refactoring and clean up

packages/memory-service/src/index.js

@@ -1,7 +1,8 @@
 require ('dotenv').config();
 const express = require('express');
-const {getEnv} = require('@nexusai/shared');
+const {getEnv, PORTS, EPISODIC} = require('@nexusai/shared');
 const { getDB } = require('./db');
+
 const episodic = require('./episodic');
 const semantic = require('./semantic');
 const entities = require('./entities');
@@ -9,7 +10,7 @@ const entities = require('./entities');
 const app = express();
 app.use(express.json());
 
-const  PORT = getEnv('PORT', '3002');  // Default to 3002 if PORT is not set
+const  PORT = getEnv('PORT', PORTS.MEMORY);
 
 //initialize database on startup
 const db = getDB();
@@ -42,7 +43,7 @@ app.post('/sessions', (req, res) => {
 });
 
 app.get('/sessions', (req, res) => {
-  const {limit = 20, offset = 0 } = req.query;
+  const {limit = EPISODIC.DEFAULT_PAGE_SIZE, offset = EPISODIC.DEFAULT_OFFSET } = req.query;
   const sessions = episodic.getSessions(Number(limit), Number(offset));
   res.json(sessions);
 })
@@ -88,7 +89,7 @@ app.post('/episodes', async (req, res) => {
 
 // Search MUST come before /:id — otherwise 'search' gets captured as an id
 app.get('/episodes/search', (req, res) => {
-  const { q, limit = 10 } = req.query;
+  const { q, limit = EPISODIC.DEFAULT_PAGE_SIZE } = req.query;
   if (!q) return res.status(400).json({ error: 'q (query) parameter is required' });
   const results = episodic.searchEpisodes(q, Number(limit));
   res.json(results);
@@ -102,7 +103,7 @@ app.get('/episodes/:id', (req, res) => {
 
 // Get paginated episodes for a session
 app.get('/sessions/:id/episodes', (req, res) => {
-  const { limit = 10, offset = 0 } = req.query;
+  const { limit = EPISODIC.DEFAULT_PAGE_SIZE, offset = EPISODIC.DEFAULT_OFFSET } = req.query;
   const episodes = episodic.getEpisodesBySession(
     req.params.id,
     Number(limit),