diff --git a/00-META/process/07-feature-branches.md b/00-META/process/07-feature-branches.md
index 0988fd79..cd4533fc 100644
--- a/00-META/process/07-feature-branches.md
+++ b/00-META/process/07-feature-branches.md
@@ -240,6 +240,25 @@ lead prepares a `/clear` as the mesh's instruction "prepare before clear" says:
 feature's phase, its branches and heads, the context files' paths, the agents' ids, the wait list and the
 next action; then the prompt the operator pastes. The context files make the feature resumable after a clear.
 
+## The design's state is written back
+
+Other sessions know what is built only from the design's frontmatter and the issue tracker; what the lead
+knows and does not write back, nobody else knows. A design merged as one release with three of its tasks
+left, its frontmatter still saying `designed`, read to another session as not built, and a second design
+was started beside it (issue 1009, 2026-10-17). So the lead writes the design's state back at each of these
+moments, the same hour, an hq change going through [playbook 08](08-small-fixes.md):
+
+- **The first step starts:** the design's `status: in-progress` ([playbook 04](04-build-handoff.md) step 7),
+  if it is not already.
+- **A step's delivery plan is done:** its issues are resolved (phase 4), and the design's milestone entry says
+  it is delivered, with the date.
+- **The building pauses with work left** (another design takes its turn, a hand-over, the session's end): the
+  design stays `in-progress`, and each issue left gets a note with `issue-tracker.note` saying what it waits
+  for and what comes after it ("built after design N is delivered, before design M"). The first issue of
+  a design that waits its turn gets the same note.
+- **The last milestone is delivered:** [playbook 02](02-graduation.md), "When something ships": the as-is is
+  written and the design says `implemented`.
+
 ## Issues that stop
 
 An issue stays in `fixing` only while an agent works on it. A step that stops, for a wait past its bound, a
@@ -254,6 +273,9 @@ issues in `fixing` that nobody works on reads to the operator as stuck work.
   phase 1, is the failure this playbook prevents.
 - A context file exists per touched repository under `.work/<slug>/` while the feature runs.
 - After a feature's delivery, `git branch -r | grep feat/<slug>` and `git worktree list` return nothing for it.
+- A design whose milestone issues are partly resolved says `in-progress`, and one whose issues are all
+  resolved and delivered says `implemented`: read its Milestones section against `issue-tracker.get` for each
+  issue. A design that says `designed` with a resolved milestone issue is a state not written back.
 - The milestone issues in `fixing` (`issue-tracker.list`) belong to one design at most: milestone issues
   of two designs in `fixing` at once is the failure of "one design is built at a time".
 - More than one open pull request in a repository that share no feature name, or a feature step whose issues
diff --git a/03-DESIGN/01-to-be/57-building-config-and-provisioning.md b/03-DESIGN/01-to-be/57-building-config-and-provisioning.md
index f9a8a7c9..80da4148 100644
--- a/03-DESIGN/01-to-be/57-building-config-and-provisioning.md
+++ b/03-DESIGN/01-to-be/57-building-config-and-provisioning.md
@@ -1,8 +1,8 @@
 ---
 layer: to-be
-status: designed
+status: in-progress
 code: [mesh-controller, mesh-host, mesh-sdk, mesh-catalog]
-updated: 2026-10-14
+updated: 2026-10-17
 decisions:
   - "ADR 0348"
   - "ADR 0349"
@@ -61,6 +61,11 @@ both, by the form of its manifest, and the old forms stay accepted until the las
 Inside the release this still holds: the media catalogue and the applications kept in their own
 repositories move after it, so the old forms stay accepted until they have (R1).
 
+**Where it stands, 2026-10-17.** The release is merged into main of mesh-controller, the node-engine
+(`mesh-host`) and mesh-catalog, and delivered. Every package but B3, R1 and R2 is resolved. Those three
+(issues 680, 682 and 683) are built after design 47's milestones are delivered and before design 58 starts,
+the operator's decision of 2026-10-17 (one design is built at a time, playbook 07).
+
 ## What exists already, measured
 
 Counted 2026-10-14 at mesh-controller `1601cb1`, the node-engine (`mesh-host`) `1a26778`, mesh-sdk `a2d2af0`, mesh-catalog