G.7:1 - Problem frame
SoTA synthesis (G.2) can legitimately preserve pluralism by exporting a BridgeMatrix: a Tradition×Tradition inventory of “comparable constructs” with preliminary notes (candidate correspondences, likely losses, tentative levels). When the receiving use requires calibrated cross‑Context reuse, downstream patterns (CHR/CAL/selector/logging/shipping) must ensure that the reuse is:
- recoverable through the actual correspondence and its source basis, including BridgeCards for F.9 rows,
- calibrated with a small, auditable procedure (so CL/CL^k/plane routing is not a narrative),
- published with the anchors required by the receiving use; UTS and E.18/A.21 harnesses apply to their actual public names and flow/gate crossings,
- refreshable in a targeted way (path‑scoped RSCR rather than whole‑pack reruns).
G.7 packages this into a kit: BCT + applicable correspondence references + RegressionSet/SentinelSet wiring, so that later patterns can satisfy core invariants without re‑inventing cross‑Tradition machinery.