- scriptui.js: replace the self-comparison NaN check (o.max === o.max) with
the explicit Number.isNaN(o.max) (S1764).
- sw.js: mark the fire-and-forget cache.put() with void and a .catch() so the
promise rejection is handled (S9383).
- prelude.js: return __err(...) from the activeCamera getter so every path
yields a value (S4275); __err always throws, so behavior is unchanged.