feat(ansible): add CASE Field Systems MCP endpoint configuration

Configure FastAgent MCP server to connect to the CASE Field Systems
service over HTTP. Enables integration with LAN, SD Card, and
Provisioning workflows without authentication.

Uses dynamic Ansible variables for host and port to support
environment-specific deployments.

ansible/kottos/fastagent.config.yaml.j2

@@ -46,6 +46,12 @@ mcp:
       transport: http
       url: "{{ kottos_argus_mcp_url }}"
 
+    ## CASE Field Systems — LAN, SD Card, Provisioning
+    ### No Auth
+    case:
+      transport: http
+      url: "http://{{ kottos_case_host }}:{{ kottos_case_port }}"
+
     ## Context7 Library/framework documentation (local stdio)
     context7:
       command: "npx"