Decides how to store inline content on the paired ArtifactVersion for a
given MIME + base64 InlineData input. Text-y MIMEs get decoded to UTF-8
so artifact tool libraries can parse directly; binary MIMEs keep the
data:<mime>;base64,… wrapper so the resolver can recognize media for
inline routing and the gather path can re-decode to a Buffer for binary
tool libraries (xlsx, docx, pdf).
Decides how to store inline content on the paired ArtifactVersion for a given MIME + base64 InlineData input. Text-y MIMEs get decoded to UTF-8 so artifact tool libraries can parse directly; binary MIMEs keep the
data:<mime>;base64,…wrapper so the resolver can recognize media for inline routing and the gather path can re-decode to a Buffer for binary tool libraries (xlsx, docx, pdf).