P10.5: fix 4 pre-existing test failures (output + validation)

outputUtils.formatMsg: fall back to \`<softwareType>_<id>\` when
config.general.name is unset — restores the convention the original
test expected; safer for nodes whose name isn't required at registration.

collectionValidators.validateArray + validateSet: replace \`|| 1\` with
\`?? 1\` so explicit minLength: 0 lets through empty arrays. Was
swallowing the 0 as falsy and clamping minimum to 1.

validationUtils: add public validateCurve wrapper around the helper so
callers can validate raw curves without going through validateSchema.

Test suite: 170 total / 170 pass (was 4 fail).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/helper/validationUtils.js

@@ -233,6 +233,13 @@ class ValidationUtils {
                 return fieldSchema.default;
             }
     }
+
+    // Public wrapper for the curve validator — exposes the helper so
+    // callers (and tests) can validate a raw curve without going
+    // through validateSchema.
+    validateCurve(input, defaultCurve) {
+        return validateCurve(input, defaultCurve, this.logger);
+    }
 }
 
 module.exports = ValidationUtils;