fix(plugin): tag registration banner lines with gateway source tag

nemoclaw/src/index.ts

@@ -439,7 +439,7 @@ export default function register(api: OpenClawPluginApi): void {
 
   process.stderr.write("\n");
   for (const line of renderBox(bannerLines)) {
-    process.stderr.write(`${line}\n`);
+    process.stderr.write(`[gateway] ${line}\n`);
   }
   process.stderr.write("\n");
 }

nemoclaw/src/register.test.ts

@@ -167,6 +167,21 @@ describe("plugin registration", () => {
     expect(api.logger.info).not.toHaveBeenCalled();
   });
 
+  it("tags every registration banner line with the gateway source tag (#7314)", () => {
+    const api = createMockApi();
+    register(api);
+
+    const output = stderrOutput();
+    expect(output.startsWith("\n")).toBe(true);
+    expect(output.endsWith("\n\n")).toBe(true);
+
+    const bannerLines = output.split("\n").filter((line) => line.length > 0);
+    expect(bannerLines.length).toBeGreaterThan(0);
+    for (const line of bannerLines) {
+      expect(line.startsWith("[gateway] ")).toBe(true);
+    }
+  });
+
   it("falls back to onboard config when openclaw.json has no primary model", () => {
     mockedLoadOnboardConfig.mockReturnValue({
       endpointType: "build",