[ENV-4] Add environment verification script for reproducible testing

- Add verify-env.sh script to test .env file loading
- Verify GOOGLE_API_KEY is accessible in container
- Check docker-compose config and container environment
- Ensure Python can access environment variables via os.environ
- Provides reproducible verification process for development

scripts/verify-env.sh

@@ -0,0 +1,74 @@
+#!/bin/bash
+# Verification script to ensure .env file is properly loaded into container
+# This script verifies that GOOGLE_API_KEY is accessible in the ComfyUI container
+
+set -e
+
+echo "=== Environment Variable Verification ==="
+echo ""
+
+# Check if .env file exists
+if [ ! -f ".env" ]; then
+    echo "ERROR: .env file not found in current directory"
+    exit 1
+fi
+echo "PASS: .env file exists"
+
+# Check if GOOGLE_API_KEY is in .env file
+if ! grep -q "^GOOGLE_API_KEY=" .env; then
+    echo "ERROR: GOOGLE_API_KEY not found in .env file"
+    exit 1
+fi
+echo "PASS: GOOGLE_API_KEY found in .env file"
+
+# Check docker-compose config
+echo ""
+echo "=== Docker Compose Configuration ==="
+if docker compose config 2>/dev/null | grep -q "GOOGLE_API_KEY"; then
+    echo "PASS: GOOGLE_API_KEY found in docker-compose config"
+    docker compose config | grep -A 2 "GOOGLE_API_KEY" | head -3
+else
+    echo "ERROR: GOOGLE_API_KEY not found in docker-compose config"
+    exit 1
+fi
+
+# Check if container is running
+if ! docker compose ps | grep -q "Up"; then
+    echo ""
+    echo "WARNING: Container is not running. Start it with: docker compose up -d"
+    exit 0
+fi
+
+echo ""
+echo "=== Container Environment Verification ==="
+
+# Check environment variable in container
+if docker compose exec -T comfyui env | grep -q "GOOGLE_API_KEY="; then
+    echo "PASS: GOOGLE_API_KEY is set in container environment"
+    # Show first few characters for verification (don't expose full key)
+    API_KEY_PREVIEW=$(docker compose exec -T comfyui env | grep "GOOGLE_API_KEY=" | cut -d'=' -f2 | cut -c1-10)
+    echo "   Preview: GOOGLE_API_KEY=${API_KEY_PREVIEW}..."
+else
+    echo "ERROR: GOOGLE_API_KEY not found in container environment"
+    exit 1
+fi
+
+# Verify Python can access it
+echo ""
+echo "=== Python Environment Access ==="
+if docker compose exec -T comfyui python -c "import os; key = os.environ.get('GOOGLE_API_KEY'); print('PASS: Python can access GOOGLE_API_KEY:', 'YES' if key else 'NO')" 2>/dev/null | grep -q "YES"; then
+    echo "PASS: Python can access GOOGLE_API_KEY via os.environ"
+else
+    echo "ERROR: Python cannot access GOOGLE_API_KEY"
+    exit 1
+fi
+
+echo ""
+echo "=== Verification Complete ==="
+echo "PASS: All checks passed! GOOGLE_API_KEY is properly configured."
+echo ""
+echo "To test Nano Banana authentication:"
+echo "  1. Ensure Nano Banana is installed in custom_nodes/"
+echo "  2. Access ComfyUI at http://localhost:8189"
+echo "  3. Check logs: docker compose logs comfyui | grep -i 'nano\|banana\|credentials'"
+