diff --git a/.custodian-brief.md b/.custodian-brief.md
index 62908bd..2995075 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,13 +2,13 @@
 # Custodian Brief — artifact-store
 
 **Domain:** stack  
-**Last synced:** 2026-05-15 16:31 UTC  
+**Last synced:** 2026-05-15 19:25 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
-### Artifact Store Service Baseline
-Progress: 0/8 done  |  workstream_id: `aebf996c-8721-4e8c-9e56-61d5e4bf8dcb`
+### Foundation: Scaffold, Core Kernels, Local FS Backend
+Progress: 0/14 done  |  workstream_id: `aebf996c-8721-4e8c-9e56-61d5e4bf8dcb`
 
 **Open tasks:**
 - · D1.1 - Service Scaffold And Repository Identity  `84209430`
@@ -18,7 +18,48 @@ Progress: 0/8 done  |  workstream_id: `aebf996c-8721-4e8c-9e56-61d5e4bf8dcb`
 - · D1.5 - Retention Baseline  `2d6cbd83`
 - · D1.6 - S3-Compatible Backend Design Hook  `7b980a55`
 - · D1.7 - Guide-Board Pilot Ingestion  `eb822821`
-- … and 1 more open tasks
+- … and 7 more open tasks
+
+### Ingestion API And Manifest Surface
+Progress: 0/6 done  |  workstream_id: `cedbfe03-363c-43fd-a5cb-bef52b29af7e`
+
+**Open tasks:**
+- · D2.1 - Package CRUD Endpoints  `197e22ff`
+- · D2.2 - File Download And Range Reads  `9c8c3853`
+- · D2.3 - Upload Session Resource (Wire Shape Pinned)  `710bbd2f`
+- · D2.4 - Event Stream Long-Poll  `d848bc41`
+- · D2.5 - Auth Scaffolding (Shared-Secret Bearer)  `27d33e90`
+- · D2.6 - Integration Tests Through The Full HTTP Surface  `f422696f`
+
+### Retention Lifecycle: Defaults, Extensions, Holds, Deletion Eligibility
+Progress: 0/5 done  |  workstream_id: `84930f4c-3bcf-415e-a94c-bfa854a15871`
+
+**Open tasks:**
+- · D3.1 - Default Retention Application  `25531837`
+- · D3.2 - Retention Extensions  `66576e53`
+- · D3.3 - Holds (Apply And Release)  `8164e448`
+- · D3.4 - Deletion Eligibility Sweeper  `fe13cd0d`
+- · D3.5 - Audit Surface For Retention  `7dce0c92`
+
+### Guide-Board Pilot Ingestion
+Progress: 0/5 done  |  workstream_id: `701c4d8c-5cf4-4a4a-ab60-1dcae53fe771`
+
+**Open tasks:**
+- · D5.1 - Pilot Metadata Schema Registration  `830f6822`
+- · D5.2 - Pilot Ingest Helper (CLI + Library Function)  `ff0ba2eb`
+- · D5.3 - Fixture-Based Test  `5c367257`
+- · D5.4 - Statehub Linkage Recipe  `b1ca7133`
+- · D5.5 - Operator Smoke Procedure For The Real Producer  `bffa3573`
+
+### S3-Compatible Backend (Ceph RGW Target)
+Progress: 0/5 done  |  workstream_id: `d0526cfc-e532-431f-970d-f3e548d27a80`
+
+**Open tasks:**
+- · D4.1 - Configuration Surface  `1db0d548`
+- · D4.2 - S3 Backend Implementation  `14b50595`
+- · D4.3 - Backend Selection And Routing  `725dafd6`
+- · D4.4 - Test Strategy: MinIO In CI, RGW As Documented Manual Smoke  `4fd7b73b`
+- · D4.5 - Verification Pass  `5a55546f`
 
 ---
 ## MCP Orientation (when available)