Merged in feature/aws-config-fix3 (pull request #184)

Make AWS variables optional

* comment

* aws vars optional

internal/serviceconfig/aws/config.go

@@ -11,8 +11,8 @@ import (
 type Profile string
 
 type AWSConfig struct {
-	AWSKeyID         string  `env:"AWS_ACCESS_KEY_ID,required,notEmpty"`
-	AWSSecretKey     string  `env:"AWS_SECRET_ACCESS_KEY,required,notEmpty"`
+	AWSKeyID         string  `env:"AWS_ACCESS_KEY_ID"`
+	AWSSecretKey     string  `env:"AWS_SECRET_ACCESS_KEY"`
 	AWSRegion        string  `env:"AWS_REGION,required,notEmpty"`
 	AWSDefaultRegion string  `env:"AWS_DEFAULT_REGION"`
 	AWSSessionToken  string  `env:"AWS_SESSION_TOKEN"`

internal/serviceconfig/common.go

@@ -164,6 +164,13 @@ func initializeConfigPrivate(cfg ConfigProvider) error {
 	// Reinitialize with environment level
 	cfg.SetDefaultLogger()
 
+	// Log AWS credential method being used
+	if cfg.GetAWSKeyID() != "" {
+		slog.Info("Using explicit AWS credentials from environment variables")
+	} else {
+		slog.Info("Using AWS credential chain (IAM role, instance profile, etc.)")
+	}
+
 	return initErr
 }