Merge pull request 'fix(installer): propagate wizard gateway failures' (#1134) from fix/wizard-gateway-failure into next

tools/install.sh

@@ -766,9 +766,12 @@ if [[ "$FLAG_CHECK" == "false" ]]; then
         if "$MOSAIC_CMD" wizard; then
           ok "Wizard complete."
         else
-          warn "Wizard exited non-zero."
+          fail "Wizard failed; installation is incomplete."
+          echo "  Completed: framework and CLI installation"
+          echo "  Failed: gateway configuration or admin bootstrap"
           echo "  You can retry with: ${C}mosaic wizard${RESET}"
           echo "  Or run gateway install alone: ${C}mosaic gateway install${RESET}"
+          exit 1
         fi
       fi
     else