diff --git a/incubation/rag/project.rag.md b/incubation/rag/project.rag.md
index 7b4024b..76b0aed 100644
--- a/incubation/rag/project.rag.md
+++ b/incubation/rag/project.rag.md
@@ -38,3 +38,4 @@
 - E-commerce storefronts for high-conversion transactions must be isolated in a dedicated Tenant to manage PCI-DSS compliance, inventory logic, and buyer psychology A/B testing without contaminating creative or promotional Tenants.
 - High-fidelity print-ready PDF generation for self-publishing (e.g., KDP/IngramSpark specs, bleed margins, optical balance) requires a sovereign Tenant rather than tools (Pandoc/Typst) due to non-deterministic aesthetic judgments and platform-specific metadata.
 - Manuscript packaging for print/digital distribution cannot be fully delegated to deterministic tools due to variable inputs (e.g., Word/Markdown inconsistencies) and requires a sovereign Tenant for intelligent oversight.
+- Digital storefronts for authors require Tenant isolation due to transaction security (PCI-DSS), inventory logic, and adaptive UX/A-B testing, which cannot be cleanly extended into existing content packaging or promotion Tenants without charter distortion.