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/marten-seemann/tcp/sys_linux_s390x.go

@@ -0,0 +1,44 @@
+// Copyright 2017 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.
+
+package tcp
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+const (
+	sysSIOCINQ  = 0x541b
+	sysSIOCOUTQ = 0x5411
+)
+
+func ioctl(s uintptr, ioc int, b []byte) error {
+	if _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, s, uintptr(ioc), uintptr(unsafe.Pointer(&b[0]))); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+const (
+	sysSETSOCKOPT = 0xe
+	sysGETSOCKOPT = 0xf
+)
+
+func socketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+	if _, errno := socketcall(sysSETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0); errno != 0 {
+		return error(errno)
+	}
+	return nil
+}
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+	l := uint32(len(b))
+	if _, errno := socketcall(sysGETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0); errno != 0 {
+		return int(l), error(errno)
+	}
+	return int(l), nil
+}