fix: preserve replies after session recovery

conversation-repair.mjs

@@ -4,6 +4,7 @@
  */
 
 import { extractConversationMessageText } from './conversation-memory.mjs';
+import { mergeConversationSnapshot } from './chat-finish-sync.mjs';
 
 export function parseStoredConversationRow(row) {
   if (!row) return null;
@@ -215,6 +216,15 @@ export function repairConversationFromDbRows(gooseMessages, dbRows) {
     return Array.isArray(gooseMessages) ? gooseMessages : [];
   }
   if (dbBuilt.length === 0) return Array.isArray(gooseMessages) ? gooseMessages : [];
+  const goose = Array.isArray(gooseMessages) ? gooseMessages : [];
+  const dbIds = new Set(dbBuilt.map((message) => message?.id).filter(Boolean));
+  const hasSharedAnchor = goose.some((message) => message?.id && dbIds.has(message.id));
+  if (hasSharedAnchor) {
+    // A recovered Goose session can contain only the last DB-backed user turn
+    // plus replies created after rotation. Prefer DB content for shared history,
+    // while retaining every Goose-only reply and follow-up around that anchor.
+    return mergeConversationSnapshot(goose, dbBuilt);
+  }
   return dbBuilt;
 }