[SandObserver]

Summary

• Add a three-line Supporting Stackyard section at the top of docs/support.md: share it, open an issue, or use the Buy Me a Coffee link.
• Leave the help, log-reading and troubleshooting content unchanged.

Testing
All green. No new coverage; docs only.

Checklist

• Stays within the project constraints: one container, no runtime dependencies, no build step (see CONTRIBUTING.md).
• Tests added or updated for new logic, and the full suite, lint, and typechecks pass.
• Docs updated if behavior or configuration changed.
• CHANGELOG.md updated under Unreleased if the change is user-visible.