test: cover Kubernetes quickstart references

[Lovlace777]

Summary

• Adds a focused test that guards the Kubernetes quickstart's key file and directory references.
• The test verifies the quickstart still mentions the supporting Helm, example, and platform contract paths from the issue.
• The test also checks those referenced files and directories exist without requiring Kubernetes, Docker, Helm, kubectl, kind, network access, or new dependencies.

Validation

• Passed: D:\AI_practice\chores\.tools\go1.26.1\go\bin\go.exe test ./cmd/midas
• Passed: D:\AI_practice\chores\.tools\go1.26.1\go\bin\go.exe test ./...
• Passed: git diff --check

Notes

• Resolves Add tests for Kubernetes quickstart documentation links and file references #74.
• No runtime behavior or public API changes.
• Full ./test.sh was not run because Docker Desktop's Linux engine is not running locally; the raw Go suite passed without requiring Kubernetes or Docker.

[MuttleyD]

Approved. Thank you for the contribution, and especially for being the first external contributor to MIDAS.

This is a focused documentation-reference regression test for the Kubernetes quickstart. The change is limited to a single added Go test file, uses only the standard library, does not alter runtime behaviour or public APIs, and does not introduce Docker, Kubernetes, Helm, kubectl, kind, network, or dependency requirements.

GitHub CI has passed, and the test appropriately verifies that the quickstart references the expected Helm, example, and platform contract paths and that those paths exist in the repository.