rename arch provider to plano, use llm_routing_model and agent_orchestration_model

config/envoy.template.yaml

@@ -594,13 +594,13 @@ static_resources:
 
   clusters:
 
-    - name: arch
+    - name: plano
       connect_timeout: {{ upstream_connect_timeout | default('5s') }}
       type: LOGICAL_DNS
       dns_lookup_family: V4_ONLY
       lb_policy: ROUND_ROBIN
       load_assignment:
-        cluster_name: arch
+        cluster_name: plano
         endpoints:
           - lb_endpoints:
               - endpoint:

config/plano_config_schema.yaml

@@ -173,7 +173,6 @@ properties:
         provider_interface:
           type: string
           enum:
-            - arch
             - plano
             - claude
             - deepseek
@@ -221,7 +220,6 @@ properties:
         provider_interface:
           type: string
           enum:
-            - arch
             - plano
             - claude
             - deepseek
@@ -273,10 +271,10 @@ properties:
       upstream_tls_ca_path:
         type: string
         description: "Path to the trusted CA bundle for upstream TLS verification. Default is '/etc/ssl/certs/ca-certificates.crt'."
-      router_model:
+      llm_routing_model:
         type: string
         description: "Model name for the LLM router (e.g., 'Arch-Router'). Must match a model in model_providers."
-      orchestrator_model:
+      agent_orchestration_model:
         type: string
         description: "Model name for the agent orchestrator (e.g., 'Plano-Orchestrator'). Must match a model in model_providers."
   system_prompt: