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/elastic/gosigar/sigar_darwin_386.go

@@ -0,0 +1,18 @@
+package gosigar
+
+import (
+	"syscall"
+	"time"
+)
+
+func (self *Uptime) Get() error {
+	tv := syscall.Timeval{}
+
+	if err := sysctlbyname("kern.boottime", &tv); err != nil {
+		return err
+	}
+
+	self.Length = time.Since(time.Unix(int64(tv.Sec), int64(tv.Usec)*1000)).Seconds()
+
+	return nil
+}