Coarse-graining support: Support.Book.Ch05.Theorems.Section52

Imported from the Apache-2.0 CoarseGraining development at commit c7ddd76c08ade64fed1b8d2ca51be14dfee8deb4.

Section 5.2: annealed scalar identities and moment bounds

This compatibility module re-exports the split Section 5.2 theorem files. The public theorem surface is unchanged:

• multiscaleEllipticityMomentBounds_homogenizationScale;
• scalarPreliminaries_homogenizationScale;
• centeredResponses_homogenizationScale.