fix(server): load development settings by default

go/cmd/bd2server/development_settings.go

@@ -0,0 +1,10 @@
+package main
+
+import "path/filepath"
+
+func resolveDevelopmentSettingsPath(dataDir, override string) string {
+	if override != "" {
+		return filepath.Clean(override)
+	}
+	return filepath.Join(dataDir, "dev-tools.json")
+}