Deployment Notes

FEATURE_DESIGN_SYSTEM rollout

Default: true (design system styling). The flag lives in js/constants.js and is exposed through window.__BITVID_RUNTIME_FLAGS__ at runtime.
Enable for canaries: No action required—the new primitives ship enabled by default.
Disable / rollback: Set the flag to false via the runtime object or redeploy with an override. All root containers revert to data-ds="new", forcing controllers and templates to stay on the existing class list.
Template contract: Every layout, view, and partial now includes data-ds on the root element. Keep this attribute intact when editing HTML so the runtime can swap modes without re-rendering.
Controllers: UI controllers receive a designSystem context in their constructors. Call context.isNew() before attaching new components or classes, and lean on context.getMode() when logging or telemetry need to differentiate between legacy and new renders.