refactor: make production gate impact only

release-gate/report.mjs

@@ -137,9 +137,18 @@ function validateImpactSelection(report, scenarioIds, errors) {
     return;
   }
 
-  if (selection.policy_version !== 1) errors.push('impact policy_version must be 1');
-  if (!['core', 'impact', 'full'].includes(selection.strategy)) {
-    errors.push('impact strategy must be core, impact, or full');
+  if (![1, 2].includes(selection.policy_version)) {
+    errors.push('impact policy_version must be 1 or 2');
+  }
+  const allowedStrategies = selection.policy_version === 2
+    ? ['core', 'impact']
+    : ['core', 'impact', 'full'];
+  if (!allowedStrategies.includes(selection.strategy)) {
+    errors.push(
+      selection.policy_version === 2
+        ? 'impact strategy must be core or impact'
+        : 'impact strategy must be core, impact, or full',
+    );
   }
   if (!/^[0-9a-f]{40}$/i.test(selection.base_commit ?? '')) {
     errors.push('impact base_commit must be a full SHA');
@@ -177,8 +186,12 @@ function validateImpactSelection(report, scenarioIds, errors) {
   if (selection.strategy === 'impact' && selection.impact_groups?.length === 0) {
     errors.push('impact report must contain at least one impact group');
   }
-  if (selection.strategy !== 'full' && selection.unmapped_paths?.length > 0) {
-    errors.push('unmapped runtime paths require a full Gate');
+  if (selection.unmapped_paths?.length > 0) {
+    errors.push(
+      selection.policy_version === 2
+        ? 'unmapped runtime paths block the impact Gate'
+        : 'unmapped runtime paths require a full Gate',
+    );
   }
   if (selection.strategy === 'full') {
     if (!sameValues(scenarioIds, expectedScenarioIds())) {