feat: add episodic history recall

session-snapshot.mjs

@@ -97,6 +97,7 @@ async function syncConversationMemory({
 export function createSessionSnapshotService(pool, options = {}) {
   const conversationMemoryService = options.conversationMemoryService ?? null;
   const memoryV2 = options.memoryV2 ?? null;
+  const episodicMemoryService = options.episodicMemoryService ?? null;
   const logger = options.logger ?? console;
 
   function isEnabled() {
@@ -189,6 +190,22 @@ export function createSessionSnapshotService(pool, options = {}) {
           );
         });
       }
+      if (episodicMemoryService?.upsertSnapshot) {
+        void episodicMemoryService.upsertSnapshot({
+          sessionId,
+          userId,
+          session: {
+            ...session,
+            display_title: sessionMeta.display_title,
+          },
+          messages,
+        }).catch((err) => {
+          logger?.warn?.(
+            '[snapshot] episodic memory index failed:',
+            err instanceof Error ? err.message : err,
+          );
+        });
+      }
     } catch (err) {
       // Non-fatal: log and continue; caller falls back to Goose.
       console.warn('[snapshot] save failed:', err instanceof Error ? err.message : err);
@@ -260,6 +277,14 @@ export function createSessionSnapshotService(pool, options = {}) {
   async function remove(sessionId) {
     if (!pool) return;
     try {
+      if (episodicMemoryService?.remove) {
+        await episodicMemoryService.remove(sessionId).catch((err) => {
+          logger?.warn?.(
+            '[snapshot] episodic memory delete failed:',
+            err instanceof Error ? err.message : err,
+          );
+        });
+      }
       await pool.query(
         `DELETE FROM h5_session_snapshots WHERE agent_session_id = ?`,
         [sessionId],