Add comprehensive documentation and final improvements

Documentation Added:
- AI_INSIGHTS_DEMO_SETUP_GUIDE.md: Complete setup guide for demo sessions
- AI_INSIGHTS_DATA_FLOW.md: Architecture and data flow diagrams
- AI_INSIGHTS_QUICK_START.md: Quick reference guide
- DEMO_SESSION_ANALYSIS_REPORT.md: Detailed analysis of demo session d67eaae4
- ROOT_CAUSE_ANALYSIS_AND_FIXES.md: Complete analysis of 8 issues (6 fixed, 2 analyzed)
- COMPLETE_FIX_SUMMARY.md: Executive summary of all fixes
- FIX_MISSING_INSIGHTS.md: Forecasting and procurement fix guide
- FINAL_STATUS_SUMMARY.md: Status overview
- verify_fixes.sh: Automated verification script
- enhance_procurement_data.py: Procurement data enhancement script

Service Improvements:
- Demo session cleanup worker: Use proper settings for Redis configuration with TLS/auth
- Procurement service: Add Redis initialization with proper error handling and cleanup
- Production fixture: Remove duplicate worker assignments (cleaned 56 duplicates)
- Orchestrator fixture: Add purchase order metadata for better tracking

Impact:
- Complete documentation for troubleshooting and setup
- Improved Redis connection handling across services
- Clean production data without duplicates
- Better error handling and logging

🤖 Generated with Claude Code (https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

services/procurement/app/main.py

@@ -105,9 +105,23 @@ class ProcurementService(StandardFastAPIService):
         await self.delivery_tracking_service.start()
         self.logger.info("Delivery tracking service started")
 
+        # Initialize Redis for caching (optional - service can run without Redis)
+        from shared.redis_utils import initialize_redis, get_redis_client
+        try:
+            redis_url = settings.REDIS_URL  # Use configured Redis URL with TLS and auth
+            await initialize_redis(redis_url, db=settings.REDIS_DB, max_connections=settings.REDIS_MAX_CONNECTIONS)
+            redis_client = await get_redis_client()
+            self.logger.info("Redis initialized successfully for procurement service", 
+                           redis_url=redis_url.split("@")[-1], db=settings.REDIS_DB)
+        except Exception as e:
+            self.logger.warning("Failed to initialize Redis for caching, service will continue without caching", 
+                              error=str(e), redis_url=redis_url.split("@")[-1] if 'redis_url' in locals() else "unknown")
+            redis_client = None
+
         # Store in app state for internal API access
         app.state.delivery_tracking_service = self.delivery_tracking_service
         app.state.event_publisher = self.event_publisher
+        app.state.redis_client = redis_client
 
         # Start overdue PO scheduler
         if self.rabbitmq_client and self.rabbitmq_client.connected:
@@ -124,6 +138,14 @@ class ProcurementService(StandardFastAPIService):
         """Custom shutdown logic for procurement service"""
         self.logger.info("Procurement Service shutting down...")
 
+        # Close Redis connections (if initialized)
+        try:
+            from shared.redis_utils import close_redis
+            await close_redis()
+            self.logger.info("Redis connections closed")
+        except Exception as e:
+            self.logger.debug("Redis cleanup failed or Redis was not initialized", error=str(e))
+
         # Stop delivery tracking service
         if self.delivery_tracking_service:
             await self.delivery_tracking_service.stop()