fix: clarify memory selection semantics

harness/.pi/extensions/gate/builders.js

@@ -61,6 +61,7 @@ function buildSelectRequest({
 // `allowEmpty:false` with zero options is a broken widget and throws.
 function buildMultiselectRequest({
   id, phase, title, options, content = null, selected = [], allowEmpty = false,
+  selectionLabel, confirmLabel,
 }) {
   requireString(title, "title", "multiselect");
   const opts = requireArray(options, "options", "multiselect");
@@ -77,10 +78,12 @@ function buildMultiselectRequest({
     widget: "multiselect",
     title,
     allow_empty: allowEmpty,
-    options: [...opts],
+    options: opts.map((option) => ({ ...option, selected: selected.includes(option.id) })),
     selected: [...selected],
     content,
     reserved: RESERVED,
+    ...(selectionLabel ? { selection_label: selectionLabel } : {}),
+    ...(confirmLabel ? { confirm_label: confirmLabel } : {}),
   };
 }