P3.4: Add Queue group to settings view

Add Execution mode and Overlap policy widget.Select controls in
ui/settings_view.go under a new Queue section group, between the
Application and Storage sections. Both selects are primed from the
current config on open and their selected values are written back into
the config struct on save, passing through the existing UpdateSettings
validation path.

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

src/ui/settings_view.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"gitea.mixdep.ru/mix/gosentry/src/app"
+	"gitea.mixdep.ru/mix/gosentry/src/domain"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
@@ -46,6 +47,16 @@ func settingsView(w fyne.Window, svc *app.Service) fyne.CanvasObject {
 	minimizeToTray.SetChecked(store.Config.KeepRunningInTray)
 	notifications := widget.NewCheck("Show desktop notifications for failed jobs", nil)
 	notifications.SetChecked(store.Config.NotifyOnFailure)
+	executionModeSelect := widget.NewSelect(
+		[]string{string(domain.ExecutionModeParallel), string(domain.ExecutionModeSequential)},
+		nil,
+	)
+	executionModeSelect.SetSelected(string(store.Config.ExecutionMode))
+	overlapPolicySelect := widget.NewSelect(
+		[]string{string(domain.OverlapPolicySkip), string(domain.OverlapPolicyQueue)},
+		nil,
+	)
+	overlapPolicySelect.SetSelected(string(store.Config.OverlapPolicy))
 	jobsDir := widget.NewEntry()
 	jobsDir.SetText(store.Config.JobsDir)
 	jobsDirBrowse := widget.NewButtonWithIcon("Browse", theme.FolderOpenIcon(), func() {
@@ -92,6 +103,8 @@ func settingsView(w fyne.Window, svc *app.Service) fyne.CanvasObject {
 		config.StartOnLogin = startOnLogin.Checked
 		config.KeepRunningInTray = minimizeToTray.Checked
 		config.NotifyOnFailure = notifications.Checked
+		config.ExecutionMode = domain.ExecutionMode(executionModeSelect.Selected)
+		config.OverlapPolicy = domain.OverlapPolicy(overlapPolicySelect.Selected)
 		if err := svc.UpdateSettings(config); err != nil {
 			settingsStatus.SetText("Save failed: " + err.Error())
 			return
@@ -111,6 +124,10 @@ func settingsView(w fyne.Window, svc *app.Service) fyne.CanvasObject {
 		settingsRow("Tray", container.New(minWidthLayout{width: settingsControlWidth}, minimizeToTray)),
 		settingsRow("Notifications", container.New(minWidthLayout{width: settingsControlWidth}, notifications)),
 		widget.NewSeparator(),
+		widget.NewLabelWithStyle("Queue", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}),
+		settingsRow("Execution mode", container.New(minWidthLayout{width: settingsControlWidth}, executionModeSelect)),
+		settingsRow("Overlap policy", container.New(minWidthLayout{width: settingsControlWidth}, overlapPolicySelect)),
+		widget.NewSeparator(),
 		widget.NewLabelWithStyle("Storage", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}),
 		settingsRow("Config YAML", widget.NewLabel(store.Paths.ConfigPath)),
 		settingsRow("Jobs directory", container.NewBorder(nil, nil, nil, jobsDirBrowse, jobsDir)),