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/validators/collectionValidators.js

@@ -17,7 +17,7 @@ function validateArray(configValue, rules, fieldSchema, name, key, logger) {
             }
         })
         .slice(0, rules.maxLength || Infinity);
-    if (validatedArray.length < (rules.minLength || 1)) {
+    if (validatedArray.length < (rules.minLength ?? 1)) {
         logger.warn(
             `${name}.${key} contains fewer items than allowed (${rules.minLength}). Using default value.`
         );
@@ -41,7 +41,7 @@ function validateSet(configValue, rules, fieldSchema, name, key, logger) {
             }
         })
         .slice(0, rules.maxLength || Infinity);
-    if (validatedArray.length < (rules.minLength || 1)) {
+    if (validatedArray.length < (rules.minLength ?? 1)) {
         logger.warn(
             `${name}.${key} contains fewer items than allowed (${rules.minLength}). Using default value.`
         );