diff --git a/package.json b/package.json
index 9cd7e90ad..55ed8d372 100644
--- a/package.json
+++ b/package.json
@@ -41,6 +41,7 @@
     "rebundle": "node tools/cli/bundlers/bundle-web.js rebundle",
     "test": "npm run test:schemas && npm run test:refs && npm run test:install && npm run validate:schemas && npm run lint && npm run lint:md && npm run format:check",
     "test:coverage": "c8 --reporter=text --reporter=html npm run test:schemas",
+    "test:e2e:install": "bash test/test-cli-install-e2e.sh",
     "test:install": "node test/test-installation-components.js",
     "test:refs": "node test/test-file-refs-csv.js",
     "test:schemas": "node test/test-agent-schema.js",
diff --git a/test/test-cli-install-e2e.sh b/test/test-cli-install-e2e.sh
new file mode 100755
index 000000000..94fd411fc
--- /dev/null
+++ b/test/test-cli-install-e2e.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+# CLI install smoke E2E test.
+# Verifies non-interactive install succeeds in a clean temp project.
+
+set -euo pipefail
+
+echo "========================================"
+echo "CLI Install Smoke E2E"
+echo "========================================"
+echo ""
+
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+NC='\033[0m'
+
+PASSED=0
+FAILED=0
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+TEMP_DIR="$(mktemp -d)"
+
+cleanup() {
+  rm -rf "$TEMP_DIR"
+}
+trap cleanup EXIT
+
+PROJECT_DIR="$TEMP_DIR/e2e-project"
+mkdir -p "$PROJECT_DIR"
+
+echo "Test 1: Non-interactive install succeeds and creates BMAD layout"
+if OUTPUT=$(node "$REPO_ROOT/tools/cli/bmad-cli.js" install \
+  --directory "$PROJECT_DIR" \
+  --modules bmm \
+  --tools none \
+  --yes \
+  --user-name "E2E User" \
+  --communication-language English \
+  --document-output-language English \
+  --output-folder _bmad-output 2>&1); then
+  if [ -d "$PROJECT_DIR/_bmad" ] && [ -f "$PROJECT_DIR/_bmad/_config/manifest.yaml" ]; then
+    if echo "$OUTPUT" | grep -q "clack.box is not a function"; then
+      echo -e "${RED}✗${NC} Install output still contains clack.box runtime error"
+      FAILED=$((FAILED + 1))
+    else
+      echo -e "${GREEN}✓${NC} Install succeeded and created expected structure"
+      PASSED=$((PASSED + 1))
+    fi
+  else
+    echo -e "${RED}✗${NC} Install completed but expected files were not created"
+    FAILED=$((FAILED + 1))
+  fi
+else
+  echo -e "${RED}✗${NC} Install command failed"
+  echo "$OUTPUT"
+  FAILED=$((FAILED + 1))
+fi
+echo ""
+
+echo "========================================"
+echo "Test Results:"
+echo -e "  Passed: ${GREEN}$PASSED${NC}"
+echo -e "  Failed: ${RED}$FAILED${NC}"
+echo "========================================"
+
+if [ "$FAILED" -eq 0 ]; then
+  echo -e "\n${GREEN}✨ CLI install smoke E2E passed!${NC}\n"
+  exit 0
+fi
+
+echo -e "\n${RED}❌ CLI install smoke E2E failed${NC}\n"
+exit 1
diff --git a/tools/cli/lib/prompts.js b/tools/cli/lib/prompts.js
index 24500700b..020d55233 100644
--- a/tools/cli/lib/prompts.js
+++ b/tools/cli/lib/prompts.js
@@ -575,7 +575,26 @@ async function cancel(message = 'Operation cancelled') {
  */
 async function box(content, title, options) {
   const clack = await getClack();
-  clack.box(content, title, options);
+
+  // @clack/prompts v1 does not expose `box`. Keep compatibility with older
+  // wrappers by degrading to `note`, then plain logging if needed.
+  if (typeof clack.box === 'function') {
+    clack.box(content, title, options);
+    return;
+  }
+
+  if (typeof clack.note === 'function') {
+    clack.note(content, title || 'Info');
+    return;
+  }
+
+  if (clack.log && typeof clack.log.message === 'function') {
+    clack.log.message(title ? `${title}\n${content}` : content);
+    return;
+  }
+
+  // Final defensive fallback if prompt APIs are unavailable.
+  console.log(title ? `${title}\n${content}` : content);
 }
 
 /**