[AmrMsCLL]

What changed

• Removes compose.production.yaml: production values now live in platform/deploy/<slug>/values.yaml.
• The .graphite.yml skeleton shows the new compose shape (host only) and the pages command.
• README setup steps: write the values in platform and have an owner add the secrets.

Verification

platform/scripts/sync.py project-template .graphite.yml reports a valid manifest against the new schema.

Checklist

• The change is focused and contains no credentials or generated secrets.
• Documentation and tests were updated when behavior changed.
• Deployment or rollback considerations are described when relevant.