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/demo_session/app/jobs/cleanup_worker.py

@@ -244,15 +244,17 @@ async def run_cleanup_worker():
     # Initialize Redis client
     import os
     from shared.redis_utils import initialize_redis
+    from app.core.config import Settings
 
-    redis_url = os.getenv("REDIS_URL", "redis://redis-service:6379/0")
+    settings = Settings()
+    redis_url = settings.REDIS_URL  # Use proper configuration with TLS and auth
 
     try:
         # Initialize Redis with connection pool settings
-        await initialize_redis(redis_url, db=0, max_connections=10)
-        logger.info("Redis initialized successfully", redis_url=redis_url.split('@')[-1])
+        await initialize_redis(redis_url, db=settings.REDIS_DB, max_connections=settings.REDIS_MAX_CONNECTIONS)
+        logger.info("Redis initialized successfully", redis_url=redis_url.split('@')[-1], db=settings.REDIS_DB)
     except Exception as e:
-        logger.error("Failed to initialize Redis", error=str(e))
+        logger.error("Failed to initialize Redis", error=str(e), redis_url=redis_url.split('@')[-1])
         raise
 
     redis = DemoRedisWrapper()