Release and updated prerequisite

and updated prerequisite{ Causal-product outcome: Unresolved.

IX-Free-2 is inherited as a relative construction of one truncated partial free product ${\star }_c$ on $D_{\mathrm{decl}}$, including both associations of the selected word through ${\hslash }^3$. Its degree-four descent and declared overlap tests are not reopened here.

The live missing construction is a separate time-ordered extension and the resulting causal retarded maps. The named free sector is not the complete free-product domain of an unspecified general IX-D construction. No sharp ${\mathsf{T}}_2$, normalized $R_1$, or $R_2$ is released by this manuscript.}