error response consistency, human readible1

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

@@ -15,7 +15,7 @@ router.get('/:sessionId/history', async (req, res) => {
     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 });
+    res.status(500).json({ error: 'Failed to fetch session history', detail: err.message });
   }
 });
 
@@ -26,7 +26,7 @@ router.get('/', async (req, res) => {
     const sessions = await memory.getSessions(Number(limit), Number(offset), parsedProjectId);
     res.json(sessions);
   } catch (err) {
-    res.status(500).json({ error: err.message });
+    res.status(500).json({ error: 'Failed to fetch sessions', detail: err.message });
   }
 });
 
@@ -45,7 +45,7 @@ router.patch('/:sessionId', async (req, res) => {
     });
     res.json(session);
   } catch (err) {
-    res.status(500).json({ error: err.message });
+    res.status(500).json({ error: 'Failed to update session', detail: err.message });
   }
 });
 
@@ -54,7 +54,7 @@ router.delete('/:sessionId', async (req, res) => {
         await memory.deleteSession(req.params.sessionId);
         res.status(204).send();
     } catch (err) {
-        res.status(500).json({ error: err.message });
+        res.status(500).json({ error: 'Failed to delete session', detail: err.message });
     }
 });