fix(scheduler): skip the update on a one-time task it just deleted

executeTask deleted a one-time task and then fell through to
store.Update on the same row. The update could never find it, so every
one-time task logged "Failed to update task: task not found" as it
finished.

The one-time branch now returns after the delete.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KZaoEXfGsjmkhXtVxtvPp4

core/scheduler/onetime_test.go

@@ -0,0 +1,98 @@
+package scheduler_test
+
+import (
+	"os"
+	"sync"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/mudler/LocalAGI/core/scheduler"
+)
+
+// recordingStore notes which mutating calls the scheduler makes, so a spec can
+// assert on the sequence rather than on a log line.
+type recordingStore struct {
+	scheduler.TaskStore
+
+	mu    sync.Mutex
+	calls []string
+}
+
+func (r *recordingStore) record(call string) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.calls = append(r.calls, call)
+}
+
+func (r *recordingStore) Calls() []string {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	return append([]string(nil), r.calls...)
+}
+
+func (r *recordingStore) Delete(id string) error {
+	r.record("delete:" + id)
+	return r.TaskStore.Delete(id)
+}
+
+func (r *recordingStore) Update(task *scheduler.Task) error {
+	r.record("update:" + task.ID)
+	return r.TaskStore.Update(task)
+}
+
+var _ = Describe("One-time task execution", func() {
+	var store *recordingStore
+	var sched *scheduler.Scheduler
+
+	BeforeEach(func() {
+		f, err := os.CreateTemp("", "onetime_test_*.json")
+		Expect(err).NotTo(HaveOccurred())
+		name := f.Name()
+		f.Close()
+		DeferCleanup(func() { os.Remove(name) })
+
+		base, err := scheduler.NewJSONStore(name)
+		Expect(err).NotTo(HaveOccurred())
+
+		store = &recordingStore{TaskStore: base}
+		sched = scheduler.NewScheduler(store, &MockExecutor{}, 50*time.Millisecond)
+		sched.Start()
+		DeferCleanup(sched.Stop)
+	})
+
+	// The update used to run unconditionally after the delete, so every
+	// one-time task logged "task not found" on the way out.
+	It("does not update a one-time task after deleting it", func() {
+		task, err := scheduler.NewTask("agent", "ping", scheduler.ScheduleTypeOnce, "0s")
+		Expect(err).NotTo(HaveOccurred())
+		task.NextRun = time.Now().Add(-time.Second)
+
+		_, err = sched.CreateTask(task)
+		Expect(err).NotTo(HaveOccurred())
+
+		Eventually(func() []string {
+			return store.Calls()
+		}, "3s", "50ms").Should(ContainElement("delete:" + task.ID))
+
+		Consistently(func() []string {
+			return store.Calls()
+		}, "300ms", "50ms").ShouldNot(ContainElement("update:" + task.ID))
+	})
+
+	It("still reschedules a recurring task after it runs", func() {
+		task, err := scheduler.NewTask("agent", "ping", scheduler.ScheduleTypeCron, "* * * * *")
+		Expect(err).NotTo(HaveOccurred())
+		task.NextRun = time.Now().Add(-time.Second)
+
+		_, err = sched.CreateTask(task)
+		Expect(err).NotTo(HaveOccurred())
+
+		Eventually(func() []string {
+			return store.Calls()
+		}, "3s", "50ms").Should(ContainElement("update:" + task.ID))
+
+		Expect(store.Calls()).ToNot(ContainElement("delete:" + task.ID))
+	})
+})

core/scheduler/scheduler.go

@@ -160,17 +160,19 @@ func (s *Scheduler) executeTask(task *Task) {
 	now := time.Now()
 	task.LastRun = &now
 
-	// For one-time tasks, mark as deleted
+	// A one-time task is done once it has run. Returning here matters: the
+	// update below would otherwise run against the row just deleted and log a
+	// "task not found" error on every one-time task.
 	if task.ScheduleType == ScheduleTypeOnce {
 		if err := s.store.Delete(task.ID); err != nil {
 			xlog.Error("Failed to delete task", "task_id", task.ID, "error", err)
 		}
-	} else {
-		// Calculate next run
-		if err := task.CalculateNextRun(); err != nil {
-			xlog.Error("Failed to calculate next run", "task_id", task.ID, "error", err)
-			task.Status = TaskStatusPaused
-		}
+		return
+	}
+
+	if err := task.CalculateNextRun(); err != nil {
+		xlog.Error("Failed to calculate next run", "task_id", task.ID, "error", err)
+		task.Status = TaskStatusPaused
 	}
 
 	if err := s.store.Update(task); err != nil {