P4.2: Add Browse button for Command field in job dialog

Add chooseFile helper (dialog.NewFileOpen) in settings_view.go and wrap
the Command entry in job_dialog.go with a Browse button so users can
pick an executable from a file picker instead of typing the path.

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

docs/PRE-RELEASE-TASKS.md

@@ -102,7 +102,7 @@ These land together because both edit `domain/job.go` and `storage/store.go`.
 
 ### Phase 4 — Notifications + Command browse
 - [x] P4.1 — Failure notifications
-- [ ] P4.2 — Command Browse button
+- [x] P4.2 — Command Browse button
 
 ### Phase 5 — Icons
 - [ ] P5.1 — Embed small icon + `IconSmall()`

src/ui/job_dialog.go

@@ -7,7 +7,9 @@ import (
 	"gitea.mixdep.ru/mix/gosentry/src/domain"
 
 	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/dialog"
+	"fyne.io/fyne/v2/theme"
 	"fyne.io/fyne/v2/widget"
 )
 
@@ -27,6 +29,10 @@ func showJobDialog(w fyne.Window, title string, current job, onSave func(job)) {
 	commandEntry := widget.NewEntry()
 	commandEntry.SetPlaceHolder(`C:\Program Files\App\App.exe`)
 	commandEntry.SetText(current.Command)
+	commandBrowse := widget.NewButtonWithIcon("Browse", theme.FolderOpenIcon(), func() {
+		chooseFile(w, commandEntry)
+	})
+	commandRow := container.NewBorder(nil, nil, nil, commandBrowse, commandEntry)
 	argumentsEntry := widget.NewMultiLineEntry()
 	argumentsEntry.SetPlaceHolder(`D:\Local\Jobs\Auto.ffs_batch`)
 	argumentsEntry.SetText(current.Arguments)
@@ -43,7 +49,7 @@ func showJobDialog(w fyne.Window, title string, current job, onSave func(job)) {
 			widget.NewFormItem("Name", name),
 			widget.NewFormItem("Folder", folderEntry),
 			widget.NewFormItem("Schedule", scheduleEntry),
-			widget.NewFormItem("Command", commandEntry),
+			widget.NewFormItem("Command", commandRow),
 			widget.NewFormItem("Arguments", argumentsEntry),
 			widget.NewFormItem("", startOnly),
 			widget.NewFormItem("", enabled),

src/ui/settings_view.go

@@ -172,6 +172,17 @@ func mustParseURL(raw string) *url.URL {
 	return parsed
 }
 
+func chooseFile(w fyne.Window, target *widget.Entry) {
+	fileDialog := dialog.NewFileOpen(func(uri fyne.URIReadCloser, err error) {
+		if err != nil || uri == nil {
+			return
+		}
+		target.SetText(uri.URI().Path())
+	}, w)
+	fileDialog.Resize(fyne.NewSize(900, 640))
+	fileDialog.Show()
+}
+
 func chooseFolder(w fyne.Window, target *widget.Entry) {
 	folderDialog := dialog.NewFolderOpen(func(uri fyne.ListableURI, err error) {
 		if err != nil || uri == nil {