Remove automatic deployment prompt from setup script

Changes:
- scripts/setup-homelab.sh: Remove interactive deployment prompt
  - Users must now run deploy script manually
  - Simplifies both scripts (no sudo workarounds needed)
  - Clearer two-step process: setup then deploy

- Documentation updates:
  - README.md: Updated step 3-4 with manual deployment
  - docs/getting-started.md: Removed step 6 (log out), clarified steps
  - docs/manual-setup.md: Added sudo to deploy command
  - docs/troubleshooting/COMMON-ISSUES.md: Added sudo to all deploy commands

Rationale:
- Automatic deployment via 'su -' cannot work with sudo requirement
- Manual two-step process is clearer and more reliable
- Setup focuses on configuration, deploy focuses on services

scripts/setup-homelab.sh

@@ -587,43 +587,14 @@ echo ""
 log_info "Setup complete!"
 echo ""
 
-# Prompt to run deployment script
-if [ "${NVIDIA_REBOOT_NEEDED:-false}" != true ]; then
-    echo ""
-    read -p "Would you like to run the deployment script now? [Y/n]: " -n 1 -r RUN_DEPLOY
-    echo ""
-    
-    # Default to yes if empty
-    RUN_DEPLOY=${RUN_DEPLOY:-Y}
-    
-    if [[ $RUN_DEPLOY =~ ^[Yy]$ ]]; then
-        log_info "Starting deployment script..."
-        echo ""
-        
-        # Check if user needs to log out first for Docker group
-        if ! groups "$ACTUAL_USER" | grep -q docker; then
-            log_warning "You need to log out and back in for Docker group permissions."
-            log_info "Run this command after logging back in:"
-            echo ""
-            echo "  cd ~/AI-Homelab && ./scripts/deploy-homelab.sh"
-            echo ""
-        else
-            # Run deployment script as the actual user with sudo
-            cd "$(dirname "$0")/.." || exit 1
-            su - "$ACTUAL_USER" -c "cd $PWD && sudo ./scripts/deploy-homelab.sh"
-        fi
-    else
-        log_info "Deployment skipped. Run it manually when ready:"
-        echo ""
-        echo "  cd ~/AI-Homelab"
-        echo "  ./scripts/deploy-homelab.sh"
-        echo ""
-    fi
-else
+# Instructions for deployment
+if [ "${NVIDIA_REBOOT_NEEDED:-false}" = true ]; then
     log_info "Please reboot your system for NVIDIA drivers, then run:"
-    echo ""
-    echo "  cd ~/AI-Homelab"
-    echo "  ./scripts/deploy-homelab.sh"
-    echo ""
+else
+    log_info "Next step - deploy your homelab services:"
 fi
+echo ""
+echo "  cd ~/AI-Homelab"
+echo "  sudo ./scripts/deploy-homelab.sh"
+echo ""