The placement reader names the seat mesh-placement's state, held by the assigner, as L2 moved it (issue 774, ADR 0567)

go/delivery/buildrun/standing.go

@@ -21,14 +21,15 @@ import (
 // ace.typescript at v26.12.0, and every Node fingerprint said "builders disagree").
 //
 // ToolchainGate stands between the toolchains buckets and what takes their entries in (the indexer's PutToolchain, a
-// ToolchainSet): an entry is passed on only while the catalogue's placement (the indexer's state `placement`, read by
-// delivery.Placed; ADR 0549 §3) places its build module on its node, and only once it was written since that placement;
-// it is passed on as deleted otherwise, said once, and passed on when its node writes it again. A report written before
-// the placement is one an earlier run of the module left (issue 1940, 2026-10-25 20:56: mesh-build-node put on ace again
-// brought ace.typescript v26.12.0 of 2026-10-23 back into the agreement before the module ran there). Until the
-// placement is settled, and while no node's placement is held (before the first placement file reaches the indexer, or
-// where the state cannot be read), every entry is passed on. Builders that run and report different versions still
-// disagree: that refusal is the guard of novox/hq ADR 0465, and it stays.
+// ToolchainSet): an entry is passed on only while the placement (the seat mesh-placement's state `placement`, held by
+// the assigner, delivery.PlacementBucket, read by delivery.Placed; ADR 0567, ADR 0549 §3) places its build module on
+// its node, and only once it was written since that placement; it is passed on as deleted otherwise, said once, and
+// passed on when its node writes it again. A report written before the placement is one an earlier run of the module
+// left (issue 1940, 2026-10-25 20:56: mesh-build-node put on ace again brought ace.typescript v26.12.0 of 2026-10-23
+// back into the agreement before the module ran there). Until the placement is settled, and while no node's placement
+// is held (before the assigner's adopt writes the first one, or where the state cannot be read), every entry is passed
+// on. Builders that run and report different versions still disagree: that refusal is the guard of novox/hq ADR 0465,
+// and it stays.
 //
 // This replaces the copies of the gate the indexer, the builder and the checker each kept over the controller's
 // assignments (issue 1940's subtask, issue 774: those go with the controller's lease, ADR 0549 §6).
@@ -69,7 +70,7 @@ func (g *ToolchainGate) Toolchain(module, key string, value []byte, deleted bool
 	return g.pass(module, key)
 }
 
-// Placement takes one revision of the indexer's placement in (at is when the bus wrote it) and answers whether what it
+// Placement takes one revision of the seat mesh-placement's placement in (at is when the bus wrote it) and answers whether what it
 // passed on changed. A value that does not read is said, and places nothing on its node.
 func (g *ToolchainGate) Placement(key string, value []byte, deleted bool, at time.Time) bool {
 	g.mu.Lock()
@@ -164,7 +165,7 @@ func (g *ToolchainGate) leftOut(module, node string, value []byte) string {
 	return ""
 }
 
-// FollowPlacement reads the indexer's placement with its history into gate, says it settled, and follows it; changed
+// FollowPlacement reads the seat mesh-placement's placement with its history into gate, says it settled, and follows it; changed
 // is told whenever what the gate passes on changed. Where the state cannot be read or watched (not there, or this part
 // may not read it) it says so and the gate passes every report on: not fatal, since an indexer, builder or checker that
 // stops for it stops every delivery (issue 1945). An error of the watch after that ends on the channel.

go/delivery/buildrun/standing_test.go

@@ -202,7 +202,7 @@ func TestToolchainGate(t *testing.T) {
 	t.Run("a placement the bus refuses is said, and the part goes on", func(t *testing.T) {
 		var logs bytes.Buffer
 		logger := log.New(&logs, "", 0)
-		refused := errors.New("nats: permissions violation for publish to $JS.API.CONSUMER.CREATE.KV_mesh-delivery-indexer_placement")
+		refused := errors.New("nats: permissions violation for publish to $JS.API.CONSUMER.CREATE.KV_mesh-delivery-assigner_placement")
 		gate, _, _ := start(t, false)
 		for _, bus := range []refusingBus{{err: refused}, {refuseOpen: true, err: refused}} {
 			if _, err := FollowPlacement(context.Background(), bus, gate, func(context.Context) {}, logger.Printf); err != nil {

go/delivery/placed.go

@@ -8,7 +8,7 @@ import (
 	"time"
 )
 
-// Placed is where the indexer's placement (the state `placement`, ADR 0549 §2, §3) places each module, and since when:
+// Placed is where the placement (the seat mesh-placement's state `placement`, held by the assigner; ADR 0567, ADR 0549 §3) places each module, and since when:
 // the one reader of that state for every part that asks "does module stand on node" (issue 774, design 47's third
 // milestone), in place of each part reading the controller's assignments (`mesh-controller_assignments`, which goes
 // with the controller's lease, ADR 0549 §6).
@@ -84,7 +84,7 @@ func (p *Placed) Put(key string, value []byte, deleted bool, at time.Time) (node
 	return node, changed, err
 }
 
-// Seeded says some node's placement is held: before the first placement file reaches the indexer nothing is placed,
+// Seeded says some node's placement is held: before the assigner's adopt writes the first placement nothing is placed,
 // and a reader keeps what it did before (ADR 0549 §5).
 func (p *Placed) Seeded() bool {
 	p.mu.Lock()