🐛 fix: use correct DLC_DATABASE_HOST for Docker vs native execution

- Use localhost for native execution (PostgreSQL port mapping)
- Use dance-lessons-coach-postgres for Docker container execution
- Set appropriate environment variables for each execution mode
- Fix container-to-container communication

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

scripts/test-local-ci-cd.sh

@@ -69,9 +69,7 @@ for i in {1..30}; do
 done
 
 # Set PostgreSQL environment variables for BDD tests
-# Use localhost since PostgreSQL port is mapped to host
-# Container name is only used when running INSIDE Docker containers
-export DLC_DATABASE_HOST="localhost"
+export DLC_DATABASE_HOST="localhost"  # PostgreSQL port is mapped to host
 export DLC_DATABASE_PORT=5432
 export DLC_DATABASE_USER=postgres
 export DLC_DATABASE_PASSWORD=postgres
@@ -132,7 +130,7 @@ if [ "$USE_DOCKER_CACHE" = true ]; then
       --network dance-lessons-coach-network \
       -v "$(pwd):/workspace" \
       -w /workspace \
-      -e DLC_DATABASE_HOST=localhost \
+      -e DLC_DATABASE_HOST=dance-lessons-coach-postgres \
       -e DLC_DATABASE_PORT=5432 \
       -e DLC_DATABASE_USER=postgres \
       -e DLC_DATABASE_PASSWORD=postgres \