Complete Phase VI research synthesis (SOUL-WP-0007)

Produce concept crosswalk, claims consolidation, fiction conceptual laboratory,
and paper-ready research-synthesis.md integrating phases I–V. Finish SOUL-WP-0007
and mark SOUL-WP-0008 ready for the Soul Frame paper draft.

OpenQuestions.md

@@ -41,13 +41,13 @@ architecture adopted provisionally. Remaining:
 
 ## RQ4 — What constitutes a Soul?
 
-**Phase I–II status:** revised definition (boundary removed); **not closed**.
-Phase II ends by pointing to Cluster D: what persists from interactions beyond
-immediate models (relational persistence = Soul’s domain).
+**Phase VI status:** relational operationalization **supported as direction** (H5);
+boundary removed; Ghost may inherit Soul-relational structure without identity.
+**Still open (paper-critical):**
 
-- Rename vs retain “Soul”
+- Rename vs retain “Soul” (collision cost)
 - Packaging: relations vs consequences vs both
-- Relation to lineage after identity ends
+- Formal Cluster D depth beyond Phase V inheritance claim
 
 ## RQ5 — How does identity persist?