auto mail generation

config/config.go

@@ -74,6 +74,9 @@ type Config struct {
 	// Assistant is the model behind Nearle Buddy. Empty provider = no typed
 	// questions; the tools still work.
 	Assistant AssistantConfig
+	// Mail. Optional: a deployment without it still onboards tenants and reports
+	// the invitation as unsent.
+	Mail MailConfig
 
 	// POSTokenSecret signs terminal sessions. Falls back to JWTSecret when
 	// unset, matching utils/postoken.go.
@@ -357,6 +360,7 @@ func Load() (*Config, error) {
 		},
 
 		Assistant: AssistantFromEnv(),
+		Mail:      MailFromEnv(),
 
 		POSTokenSecret: env("POS_TOKEN_SECRET", ""),
 		JWTSecret:      env("JWT_SECRET_KEY", ""),