fix updating

Overlord-Client/cmd/agent/handlers/agent_update.go

@@ -12,6 +12,7 @@ import (
 	"strings"
 	"time"
 
+	"overlord-client/cmd/agent/mutex"
 	"overlord-client/cmd/agent/persistence"
 	agentRuntime "overlord-client/cmd/agent/runtime"
 	"overlord-client/cmd/agent/wire"
@@ -44,6 +45,7 @@ func HandleAgentUpdate(ctx context.Context, env *agentRuntime.Env, cmdID string,
 		defer recoverAndLog("agent update", nil)
 		// Let the command_result flush before beginning process replacement.
 		time.Sleep(250 * time.Millisecond)
+		mutex.ReleaseGlobal()
 		if err := runAgentUpdate(sourceAbs, env.Cfg.EnablePersistence, hideWindow); err != nil {
 			log.Printf("agent_update: %v", err)
 			return

Overlord-Client/cmd/agent/main.go

@@ -42,6 +42,7 @@ func main() {
 		return
 	}
 	defer releaseMutex()
+	mutex.SetGlobalRelease(releaseMutex)
 
 	for {
 		func() {

Overlord-Client/cmd/agent/mutex/mutex.go

@@ -3,10 +3,32 @@ package mutex
 import (
 	"fmt"
 	"strings"
+	"sync"
 )
 
 const maxMutexLength = 64
 
+var (
+	globalRelease func()
+	globalMu      sync.Mutex
+)
+
+func SetGlobalRelease(fn func()) {
+	globalMu.Lock()
+	globalRelease = fn
+	globalMu.Unlock()
+}
+
+func ReleaseGlobal() {
+	globalMu.Lock()
+	fn := globalRelease
+	globalRelease = nil
+	globalMu.Unlock()
+	if fn != nil {
+		fn()
+	}
+}
+
 func sanitizeName(name string) (string, error) {
 	trimmed := strings.TrimSpace(name)
 	if trimmed == "" {