fix(story-summary): restore getStorySummaryForEna export for ena planner

modules/story-summary/story-summary.js

@@ -116,6 +116,7 @@ let events = null;
 let activeChatId = null;
 let vectorCancelled = false;
 let vectorAbortController = null;
+let _lastBuiltPromptText = "";
 
 // ═══════════════════════════════════════════════════════════════════════════
 // TaskGuard — 互斥任务管理（summary / vector / anchor）
@@ -1028,6 +1029,12 @@ function buildFramePayload(store) {
     };
 }
 
+// Compatibility export for ena-planner.
+// Returns a compact plain-text snapshot of story-summary memory.
+export function getStorySummaryForEna() {
+    return _lastBuiltPromptText;
+}
+
 function parseRelationTargetFromPredicate(predicate) {
     const text = String(predicate || "").trim();
     if (!text.startsWith("对")) return null;
@@ -1811,6 +1818,7 @@ async function handleGenerationStarted(type, _params, isDryRun) {
     } else {
         text = buildNonVectorPromptText() || "";
     }
+    _lastBuiltPromptText = text;
     if (!text.trim()) return;
 
     // 获取用户配置的 role