Validate restored Basque checklist check actions

Retain the distinct singular temporal checked and unchecked actions using actual generic trigger context, native software uncheck terminology and temporal grammar evidence. Named-item word order and browser review remain open.

Thanks to xet7.

releases/translations/audited-reviews.json

@@ -24988,5 +24988,17 @@
     "key": "r-is-moved",
     "value": "lekuz aldatzen denean",
     "reason": "Retained after checking the actual generic board movement trigger: Txartel bat lekuz aldatzen denean. EHU EEH leku entry section 16 attests lekuz aldatu and temporal lekuz aldatzen garenean; Euskadi native grammar section 13.1 explains -ENEAN and singular gelditzen denean. Singular card changes location is the complete generic temporal predicate; this row inserts no separate copula or destination noun. Other directional fragments and live browser review remain open."
+  },
+  {
+    "locale": "eu",
+    "key": "r-checked",
+    "value": "Markatzen denean",
+    "reason": "Retain the checklist-item temporal action. Actual generic checklist row combines Kontrol-zerrendako elementu bat with this singular predicate and no extra copula. Native EHU employment portal instructions explicitly use desmarkatu for unchecking a default check; Euskadi procurement FAQ independently uses desmarkatu for a software option. Euskadi grammar section 13.1 supports singular -tzen denean temporal clauses. The checked/unchecked opposition remains distinct; specific named-item word order and live browser validation remain open."
+  },
+  {
+    "locale": "eu",
+    "key": "r-unchecked",
+    "value": "Desmarkatzen denean",
+    "reason": "Retain the checklist-item temporal action. Actual generic checklist row combines Kontrol-zerrendako elementu bat with this singular predicate and no extra copula. Native EHU employment portal instructions explicitly use desmarkatu for unchecking a default check; Euskadi procurement FAQ independently uses desmarkatu for a software option. Euskadi grammar section 13.1 supports singular -tzen denean temporal clauses. The checked/unchecked opposition remains distinct; specific named-item word order and live browser validation remain open."
   }
 ]

tests/basqueRuleTriggerGrammar.test.cjs

@@ -76,3 +76,16 @@ assert.match(genericMove, /r-when-a-card[\s\S]*?r-is-moved/);
 assert.doesNotMatch(genericMove, /ruleTriggerCopula|r-a-card|r-moved-to|r-moved-from/);
 assert.equal([eu['r-when-a-card'], eu['r-is-moved']].join(' '), 'Txartel bat lekuz aldatzen denean');
 assert.doesNotMatch(eu['r-is-moved'], /\bes\b|\bis\b/, 'retain native temporal predicate rather than Spanish or English');
+
+const checklistTemplate = fs.readFileSync(path.join(root, 'client/components/rules/triggers/checklistTriggers.jade'), 'utf8');
+const itemTrigger = checklistTemplate.split("{{_'r-when-a-item'}}")[1].split('js-add-gen-check-item-trigger')[0];
+assert.match(itemTrigger, /option\(value="checked"\) \{\{_'r-checked'\}\}/);
+assert.match(itemTrigger, /option\(value="unchecked"\) \{\{_'r-unchecked'\}\}/);
+assert.doesNotMatch(itemTrigger, /ruleTriggerCopula/);
+assert.equal(eu['r-checked'], 'Markatzen denean');
+assert.equal(eu['r-unchecked'], 'Desmarkatzen denean');
+assert.notEqual(eu['r-checked'], eu['r-unchecked']);
+for (const key of ['r-checked', 'r-unchecked']) {
+  assert.match(eu[key], /tzen denean$/);
+  assert.doesNotMatch(eu[key], /Checked|Unchecked|marcado/, 'native action vocabulary preserved');
+}