Implement platform management features

platform/service/server_lifecycle.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"strings"
+	"time"
 
 	"browser.local/platform/domain"
 	"browser.local/platform/repo"
@@ -255,6 +256,14 @@ func (svc *CoreService) dispatchExistingServerLifecycle(command domain.ServerLif
 	if err := svc.validateRunnableEndpoint(endpoint, domain.LifecycleCapabilityForAction(action)); err != nil {
 		return domain.ServerLifecycleResult{}, err
 	}
+	if action == domain.ServerLifecycleActionStart {
+		instance.LifecycleProcessID = ""
+		instance.LifecycleObservationSeq = 0
+		instance.LifecycleObservedAt = time.Time{}
+		if err := svc.store.ServerInstances().Update(instance); err != nil {
+			return domain.ServerLifecycleResult{}, err
+		}
+	}
 
 	job, err := svc.dispatchLifecycleJob(instance, action, command.IdempotencyKey)
 	if err != nil {