mail-queue/body, /system-log/body,
+// /deliveries/rows)
 // poll every 5s regardless of whether anyone is looking at the tab, so
 // counting those as activity would make "N days idle" mean "N days since a
 // browser tab was last open" instead.