fix(ql3): preserve legacy running instances

packages/ql3-local-owner-cli/test/reconciliationInventory.test.cjs

@@ -0,0 +1,17 @@
+const assert = require('node:assert/strict');
+const { test } = require('node:test');
+
+const {
+  classifyLocalReconciliationFact,
+} = require('../dist/deployment/reconciliation/planning/inventory.js');
+
+test('classifies Legacy runtime instances as preserved run history', () => {
+  assert.equal(
+    classifyLocalReconciliationFact('legacy', 'RunningInstances'),
+    'run_history',
+  );
+  assert.equal(
+    classifyLocalReconciliationFact('legacy', 'PluginOwnedState'),
+    'unknown',
+  );
+});