e6a5e1e6ab
A thrown fetch error (DNS failure, connection refused, timeout) never reached the res.ok branch, so its actual cause was lost — err.message alone is often just "fetch failed" with the real reason nested in err.cause. Now logs the full cause server-side and folds it into the error returned to the admin support view's tooltip. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>