feat: 自动清理终态 Pod 执行器

internal/podbackend/lifecycle.go

@@ -0,0 +1,32 @@
+package podbackend
+
+import (
+	"context"
+	"time"
+)
+
+// Lifecycle reconciles durable terminal markers into backend cleanup.
+type Lifecycle struct {
+	Backend  Backend
+	Interval time.Duration
+	OnError  func(error)
+}
+
+func (l Lifecycle) Run(ctx context.Context) error {
+	interval := l.Interval
+	if interval <= 0 {
+		interval = 2 * time.Second
+	}
+	for {
+		if _, err := l.Backend.CleanupTerminated(ctx); err != nil && ctx.Err() == nil && l.OnError != nil {
+			l.OnError(err)
+		}
+		timer := time.NewTimer(interval)
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return nil
+		case <-timer.C:
+		}
+	}
+}