Add issue 401's replay, written with what the controller had before its fix, so the lab can prove it

The fix's own test reads GivenOwnSecret, which the commit before does not have, so it cannot be laid over it. TestReplay401 asserts the same outcome with register, assign, planFor, declarationFor and the inventory's secret reads; it fails on 1e28342^1 and passes on main. Named in testdata/store-tests so a skip without the store fails the check. Replay for hq issue 401.

cmd/mesh-controller/replay401_test.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"testing"
+
+	"github.com/novox/mesh-controller/internal/catalogue"
+)
+
+// TestReplay401 replays novox/hq issue 401 (2026-10-10): the mounts module's smb-credentials, an own secret
+// only an outside party issues, was given by nobody, and the send made a random value for it and placed it on
+// the machine; the module read it as a credential given and wrong. The outcome asserted (ADR 0228): the send
+// makes no value for an own secret issued outside the mesh that nobody gave and places none, and a value the
+// mesh made for it before is not placed either; once a person gives one, that value is placed. Written with
+// only what the controller had before its fix (mesh-controller #262) — register, assign, planFor,
+// declarationFor and the inventory's secret reads — so it is laid over the commit before. Needs the store
+// (MESH_TEST_POSTGRES), and is named in testdata/store-tests.
+func TestReplay401(t *testing.T) {
+	open := aMesh(t)
+	ctx := t.Context()
+	const made, outside = "/var/lib/mesh/mounts/password", "/var/lib/mesh/mounts/smb-credentials"
+	register(t, open, catalogue.Manifest{Module: "mounts", Version: "1",
+		OwnSecrets: catalogue.OwnSecrets{
+			"password":        {Path: made, Taken: catalogue.TakenAtStart},
+			"smb-credentials": {Path: outside, Taken: catalogue.TakenAtStart, IssuedBy: catalogue.IssuedOutside},
+		},
+		Resources: []map[string]any{
+			{"id": "state", "type": "directory", "path": "/var/lib/mesh/mounts", "mode": "0700"},
+		}})
+	if _, err := assign(ctx, open, "laptop", "mounts"); err != nil {
+		t.Fatal(err)
+	}
+	sent := func() []map[string]any {
+		t.Helper()
+		plan, settings, err := planFor(ctx, open, "laptop")
+		if err != nil {
+			t.Fatal(err)
+		}
+		declared, err := declarationFor(ctx, open, "laptop", plan, settings)
+		if err != nil {
+			t.Fatalf("the send to laptop did not compose: %v", err)
+		}
+		return declared.Resources
+	}
+	placed := func(resources []map[string]any, path string) map[string]any {
+		for _, r := range resources {
+			if r["path"] == path && r["sealed"] != nil {
+				return r
+			}
+		}
+		return nil
+	}
+
+	first := sent()
+	if placed(first, made) == nil {
+		t.Fatal("the secret the mesh makes was not placed")
+	}
+	if got := placed(first, outside); got != nil {
+		t.Errorf("the send placed a value for smb-credentials, which nobody gave: %v", got)
+	}
+	if _, held, err := open.inventory.ModuleSecretIfIssued(ctx, "laptop", "mounts", "smb-credentials"); err != nil || held {
+		t.Fatalf("the send made a value for a secret issued outside the mesh (held %v, %v)", held, err)
+	}
+
+	// A value the mesh made for it before the rule is not one a person gave: it is not placed.
+	if _, err := open.inventory.SecretForModule(ctx, "laptop", "mounts", "smb-credentials"); err != nil {
+		t.Fatal(err)
+	}
+	if got := placed(sent(), outside); got != nil {
+		t.Fatalf("a value the mesh made for a secret issued outside was placed: %v", got)
+	}
+
+	// Given by a person, it is placed, as given.
+	if err := open.inventory.AcceptSecretForModule(ctx, "laptop", "mounts", "smb-credentials", "the share's credentials"); err != nil {
+		t.Fatal(err)
+	}
+	given, held, err := open.inventory.ModuleSecretIfIssued(ctx, "laptop", "mounts", "smb-credentials")
+	if err != nil || !held {
+		t.Fatalf("the value given is not held (%v)", err)
+	}
+	if got := placed(sent(), outside); got == nil || got["sealed"] != given {
+		t.Fatalf("the value given is placed as %v", got)
+	}
+}

testdata/store-tests

@@ -29,3 +29,4 @@
 ./cmd/mesh-controller TestADirectoryOwnersKeyIsRefusedThroughAVerb
 ./cmd/mesh-controller TestTheSendMakesNoValueForAnOutsideSecretNobodyGave
 ./cmd/mesh-controller TestAQuestionComposesWithoutAnOutsideSecretNobodyGave
+./cmd/mesh-controller TestReplay401