From 9c70fa65996cc74bfc46700098be1dec0cf17bdf Mon Sep 17 00:00:00 2001
From: jochen <jschoubben@gmail.com>
Date: Thu, 12 Nov 2026 01:02:09 +0100
Subject: [PATCH] Fix 9.5: the seat node-build-image's build acting rule acts
 on kind:image
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Builds: design 47 G §324, §397

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
---
 .../go/seats/nodebuildimage/acts_test.go      | 24 +++++++++++++++++++
 contracts/seats/node-build-image/seat.json    |  7 ++++++
 2 files changed, 31 insertions(+)
 create mode 100644 contracts/go/seats/nodebuildimage/acts_test.go

diff --git a/contracts/go/seats/nodebuildimage/acts_test.go b/contracts/go/seats/nodebuildimage/acts_test.go
new file mode 100644
index 00000000..7fc457f0
--- /dev/null
+++ b/contracts/go/seats/nodebuildimage/acts_test.go
@@ -0,0 +1,24 @@
+package nodebuildimage
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+)
+
+// The seat's `build` acting rule matches an artifact by its kind, an image having no language (design 47 G §324, §397).
+func TestTheSeatsBuildRuleActsOnTheKindImage(t *testing.T) {
+	raw, err := os.ReadFile("../../../seats/node-build-image/seat.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var def struct {
+		Acts []struct{ Step, On, Bound string } `json:"acts"`
+	}
+	if err := json.Unmarshal(raw, &def); err != nil {
+		t.Fatal(err)
+	}
+	if len(def.Acts) != 1 || def.Acts[0].Step != "build" || def.Acts[0].On != "kind:image" {
+		t.Errorf("acts = %+v; wanted the one rule {build, kind:image}", def.Acts)
+	}
+}
diff --git a/contracts/seats/node-build-image/seat.json b/contracts/seats/node-build-image/seat.json
index 5528da1f..57b1f438 100644
--- a/contracts/seats/node-build-image/seat.json
+++ b/contracts/seats/node-build-image/seat.json
@@ -7,6 +7,13 @@
   "decision": "novox/hq ADR 0525, ADR 0536, ADR 0553",
   "pulled-by-kind": true,
   "yields": true,
+  "acts": [
+    {
+      "step": "build",
+      "on": "kind:image",
+      "bound": "60m"
+    }
+  ],
   "accepts": [
     {
       "name": "delivery",