T1.4: Create src/scheduler; move scheduler logic

Move scheduler.go and scheduler_test.go from src/core to the new
src/scheduler package. The scheduler still takes *[]domain.Job and
*core.Store (storage moves in T1.5). Update src/gui/app.go to import
the new package; rename the local variable to sched to avoid shadowing
the scheduler package name.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/gui/app.go

@@ -16,6 +16,7 @@ import (
 	"gitea.mixdep.ru/mix/gosentry/src/core"
 	"gitea.mixdep.ru/mix/gosentry/src/domain"
 	"gitea.mixdep.ru/mix/gosentry/src/runner"
+	"gitea.mixdep.ru/mix/gosentry/src/scheduler"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/app"
@@ -263,7 +264,7 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 		jobLogs.Refresh()
 		history.Refresh()
 	}
-	var scheduler *core.Scheduler
+	var sched *scheduler.Scheduler
 
 	list := widget.NewList(
 		func() int { return len(filteredJobs) },
@@ -353,8 +354,8 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 			updated := newEvent(saved.ID, saved.Name, "Updated", "Job settings changed")
 			jobs[selected].Logs = append([]event{updated}, jobs[selected].Logs...)
 			events = append(events, updated)
-			if scheduler != nil {
-				scheduler.RefreshSchedule(selected)
+			if sched != nil {
+				sched.RefreshSchedule(selected)
 			}
 			_ = store.SaveJobs(jobs)
 			folderSelect.Options = folderOptions(jobs)
@@ -373,7 +374,7 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 			dialog.ShowInformation("Scheduler paused", "Global pause is active. Resume the scheduler before running jobs.", w)
 			return
 		}
-		if !scheduler.RunNow(selected) {
+		if !sched.RunNow(selected) {
 			return
 		}
 		list.Refresh()
@@ -391,8 +392,8 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 					jobs[index].NextRun = "Scheduler paused"
 				}
 			}
-			if scheduler != nil {
-				scheduler.SetPaused(true)
+			if sched != nil {
+				sched.SetPaused(true)
 			}
 			events = append(events, newEvent(0, "Scheduler", "Paused", "All job execution paused"))
 		} else {
@@ -406,8 +407,8 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 					jobs[index].NextRun = "Waiting for scheduler"
 				}
 			}
-			if scheduler != nil {
-				scheduler.SetPaused(false)
+			if sched != nil {
+				sched.SetPaused(false)
 			}
 			events = append(events, newEvent(0, "Scheduler", "Resumed", "All job execution resumed"))
 		}
@@ -426,8 +427,8 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 			resumed := newEvent(current.ID, current.Name, "Resumed", "Job was enabled")
 			current.Logs = append([]event{resumed}, current.Logs...)
 			events = append(events, resumed)
-			if scheduler != nil {
-				scheduler.RefreshSchedule(selected)
+			if sched != nil {
+				sched.RefreshSchedule(selected)
 			}
 		} else {
 			current.LastState = "Paused"
@@ -435,8 +436,8 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 			paused := newEvent(current.ID, current.Name, "Paused", "Job was disabled")
 			current.Logs = append([]event{paused}, current.Logs...)
 			events = append(events, paused)
-			if scheduler != nil {
-				scheduler.RefreshSchedule(selected)
+			if sched != nil {
+				sched.RefreshSchedule(selected)
 			}
 		}
 		_ = store.SaveJobs(jobs)
@@ -503,13 +504,13 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 		jobLogs,
 	)
 
-	scheduler = core.NewScheduler(store, &jobs, func(record domain.RunRecord) {
+	sched = scheduler.NewScheduler(store, &jobs, func(record domain.RunRecord) {
 		// Scheduled runs happen on the scheduler goroutine. The callback updates
 		// the shared in-memory event list so History reflects background activity.
 		events = append(events, record)
 		refresh()
 	})
-	scheduler.Start()
+	sched.Start()
 
 	fixedSidebar := container.New(minWidthLayout{width: minJobsSidebarWidth}, sidebar)
 	jobsView := container.NewBorder(nil, nil, fixedSidebar, nil, container.NewPadded(details))

src/scheduler/scheduler.go

@@ -1,4 +1,4 @@
-package core
+package scheduler
 
 import (
 	"context"
@@ -7,6 +7,7 @@ import (
 	"sync"
 	"time"
 
+	"gitea.mixdep.ru/mix/gosentry/src/core"
 	"gitea.mixdep.ru/mix/gosentry/src/domain"
 	"gitea.mixdep.ru/mix/gosentry/src/runner"
 	"github.com/robfig/cron/v3"
@@ -19,7 +20,7 @@ var cronParser = cron.NewParser(cron.Minute | cron.Hour | cron.Dom | cron.Month
 // this keeps the early architecture simple while storage and scheduling are
 // still in one desktop process.
 type Scheduler struct {
-	store    *Store
+	store    *core.Store
 	jobs     *[]domain.Job
 	onChange func(domain.RunRecord)
 
@@ -29,7 +30,7 @@ type Scheduler struct {
 	paused bool
 }
 
-func NewScheduler(store *Store, jobs *[]domain.Job, onChange func(domain.RunRecord)) *Scheduler {
+func NewScheduler(store *core.Store, jobs *[]domain.Job, onChange func(domain.RunRecord)) *Scheduler {
 	ctx, cancel := context.WithCancel(context.Background())
 	s := &Scheduler{
 		store:    store,

src/scheduler/scheduler_test.go

@@ -1,4 +1,4 @@
-package core
+package scheduler
 
 import (
 	"strings"