feat: Implement configurable scheduler settings and enhance CSV import functionality

.env.local.example

@@ -0,0 +1,22 @@
+# Copy this file to .env.local and configure as needed
+
+# NextAuth.js configuration
+NEXTAUTH_URL=http://localhost:3000
+NEXTAUTH_SECRET=your_secret_key_here
+NODE_ENV=development
+
+# OpenAI API key for session processing
+OPENAI_API_KEY=your_openai_api_key_here
+
+# Scheduler Configuration
+SCHEDULER_ENABLED=true                     # Set to false to disable all schedulers during development
+CSV_IMPORT_INTERVAL=*/15 * * * *           # Every 15 minutes (cron format)
+SESSION_PROCESSING_INTERVAL=0 * * * *      # Every hour (cron format)
+SESSION_PROCESSING_BATCH_SIZE=0            # 0 = process all sessions, >0 = limit number
+SESSION_PROCESSING_CONCURRENCY=5           # Number of sessions to process in parallel
+
+# Example configurations:
+# - For development (no schedulers): SCHEDULER_ENABLED=false
+# - For testing (every 5 minutes): CSV_IMPORT_INTERVAL=*/5 * * * *
+# - For limited processing: SESSION_PROCESSING_BATCH_SIZE=10
+# - For high concurrency: SESSION_PROCESSING_CONCURRENCY=10