fix: patch ofxPiMapper VideoSource.h to use std::unique_ptr for C++20 compatibility

scripts/setup.sh

@@ -255,7 +255,14 @@ if [ -f src/Osc/OscControl.cpp ]; then
       return; \
   }' src/Osc/OscControl.cpp
   fi
-fi
+  fi
+
+  # Patch for unique_ptr namespace issue in VideoSource.h
+  if [ -f src/Sources/VideoSource.h ]; then
+  echo "Applying std:: namespace patch to VideoSource.h..."
+  sed -i 's/unique_ptr/std::unique_ptr/g' src/Sources/VideoSource.h
+  fi
+  fi
 
 # Build Example (Clean call - let OF detect platform, but ignore Trixie compiler strictness)
 cd "$REAL_HOME/openFrameworks/addons/ofxPiMapper/example_basic"