added chat history orchestration endpoint

packages/orchestration-service/src/routes/chat.js

@@ -21,4 +21,19 @@ router.post('/', async (req, res) => {
     }
 });
 
+router.get('/sessions/:sessionId/history', async (req, res) => {
+  const { sessionId } = req.params;
+  const { limit = 20, offset = 0 } = req.query;
+
+  try {
+    const session = await memory.getSessionByExternalId(sessionId);
+    if (!session) return res.status(404).json({ error: 'Session not found' });
+
+    const history = await memory.getSessionHistory(session.id, Number(limit), Number(offset));
+    res.json({ sessionId, episodes: history });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
 module.exports = router;