diff --git a/.custodian-brief.md b/.custodian-brief.md
index 6a047bc..8eb7880 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -1,12 +1,26 @@
 <!-- custodian-brief: generated by fix-consistency — do not edit manually -->
 # Custodian Brief — the-custodian
 
-**Domain:** custodian  
-**Last synced:** 2026-04-30 14:20 UTC  
+**Domain:** railiance  
+**Last synced:** 2026-04-30 14:24 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
+### Cross-Repo E2E Sandbox Framework
+Progress: 8/8 done  |  workstream_id: `b68de20b-e397-4f97-b1be-ad30711fc2a6`
+
+### Task-Flow-Engine — Declarative Workstation and Requisite Model
+Progress: 0/6 done  |  workstream_id: `781e519b-0dd7-451b-b63c-fad50f999c9c`
+
+**Open tasks:**
+- · T01: Design specification — workstations, assertions, flow definitions  `25ad9022`
+- · T02: Core Python library — pure engine, no FastAPI dependency  `df5ce1f2`
+- · T03: Flow definitions for existing custodian entities  `3d01fc77`
+- · T04: State-hub integration — migrate from enums to engine  `db320d4e`
+- · T05: MCP tools — flow-aware session orientation  `8ea7e49f`
+- · T06: Extraction boundary and future repo scope  `b9242cb4`
+
 ### SCOPE.md Delegation — Custodian Preparation
 Progress: 0/4 done  |  workstream_id: `bf94b5e9-2bc3-4c09-88cd-233849d4d86c`
 
@@ -73,6 +87,6 @@ Progress: 0/9 done  |  workstream_id: `9cc32158-2f5c-4ef6-9713-aacce4623d5e`
 ## MCP Orientation (when available)
 
 If the state-hub MCP server is reachable, call:
-`get_domain_summary("custodian")`
+`get_domain_summary("railiance")`
 This provides richer cross-domain context.
 If the MCP call fails, use this file as your orientation source.