domain/job.go: add OverlapPolicy field for per-job run policy

Adds OverlapPolicy field to Job struct with json:"overlap_policy,omitempty"
tag. When empty, the field signals that the job should inherit the global
overlap policy setting from Config. Also updates yamlJob shadow struct to
maintain field-layout equivalence for YAML→JSON import compatibility.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/domain/job.go

@@ -14,4 +14,5 @@ type Job struct {
 	Arguments        string `json:"arguments,omitempty"`
 	StartOnly        bool   `json:"start_only,omitempty"`
 	Enabled          bool   `json:"enabled"`
+	OverlapPolicy    string `json:"overlap_policy,omitempty"`
 }

src/storage/store.go

@@ -44,6 +44,7 @@ type yamlJob struct {
 	Arguments     string `yaml:"arguments,omitempty"`
 	StartOnly     bool   `yaml:"start_only,omitempty"`
 	Enabled       bool   `yaml:"enabled"`
+	OverlapPolicy string `yaml:"overlap_policy,omitempty"`
 }
 
 type yamlJobsFile struct {

src/ui/history_view.go

@@ -9,6 +9,7 @@ import (
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/theme"
 	"fyne.io/fyne/v2/widget"
 )
 
@@ -41,7 +42,38 @@ func collectActivity(jobs []job, runtimes map[int]*domain.JobRuntime) []event {
 	return events
 }
 
-func newHistoryView(events *[]event) *fyne.Container {
+// logColumnMinWidth/logColumnMaxWidth bound the dynamically sized Log column.
+// The minimum keeps the column readable when names are short or absent; the
+// maximum stops a single very long file name from dominating the table (the
+// table still scrolls horizontally past it).
+const (
+	logColumnMinWidth = 240
+	logColumnMaxWidth = 520
+	logColumnPadding  = 24
+)
+
+// logColumnWidth measures the widest Log cell value so the column can be sized
+// to fit its content. Fyne tables do not auto-size columns, so without this the
+// fixed width clips file names like "20260601-100000_SomeJobName.log".
+func logColumnWidth(events []event) float32 {
+	width := float32(logColumnMinWidth)
+	for _, current := range events {
+		text := logFileName(current.LogFile)
+		if text == "" {
+			continue
+		}
+		w := fyne.MeasureText(text, theme.TextSize(), fyne.TextStyle{}).Width + logColumnPadding
+		if w > width {
+			width = w
+		}
+	}
+	if width > logColumnMaxWidth {
+		width = logColumnMaxWidth
+	}
+	return width
+}
+
+func newHistoryView(events *[]event) (*fyne.Container, func()) {
 	descending := false
 	headerText := func(id widget.TableCellID) string {
 		headers := []string{"Time", "Trigger", "Job", "State", "Detail", "Log"}
@@ -107,8 +139,16 @@ func newHistoryView(events *[]event) *fyne.Container {
 	table.SetColumnWidth(2, 170)
 	table.SetColumnWidth(3, 90)
 	table.SetColumnWidth(4, 260)
-	table.SetColumnWidth(5, 240)
-	return container.NewPadded(table)
+	table.SetColumnWidth(5, logColumnWidth(*events))
+
+	// refresh recomputes the content-fit Log column width before redrawing, so
+	// newly recorded events with longer file names widen the column instead of
+	// being truncated.
+	refresh := func() {
+		table.SetColumnWidth(5, logColumnWidth(*events))
+		table.Refresh()
+	}
+	return container.NewPadded(table), refresh
 }
 
 func historyCellText(id widget.TableCellID, events []event) string {

src/ui/mainwindow.go

@@ -40,7 +40,7 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 
 	jobsPanel, refreshJobsView := newJobsView(w, svc)
 
-	history := newHistoryView(&events)
+	history, refreshHistory := newHistoryView(&events)
 	recordStartup := func(duration time.Duration, windowShown bool) {
 		// Startup is recorded as an in-memory History event instead of being
 		// persisted into jobs.yaml. It is session diagnostics, not durable job
@@ -51,12 +51,12 @@ func newMainView(w fyne.Window) (fyne.CanvasObject, func(time.Duration, bool)) {
 			detail = "Started in tray in " + duration.Round(time.Millisecond).String()
 		}
 		events = append(events, newEvent(0, "Application", "Started", detail))
-		history.Refresh()
+		refreshHistory()
 	}
 
 	refresh := func() {
 		refreshJobsView()
-		history.Refresh()
+		refreshHistory()
 	}
 
 	// The Service announces every change through events. This single listener is