feat(surf): serve startup summary, shutdown report and http request log

- serve prints a startup summary on a terminal (version, environment, URL,
  admin, database host and name, pending migrations, plugins, drivers) and
  logs it as a 'startup summary' record plus 'listening on <addr>'
- on SIGINT/SIGTERM serve drains, prints and logs a shutdown report and
  returns nil (exit 0), or the drain errors (exit 1)
- the request log is on by default under diary component http with
  request_id; the route pattern, never the path, is logged
- lagoon.PendingMigrations, conga.Worker.Stats, diary.HideOnTTY,
  bonfire.IsTerminal and bonfire.Details back the summary and report

modules/diary/diary.go

@@ -8,6 +8,7 @@
 package diary
 
 import (
+	"context"
 	"errors"
 	"io"
 	"log"
@@ -225,6 +226,30 @@ func ApplyGlobals(g bonfire.Globals) {
 	SetVerbosity(g.Verbosity, g.Quiet)
 }
 
+type hideOnTTYKey struct{}
+
+// HideOnTTY marks ctx so that a console channel writing to a terminal skips
+// the records logged with it (Logger.InfoContext and the like); daily files,
+// stderr channels and a console that is not a terminal still write them. A
+// command that has just printed the same facts as a styled block (serve's
+// startup summary) logs them with it, so a person does not read them twice
+// while journald and the log files keep them.
+func HideOnTTY(ctx context.Context) context.Context {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	return context.WithValue(ctx, hideOnTTYKey{}, true)
+}
+
+// hiddenOnTTY reports whether ctx carries the HideOnTTY mark.
+func hiddenOnTTY(ctx context.Context) bool {
+	if ctx == nil {
+		return false
+	}
+	v, _ := ctx.Value(hideOnTTYKey{}).(bool)
+	return v
+}
+
 // Verbosity returns the current verbosity (0 by default).
 func Verbosity() int {
 	return int(verbosity.Load())