added the state_storage_v1_responses flag, and use that to store state appropriately

docs/source/resources/includes/arch_config_state_storage_example.yaml

@@ -0,0 +1,32 @@
+version: v0.1
+
+listeners:
+  egress_traffic:
+    address: 0.0.0.0
+    port: 12000
+    message_format: openai
+    timeout: 30s
+
+llm_providers:
+
+  # OpenAI Models
+  - model: openai/gpt-5-mini-2025-08-07
+    access_key: $OPENAI_API_KEY
+    default: true
+
+    # Anthropic Models
+  - model: anthropic/claude-sonnet-4-20250514
+    access_key: $ANTHROPIC_API_KEY
+
+# State storage configuration for v1/responses API
+# Manages conversation state for multi-turn conversations
+state_storage:
+  # Type: memory | postgres
+  type: postgres
+
+  # Connection string for postgres type
+  # Environment variables are supported using $VAR_NAME or ${VAR_NAME} syntax
+  # Replace [USER] and [HOST] with your actual database credentials
+  # Variables like $DB_PASSWORD MUST be set before running config validation/rendering
+  # Example: Replace [USER] with 'myuser' and [HOST] with 'db.example.com:5432'
+  connection_string: "postgresql://[USER]:$DB_PASSWORD@[HOST]:5432/postgres"