fix: remediate 17 VlamGuard policy failures

[github-actions]

Summary

This production deployment has critical security gaps (missing securityContext, root execution, privilege escalation risks) and high-availability risks (single replica, no probes). The NodePort service exposes the app externally without proper safeguards, and the container lacks resource limits, increasing the risk of resource exhaustion attacks. Addressing these will harden the deployment against exploits and improve reliability.

Key fixes needed: Enforce least-privilege securityContext, replace NodePort with ClusterIP + Ingress, add probes/limits, and disable service account token mounting.

VlamGuard Report

	Risk Score	Risk Level	Grade	Hard Blocks
Before	100/100	critical	D	4
After	100/100	critical	D	4

Fixes Applied

Check ID	File	Description
security_context	demo/charts/best-practices-fail/values.yaml	Applied static remediation: securityContext
resource_limits	demo/charts/best-practices-fail/values.yaml	Applied static remediation: limits
replica_count	demo/charts/best-practices-fail/values.yaml	Applied static remediation: replicaCount
readonly_root_fs	demo/charts/best-practices-fail/values.yaml	Applied static remediation: readOnlyRootFilesystem
service_account_token	demo/charts/best-practices-fail/values.yaml	Applied static remediation: automountServiceAccountToken
allow_privilege_escalation	demo/charts/best-practices-fail/values.yaml	Applied static remediation: allowPrivilegeEscalation
service_account_token	demo/charts/best-practices-fail/values.yaml	Applied static remediation: automountServiceAccountToken

Unfixed (Manual Action Required)

• service_type
• exposed_services
• run_as_user_group
• liveness_readiness_probes
• image_pull_policy
• stable_api_version
• env_var_duplicates
• drop_all_capabilities
• image_registry_allowlist
• cronjob_deadline

Related Issue

Closes #24

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