[Sandy]

The search was pursuant to a lawful stop.

There's no such Constitutional thing as a "search pursuant to a lawful stop". You're confusing a "search pursuant to a lawful arrest" with the phrase that you just made up. Lawful arrest. Absent a lawful arrest, there should at least be probable cause. This case involved neither.

[VA Advogado]

Lawful arrests generally begin with lawful stops. Once you master logic perhaps we can move on to the legal stuff.