Fix Nala repository setup in setup.sh

- Changed Nala installation approach to use more reliable methods
- First try to use Nala from standard repositories if available
- Fall back to Ubuntu PPA if not available in standard repos
- Removed reliance on the Volian repository key that was causing 404 errors

setup/setup.sh

@@ -18,10 +18,19 @@ echo -e "${YELLOW}Setting up apt repositories...${NC}"
 # Install prerequisites
 sudo apt-get install -y wget gpg apt-transport-https
 
-# Setup Nala repository
+# Setup Nala repository - Try multiple methods
 echo -e "${YELLOW}Setting up Nala repository...${NC}"
-curl -fsSL https://deb.volian.org/volian/scar.key | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/volian-archive-scar.gpg
-echo "deb [arch=$(dpkg --print-architecture)] https://deb.volian.org/volian/ scar main" | sudo tee /etc/apt/sources.list.d/volian-archive-scar.list > /dev/null
+
+# First check if Nala is available in standard repositories (newer Ubuntu versions)
+if apt-cache show nala &>/dev/null; then
+    echo -e "${GREEN}Nala is available in standard repositories${NC}"
+else
+    # Try Ubuntu PPA as an alternative
+    echo -e "${YELLOW}Trying Nala from Ubuntu PPA...${NC}"
+    sudo apt-get update
+    sudo apt-get install -y software-properties-common
+    sudo add-apt-repository -y ppa:volitank/ppa
+fi
 
 # Setup VS Code repository
 echo -e "${YELLOW}Setting up VS Code repository...${NC}"