Koddi Tag Static

This deployable serves the tag bundle and published schema artifacts. In Phase 3, live artifacts are expected to come from a runtime artifact origin instead of from the static app build.

If PUBLISHED_ARTIFACTS_BASE_URL is configured on the worker, requests under /published-schemas/... are proxied there first. Bundled samples are only used when no runtime artifact origin is configured, or when the explicit dev-only PUBLISHED_ARTIFACTS_ALLOW_BUNDLED_FALLBACK escape hatch is enabled.