Expose Novelly API port + service-key auth for MCP access to QA deploy

MCP server is a stdio process run outside docker, pointed at the API
over HTTP via NOVELLY_API_URL. The api container previously had no
port mapping, so it was unreachable outside the compose network.

scripts/ci/deploy.sh

@@ -13,6 +13,8 @@ registry_login
 export API_IMAGE WEB_IMAGE
 export ANTHROPIC_API_KEY="${ANTHROPIC_API_KEY:-}"
 export WEB_PORT="${WEB_PORT:-6173}"
+export API_PORT="${API_PORT:-5080}"
+export MCP_API_KEY="${MCP_API_KEY:-}"
 
 COMPOSE="docker compose -f deploy/qa/docker-compose.qa.yml"