SecretReveal (the post-submit redacted state) used bespoke h-9/rounded-md/px-2.5
chrome with an absolutely-positioned copy button, instead of the canonical
chip-field chrome (h-[30px]/rounded-lg/px-2) that SecretInput (the pre-submit
state) uses. That mismatch made the credential-paste widget visibly resize
right after saving. Rebuilt SecretReveal on the same chipFieldSurfaceClass
tokens as ChipInput, with the copy button as an inline trailing adornment.