أَنْتَ لَا تَكْذِبُ
You do not lie.
Putting «anta» first can reinforce the negative assertion about the listener. It does not assert that everyone else is a liar. Fronting here does not necessarily create a contrastive restriction.
لَا تَكْذِبُ أَنْتَ
You do not lie.
The second arrangement places the independent pronoun differently and may produce a different emphasis. The comparison shows why word order and the type of predication must be considered before declaring a restrictive sense.