feat: add MCP tools, refined recipe steps for schema extension verification and update Docker requirements

- Add mcp/operations/importHosts.graphql for flexible, name-based host provisioning.
- Split schema verification operations into createVerificationHost.graphql and verifySchemaExtension.graphql to support Apollo MCP server requirements.
- Improve mcp/operations/createHost.graphql with better type mapping and error message retrieval.
- Fix syntax error in importHosts.graphql by replacing unsupported triple-quote docstrings with standard comments.
- Add src/test/mcp_operations_validation.test.ts to automatically validate MCP operations against the GraphQL schema.
- Update docs/howtos/cookbook.md with 🤖 AI/MCP guidance and refined recipe steps for schema extension verification.
- Update README.md, docs/howtos/mcp.md, and .junie/guidelines.md to:
  - Add Docker (v27+) and Docker Compose (v2.29+) version requirements to the Tech Stack.
  - Enforce the use of docker compose (without hyphen) for all commands in the Environment guidelines.
  - Replace legacy docker-compose references across all documentation with the new command format.

mcp/operations/createHost.graphql

@@ -1,6 +1,8 @@
-mutation CreateHost($host: String!, $hostgroupids: [Int!]!, $templateids: [Int!]) {
+mutation CreateHost($host: String!, $hostgroupids: [Int!]!, $templateids: [Int!]!) {
   createHost(host: $host, hostgroupids: $hostgroupids, templateids: $templateids) {
     hostids
-    error
+    error {
+      message
+    }
   }
 }