6f9ed5cb

By: lcnbr <im@lcnbr.ch>

Refine generation by compatible flavour classes

Apply the reviewed P4 flavour-class generation overlay to the closed SIDE
parent. Preserve its canonicalization, interactive drawing, portal illustration,
Kurvst registry and intervening runtime fixes. Retain bounded generation,
explicit counters and grouped-row physical checks.

This initial local candidate still needs fresh metadata and all seven canonical
API outputs, followed by the final-source native, physical, performance and
packaging validation. CI remains disabled; no validation completion or
publication is claimed.