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/impl/bitmap.go

@@ -0,0 +1,34 @@
+// Copyright 2024 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.
+
+//go:build !race
+
+package impl
+
+// There is no additional data as we're not running under race detector.
+type RaceDetectHookData struct{}
+
+// Empty stubs for when not using the race detector. Calls to these from index.go should be optimized away.
+func (presence) raceDetectHookPresent(num uint32)                       {}
+func (presence) raceDetectHookSetPresent(num uint32, size presenceSize) {}
+func (presence) raceDetectHookClearPresent(num uint32)                  {}
+func (presence) raceDetectHookAllocAndCopy(src presence)                {}
+
+// raceDetectHookPresent is called by the generated file interface
+// (*proto.internalFuncs) Present to optionally read an unprotected
+// shadow bitmap when race detection is enabled. In regular code it is
+// a noop.
+func raceDetectHookPresent(field *uint32, num uint32) {}
+
+// raceDetectHookSetPresent is called by the generated file interface
+// (*proto.internalFuncs) SetPresent to optionally write an unprotected
+// shadow bitmap when race detection is enabled. In regular code it is
+// a noop.
+func raceDetectHookSetPresent(field *uint32, num uint32, size presenceSize) {}
+
+// raceDetectHookClearPresent is called by the generated file interface
+// (*proto.internalFuncs) ClearPresent to optionally write an unprotected
+// shadow bitmap when race detection is enabled. In regular code it is
+// a noop.
+func raceDetectHookClearPresent(field *uint32, num uint32) {}