Fix critical bugs and standardize service integrations

Critical Fixes:
- Orchestrator: Add missing OrchestrationStatus import (fixes HTTP 500 during demo clone)
- Procurement: Migrate from custom cache utils to shared Redis utils
- Suppliers: Use proper Settings for Redis configuration with TLS/auth
- Recipes/Suppliers clients: Fix endpoint paths (remove duplicate path segments)
- Procurement client: Use suppliers service directly for supplier details

Details:
1. services/orchestrator/app/api/internal_demo.py:
   - Added OrchestrationStatus import to fix cloning error
   - This was causing HTTP 500 errors during demo session cloning

2. services/procurement/app/api/purchase_orders.py + service:
   - Replaced app.utils.cache with shared.redis_utils
   - Standardizes caching across all services
   - Removed custom cache utilities (deleted app/utils/cache.py)

3. services/suppliers/app/consumers/alert_event_consumer.py:
   - Use Settings().REDIS_URL instead of os.getenv
   - Ensures proper Redis connection with TLS and authentication

4. shared/clients/recipes_client.py:
   - Fixed endpoint paths: recipes/recipes/{id} → recipes/{id}
   - Applied to all recipe methods (by_id, by_products, instructions, yield)

5. shared/clients/suppliers_client.py:
   - Fixed endpoint path: suppliers/suppliers/{id} → suppliers/{id}

6. shared/clients/procurement_client.py:
   - get_supplier_by_id now uses SuppliersServiceClient directly
   - Removes incorrect call to procurement service for supplier details

Impact:
- Demo session cloning now works without orchestrator errors ✅
- Consistent Redis usage across all services
- Correct service boundaries (suppliers data from suppliers service)
- Clean client endpoint paths

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

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

shared/clients/suppliers_client.py

@@ -28,7 +28,7 @@ class SuppliersServiceClient(BaseServiceClient):
     async def get_supplier_by_id(self, tenant_id: str, supplier_id: str) -> Optional[Dict[str, Any]]:
         """Get supplier details by ID"""
         try:
-            result = await self.get(f"suppliers/suppliers/{supplier_id}", tenant_id=tenant_id)
+            result = await self.get(f"suppliers/{supplier_id}", tenant_id=tenant_id)
             if result:
                 logger.info("Retrieved supplier details from suppliers service", 
                           supplier_id=supplier_id, tenant_id=tenant_id)