updated updateSession and deleteSession routes to use external Ids, and added 'name' column to sessions table

packages/memory-service/src/index.js

@@ -64,12 +64,21 @@ app.get('/sessions/:id', (req, res) => {
   res.json(session);
 });
 
+app.patch('/sessions/by-external/:externalId', (req, res) => {
+  const { name } = req.body;
+  try {
+    const session = episodic.updateSessionByExternalId(req.params.externalId, {name });
+    res.json(session);
+  } catch (err) {
+    res.status(500).json({error: err.message });
+  }
+});
 
 
 
 // Updates the session's updated_at timestamp to now
-app.delete('/sessions/:id', (req, res) => {
-  episodic.deleteSession(req.params.id);
+app.delete('/sessions/by-external/:externalId', (req, res) => {
+  episodic.deleteSessionByExternalId(req.params.externalId);
   res.status(204).send();
 });