feat: Implement session processing and refresh schedulers

- Added processingScheduler.js and processingScheduler.ts to handle session transcript processing using OpenAI API.
- Implemented a new scheduler (scheduler.js and schedulers.ts) for refreshing sessions every 15 minutes.
- Updated Prisma migrations to add new fields for processed sessions, including questions, sentimentCategory, and summary.
- Created scripts (process_sessions.mjs and process_sessions.ts) for manual processing of unprocessed sessions.
- Enhanced server.js and server.mjs to initialize schedulers on server start.

server.mjs

@@ -0,0 +1,56 @@
+// Custom Next.js server with scheduler initialization
+import { createServer } from 'http';
+import { parse } from 'url';
+import next from 'next';
+
+// We'll need to dynamically import these after they're compiled
+let startScheduler;
+let startProcessingScheduler;
+
+const dev = process.env.NODE_ENV !== 'production';
+const hostname = 'localhost';
+const port = parseInt(process.env.PORT || '3000', 10);
+
+// Initialize Next.js
+const app = next({ dev, hostname, port });
+const handle = app.getRequestHandler();
+
+async function init() {
+  try {
+    // Dynamically import the schedulers
+    const scheduler = await import('./lib/scheduler.js');
+    const processingScheduler = await import('./lib/processingScheduler.js');
+    
+    startScheduler = scheduler.startScheduler;
+    startProcessingScheduler = processingScheduler.startProcessingScheduler;
+    
+    app.prepare().then(() => {
+      // Initialize schedulers when the server starts
+      console.log('Starting schedulers...');
+      startScheduler();
+      startProcessingScheduler();
+      console.log('All schedulers initialized successfully');
+      
+      createServer(async (req, res) => {
+        try {
+          // Parse the URL
+          const parsedUrl = parse(req.url || '', true);
+          
+          // Let Next.js handle the request
+          await handle(req, res, parsedUrl);
+        } catch (err) {
+          console.error('Error occurred handling', req.url, err);
+          res.statusCode = 500;
+          res.end('Internal Server Error');
+        }
+      }).listen(port, () => {
+        console.log(`> Ready on http://${hostname}:${port}`);
+      });
+    });
+  } catch (error) {
+    console.error('Failed to initialize server:', error);
+    process.exit(1);
+  }
+}
+
+init();