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.

lib/types.ts

@@ -45,6 +45,7 @@ export interface ChatSession {
   country?: string | null;
   ipAddress?: string | null;
   sentiment?: number | null;
+  sentimentCategory?: string | null; // "positive", "neutral", "negative" from OpenAPI
   messagesSent?: number;
   startTime: Date;
   endTime?: Date | null;
@@ -60,6 +61,9 @@ export interface ChatSession {
   initialMsg?: string;
   fullTranscriptUrl?: string | null;
   transcriptContent?: string | null;
+  processed?: boolean | null; // Flag for post-processing status
+  questions?: string | null; // JSON array of questions asked by user
+  summary?: string | null; // Brief summary of the conversation
 }
 
 export interface SessionQuery {