Read these source examples as firm statements that the action has occurred.
قَدْ عَلِمَ كُلُّ أُنَاسٍ مَشْرَبَهُمْ
Every group had come to know its drinking place.
قَدْ حَبِطَ عَمَلُهُ
His deed has come to nothing.
قَدْ سَمِعَ اللَّهُ
Allah has indeed heard.
The natural translation changes with the sentence, but the completed or established occurrence remains clear.