Fix: do not delete tool calls or lose them on copy

main.go

@@ -16,7 +16,7 @@ var (
 	shellHistory      []string
 	shellHistoryPos   int = -1
 	thinkingCollapsed     = false
-	toolCollapsed         = false
+	toolCollapsed         = true
 	statusLineTempl       = "help (F12) | chat: [orange:-:b]%s[-:-:-] (F1) | [%s:-:b]tool use[-:-:-] (ctrl+k) | model: [%s:-:b]%s[-:-:-] (ctrl+l) | [%s:-:b]skip LLM resp[-:-:-] (F10)\nAPI: [orange:-:b]%s[-:-:-] (ctrl+v) | writing as: [orange:-:b]%s[-:-:-] (ctrl+q) | bot will write as [orange:-:b]%s[-:-:-] (ctrl+x)"
 	focusSwitcher         = map[tview.Primitive]tview.Primitive{}
 )