diff --git a/apps/web-next/src/server/bind-production.test.ts b/apps/web-next/src/server/bind-production.test.ts
index f4c8ca8..ebfff8e 100644
--- a/apps/web-next/src/server/bind-production.test.ts
+++ b/apps/web-next/src/server/bind-production.test.ts
@@ -11,6 +11,14 @@ vi.mock("@repo/auth/di/bind-dev-seed", () => ({ bindDevSeedAuth: vi.fn() }));
 vi.mock("@repo/marketing-pages/di/bind-dev-seed", () => ({ bindDevSeedMarketingPages: vi.fn() }));
 vi.mock("@repo/navigation/di/bind-dev-seed", () => ({ bindDevSeedNavigation: vi.fn() }));
 vi.mock("@repo/media/di/bind-dev-seed", () => ({ bindDevSeedMedia: vi.fn() }));
+vi.mock("@repo/core-shared/instrumentation", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@repo/core-shared/instrumentation")>();
+  return {
+    ...actual,
+    bindSentryInstrumentation: vi.fn(actual.bindSentryInstrumentation),
+    bindNoopInstrumentation: vi.fn(actual.bindNoopInstrumentation),
+  };
+});
 
 describe("bindAllProduction", () => {
   beforeEach(() => {
@@ -105,3 +113,69 @@ describe("bindAll dispatcher", () => {
     expect(bindDevSeedBlog).not.toHaveBeenCalled();
   });
 });
+
+describe("bindAll instrumentation orthogonality (Rule 0, R47)", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    vi.clearAllMocks();
+    vi.unstubAllEnvs();
+  });
+
+  afterEach(() => {
+    vi.unstubAllEnvs();
+  });
+
+  it("DSN absent → bindNoopInstrumentation regardless of NODE_ENV (R48)", async () => {
+    vi.stubEnv("WEB_NEXT_SENTRY_DSN", "");
+    vi.stubEnv("NODE_ENV", "production");
+    const { bindAll } = await import("./bind-production");
+    const { bindNoopInstrumentation, bindSentryInstrumentation } = await import(
+      "@repo/core-shared/instrumentation"
+    );
+
+    await bindAll();
+
+    expect(bindNoopInstrumentation).toHaveBeenCalledOnce();
+    expect(bindSentryInstrumentation).not.toHaveBeenCalled();
+  });
+
+  it("DSN set → bindSentryInstrumentation regardless of NODE_ENV", async () => {
+    vi.stubEnv("WEB_NEXT_SENTRY_DSN", "https://x@y/1");
+    vi.stubEnv("NODE_ENV", "development");
+    const { bindAll } = await import("./bind-production");
+    const { bindNoopInstrumentation, bindSentryInstrumentation } = await import(
+      "@repo/core-shared/instrumentation"
+    );
+
+    await bindAll();
+
+    expect(bindSentryInstrumentation).toHaveBeenCalledOnce();
+    expect(bindNoopInstrumentation).not.toHaveBeenCalled();
+  });
+
+  it("Sentry instrumentation works alongside dev seed (USE_DEV_SEED=true)", async () => {
+    vi.stubEnv("USE_DEV_SEED", "true");
+    vi.stubEnv("WEB_NEXT_SENTRY_DSN", "https://x@y/1");
+    const { bindAll } = await import("./bind-production");
+    const { bindSentryInstrumentation } = await import("@repo/core-shared/instrumentation");
+    const { bindDevSeedBlog } = await import("@repo/blog/di/bind-dev-seed");
+
+    await bindAll();
+
+    expect(bindSentryInstrumentation).toHaveBeenCalledOnce();
+    expect(bindDevSeedBlog).toHaveBeenCalledOnce();
+  });
+
+  it("Noop instrumentation works alongside production binding (DSN unset, NODE_ENV=production)", async () => {
+    vi.stubEnv("WEB_NEXT_SENTRY_DSN", "");
+    vi.stubEnv("NODE_ENV", "production");
+    const { bindAll } = await import("./bind-production");
+    const { bindNoopInstrumentation } = await import("@repo/core-shared/instrumentation");
+    const { bindProductionBlog } = await import("@repo/blog/di/bind-production");
+
+    await bindAll();
+
+    expect(bindNoopInstrumentation).toHaveBeenCalledOnce();
+    expect(bindProductionBlog).toHaveBeenCalledOnce();
+  });
+});