21-check automated verification demo videos

[sodiq-code]

Summary

• align Backstage template files with non-functional YAML cleanup (no behavior change)
• reinforce Kyverno policy file consistency for enforcement configuration (no rule logic change)
• add smoke-test demo video reference in the main README

Why

• improve maintainability and readability in Backstage and Kyverno manifests
• keep governance intent explicit while preserving existing enforcement behavior
• surface automated verification demo evidence directly in project documentation

Scope and Safety

• formatting/docs-only updates
• no functional changes to deployment flow, policy behavior, or runtime components

[github-actions]

💰 Resource Request Delta

No Deployment or InferenceService changes detected in apps/.

ℹ️ This check reports resource requests for manifests added or modified under apps/.