fix: harden ops runbooks and execution

internal/core/runbook/cancel.go

@@ -0,0 +1,32 @@
+package runbook
+
+import (
+	"context"
+	"sync"
+)
+
+var jobCancelMap sync.Map
+
+func registerJobCancel(jobID uint, cancel context.CancelFunc) {
+	jobCancelMap.Store(jobID, cancel)
+}
+
+func clearJobCancel(jobID uint) {
+	if v, ok := jobCancelMap.Load(jobID); ok {
+		if cancel, ok2 := v.(context.CancelFunc); ok2 {
+			cancel()
+		}
+		jobCancelMap.Delete(jobID)
+	}
+}
+
+func CancelJob(jobID uint) bool {
+	if v, ok := jobCancelMap.Load(jobID); ok {
+		if cancel, ok2 := v.(context.CancelFunc); ok2 {
+			cancel()
+		}
+		jobCancelMap.Delete(jobID)
+		return true
+	}
+	return false
+}