feat: implement smoketest and extend host provisioning with template linking

- Add runSmoketest mutation to automate end-to-end verification.

- Add SmoketestExecutor and HostDeleter to support automated testing and cleanup.

- Extend createHost and importHosts to allow linking templates by name or ID.

- Update docs/howtos/cookbook.md with new recipe steps and AI/MCP guidance.

- Update .junie/guidelines.md with new verification and deployment standards.

- Add src/test/template_link.test.ts and update existing tests to cover new functionality.

- Regenerate GraphQL types to match schema updates.

mcp/operations/createHost.graphql

@@ -1,5 +1,5 @@
-mutation CreateHost($host: String!, $hostgroupids: [Int!]!, $templateids: [Int!]!) {
-  createHost(host: $host, hostgroupids: $hostgroupids, templateids: $templateids) {
+mutation CreateHost($host: String!, $hostgroupids: [Int!]!, $templateids: [Int], $templateNames: [String]) {
+  createHost(host: $host, hostgroupids: $hostgroupids, templateids: $templateids, templateNames: $templateNames) {
     hostids
     error {
       message