Config view: Test connections below the service settings; hide a stale cursor

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/ui/form.go

@@ -262,3 +262,56 @@ func (h *formHeading) Draw(screen tcell.Screen) {
 	x, y, w, _ := h.GetInnerRect()
 	tview.Print(screen, "[::b]"+tview.Escape(h.title)+"[::-]", x, y+1, w, tview.AlignLeft, tcell.ColorYellow)
 }
+
+// formAction is a button inside a form's list of fields, so it can sit between
+// sections instead of at the end. Enter or Space presses it.
+type formAction struct {
+	*tview.Button
+	labelWidth int
+	finished   func(tcell.Key)
+}
+
+func newFormAction(label string, pressed func()) *formAction {
+	a := &formAction{Button: tview.NewButton(label)}
+	a.SetSelectedFunc(pressed)
+	return a
+}
+
+func (a *formAction) GetLabel() string { return "" } // the button text is its own label
+
+func (a *formAction) SetFormAttributes(labelWidth int, _, _, _, _ tcell.Color) tview.FormItem {
+	a.labelWidth = labelWidth
+	return a
+}
+
+func (a *formAction) GetFieldWidth() int { return tview.TaggedStringWidth(a.GetLabel()) + 4 }
+
+// GetFieldHeight is 2: an empty line above the button.
+func (a *formAction) GetFieldHeight() int { return 2 }
+
+func (a *formAction) SetFinishedFunc(handler func(key tcell.Key)) tview.FormItem {
+	a.SetExitFunc(handler) // Tab, Shift+Tab and Esc
+	a.finished = handler
+	return a
+}
+
+func (a *formAction) SetDisabled(disabled bool) tview.FormItem {
+	a.Button.SetDisabled(disabled)
+	return a
+}
+
+// SetRect places the button under the field column, one line down, as wide as its text.
+func (a *formAction) SetRect(x, y, width, height int) {
+	w := min(max(width-a.labelWidth, 0), tview.TaggedStringWidth(a.Button.GetLabel())+4)
+	a.Button.SetRect(x+a.labelWidth, y+1, w, 1)
+}
+
+func (a *formAction) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+	inner := a.Button.InputHandler()
+	return func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+		if event.Key() == tcell.KeyRune && event.Rune() == ' ' {
+			event = tcell.NewEventKey(tcell.KeyEnter, 0, 0)
+		}
+		inner(event, setFocus)
+	}
+}