[SandObserver]

Summary

• Replace optionsErrorText with optionsErrorAdvice, returning { tone, message } in the same shape as badgeErrorAdvice, so the two paths cannot disagree about a failure.
• Apply the tone to the Fetch status row in both the select and picklist controls, adding a .row-status.warn rule.
• Add a --warning token and use it for the badge status too, replacing the hardcoded #ff9f0a / #ff453a pair, which did not follow the increased-contrast palette in dark mode.

Testing
All green, including the homelab Docker build. Added 1 assertion pair for the Fetch tone and moved the existing optionsErrorText tests onto the new return shape.

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.