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/mikioh/tcpopt/sys_stub.go

@@ -0,0 +1,73 @@
+// Copyright 2016 Mikio Hara. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package tcpopt
+
+import "errors"
+
+var options [soMax]option
+
+var parsers = map[int64]func([]byte) (Option, error){}
+
+// Marshal implements the Marshal method of Option interface.
+func (nd NoDelay) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (mss MSS) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (sb SendBuffer) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (rb ReceiveBuffer) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (ka KeepAlive) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (ka KeepAliveIdleInterval) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (ka KeepAliveProbeInterval) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (ka KeepAliveProbeCount) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (ck Cork) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (ns NotSentLowWMK) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (e Error) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}
+
+// Marshal implements the Marshal method of Option interface.
+func (cn ECN) Marshal() ([]byte, error) {
+	return nil, errors.New("operation not supported")
+}