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/procurement_client.py

@@ -538,10 +538,10 @@ class ProcurementServiceClient(BaseServiceClient):
             Supplier details
         """
         try:
-            response = await self.get(
-                f"procurement/suppliers/{supplier_id}",
-                tenant_id=tenant_id
-            )
+            # Use suppliers service to get supplier details
+            from shared.clients.suppliers_client import SuppliersServiceClient
+            suppliers_client = SuppliersServiceClient(self.config)
+            response = await suppliers_client.get_supplier_by_id(tenant_id, supplier_id)
             
             if response:
                 logger.info("Retrieved supplier details",