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/github.com/google/go-github/v57/github/without_appengine.go

@@ -0,0 +1,20 @@
+// Copyright 2017 The go-github 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 !appengine
+// +build !appengine
+
+// This file provides glue for making github work without App Engine.
+
+package github
+
+import (
+	"context"
+	"net/http"
+)
+
+func withContext(ctx context.Context, req *http.Request) *http.Request {
+	return req.WithContext(ctx)
+}