fix: harden M3 simulator identities and wiring

internal/patchpanel/runtime.test.mjs

@@ -1,6 +1,7 @@
 import assert from "node:assert/strict";
 import test from "node:test";
 
+import { createM3Topology } from "./fixture.mjs";
 import { createWiringConfig } from "./model.mjs";
 import { createPatchPanelRuntime } from "./runtime.mjs";
 
@@ -110,3 +111,55 @@ test("runtime reports missing target endpoint as readable diagnostics", async ()
   assert.equal(result.deliveryCount, 1);
   assert.ok(result.diagnostics.some((diagnostic) => diagnostic.code === "target_endpoint_missing"));
 });
+
+test("runtime applies first-class DEV M3 wiring config for res_boxsimu_1 DO1 to res_boxsimu_2 DI1", async () => {
+  const topology = createM3Topology();
+  const writes = [];
+  const runtime = createPatchPanelRuntime({
+    wiringConfig: topology.wiringConfig,
+    endpointMap: {
+      res_boxsimu_2: "http://hwlab-box-simu-2.hwlab-dev.svc.cluster.local:7201"
+    },
+    configSource: "env:HWLAB_PATCH_PANEL_WIRING_CONFIG",
+    now: () => "2026-05-21T00:00:01.000Z",
+    requestJson: async (url, body) => {
+      writes.push({ url, body });
+      return {
+        status: 200,
+        json: {
+          accepted: true
+        }
+      };
+    }
+  });
+
+  assert.equal(runtime.status().state, "active");
+  assert.equal(runtime.status().metadata.configSource, "env:HWLAB_PATCH_PANEL_WIRING_CONFIG");
+  assert.deepEqual(runtime.status().activeConnections, [
+    {
+      fromResourceId: "res_boxsimu_1",
+      fromPort: "DO1",
+      toResourceId: "res_boxsimu_2",
+      toPort: "DI1"
+    }
+  ]);
+
+  const result = await runtime.routeSignal({
+    fromResourceId: "res_boxsimu_1",
+    fromPort: "DO1",
+    value: true
+  });
+
+  assert.equal(result.accepted, true);
+  assert.equal(result.propagatedBy, "hwlab-patch-panel");
+  assert.equal(result.deliveryCount, 1);
+  assert.equal(writes.length, 1);
+  assert.equal(
+    writes[0].url,
+    "http://hwlab-box-simu-2.hwlab-dev.svc.cluster.local:7201/internal/ports/write"
+  );
+  assert.equal(writes[0].body.port, "DI1");
+  assert.equal(writes[0].body.sourceResourceId, "res_boxsimu_1");
+  assert.equal(writes[0].body.sourcePort, "DO1");
+  assert.equal(writes[0].body.propagatedBy, "hwlab-patch-panel");
+});