fix from review

Author: zaro0508

app.py

@@ -9,7 +9,7 @@
 
 
 cdk_app = cdk.App()
-env_name = cdk_app.node.try_get_context("env")
+env_name = cdk_app.node.try_get_context("env") or "dev"
 config = load_context_config(env_name=env_name)
 stack_name_prefix = f"app-{env_name}"
 fully_qualified_domain_name = config["FQDN"]

src/utils.py

@@ -45,8 +45,7 @@ def read_file(path: Path) -> Dict[str, Any]:
     # Load base config (optional)
     base_config = {}
     if base_path.exists():
-        with open(base_path, "r") as f:
-            base_config = yaml.safe_load(f) or {}
+        base_config = read_file(base_path)
 
     # Detect existing env-specific file(s)
     env_files = [p for p in [env_yaml, env_yml, env_json] if p.exists()]