Split into server/ and client/ with separate requirements.txt

Move client.py and gui_client.py into client/, split root requirements.txt
into server/requirements.txt and client/requirements.txt, update install.sh
to reference server/requirements.txt.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/requirements.txt

@@ -0,0 +1,3 @@
+PyQt5
+pyqtgraph
+jaydiff @ git+http://192.168.22.90:3001/jayfield/jaypy.git

install.sh

@@ -53,7 +53,7 @@ fi
 
 echo "==> Installing / updating dependencies"
 "$VENV/bin/pip" install --quiet --upgrade pip
-"$VENV/bin/pip" install --quiet --upgrade -r "$SCRIPT_DIR/requirements.txt"
+"$VENV/bin/pip" install --quiet --upgrade -r "$SCRIPT_DIR/server/requirements.txt"
 echo "    Python  : $PYTHON"
 echo ""
 

server/requirements.txt

@@ -1,6 +1,3 @@
 carconnectivity
 carconnectivity-connector-volkswagen
 jaydiff @ git+http://192.168.22.90:3001/jayfield/jaypy.git
-PyQt5
-pyqtgraph
-pytest