WIP: Save agent roles integration work before CHORUS rebrand

- Agent roles and coordination features
- Chat API integration testing
- New configuration and workspace management

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/go.opentelemetry.io/otel/propagation/baggage.go

@@ -0,0 +1,77 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package propagation // import "go.opentelemetry.io/otel/propagation"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/baggage"
+)
+
+const baggageHeader = "baggage"
+
+// Baggage is a propagator that supports the W3C Baggage format.
+//
+// This propagates user-defined baggage associated with a trace. The complete
+// specification is defined at https://www.w3.org/TR/baggage/.
+type Baggage struct{}
+
+var _ TextMapPropagator = Baggage{}
+
+// Inject sets baggage key-values from ctx into the carrier.
+func (b Baggage) Inject(ctx context.Context, carrier TextMapCarrier) {
+	bStr := baggage.FromContext(ctx).String()
+	if bStr != "" {
+		carrier.Set(baggageHeader, bStr)
+	}
+}
+
+// Extract returns a copy of parent with the baggage from the carrier added.
+// If carrier implements [ValuesGetter] (e.g. [HeaderCarrier]), Values is invoked
+// for multiple values extraction. Otherwise, Get is called.
+func (b Baggage) Extract(parent context.Context, carrier TextMapCarrier) context.Context {
+	if multiCarrier, ok := carrier.(ValuesGetter); ok {
+		return extractMultiBaggage(parent, multiCarrier)
+	}
+	return extractSingleBaggage(parent, carrier)
+}
+
+// Fields returns the keys who's values are set with Inject.
+func (b Baggage) Fields() []string {
+	return []string{baggageHeader}
+}
+
+func extractSingleBaggage(parent context.Context, carrier TextMapCarrier) context.Context {
+	bStr := carrier.Get(baggageHeader)
+	if bStr == "" {
+		return parent
+	}
+
+	bag, err := baggage.Parse(bStr)
+	if err != nil {
+		return parent
+	}
+	return baggage.ContextWithBaggage(parent, bag)
+}
+
+func extractMultiBaggage(parent context.Context, carrier ValuesGetter) context.Context {
+	bVals := carrier.Values(baggageHeader)
+	if len(bVals) == 0 {
+		return parent
+	}
+	var members []baggage.Member
+	for _, bStr := range bVals {
+		currBag, err := baggage.Parse(bStr)
+		if err != nil {
+			continue
+		}
+		members = append(members, currBag.Members()...)
+	}
+
+	b, err := baggage.New(members...)
+	if err != nil || b.Len() == 0 {
+		return parent
+	}
+	return baggage.ContextWithBaggage(parent, b)
+}