p2.7: prometheus /metrics

Default GET /metrics is Prometheus text; JSON stays at /metrics.json
and ?format=json. :8443 needs the metrics caller bearer; loopback
stays open. Restricted callers have no per-caller series and no
tavily:restricted gauge.

vendor/google.golang.org/protobuf/internal/genid/empty_gen.go

@@ -0,0 +1,19 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package genid
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+const File_google_protobuf_empty_proto = "google/protobuf/empty.proto"
+
+// Names for google.protobuf.Empty.
+const (
+	Empty_message_name     protoreflect.Name     = "Empty"
+	Empty_message_fullname protoreflect.FullName = "google.protobuf.Empty"
+)