refactor(web): migrate telemetry + diagnostics to createWebTelemetry/createWebDiagnostics

- telemetry.ts: 35 → 13 lines via createWebTelemetry()
- diagnostics.ts: 43 → 16 lines via createWebDiagnostics()
- 14/14 web tests pass, typecheck clean

web/src/lib/diagnostics.ts

@@ -1,43 +1,16 @@
 "use client";
 
-import { DiagnosticsClient } from "@bytelyst/diagnostics-client";
+import { createWebDiagnostics } from "@bytelyst/diagnostics-client";
 import { DIAGNOSTICS_URL, PRODUCT_ID } from "@/lib/product-config";
 
-let started = false;
-
-export function initDiagnostics() {
-  if (started) {
-    return DiagnosticsClient.getInstance();
-  }
-
-  const getAuthToken = () => {
-    if (typeof window === "undefined") {
-      return "";
-    }
-
+const { init: initDiagnostics, stop: stopDiagnostics } = createWebDiagnostics({
+  productId: PRODUCT_ID,
+  channel: "notes_web",
+  serverUrl: DIAGNOSTICS_URL,
+  getAuthToken: () => {
+    if (typeof window === "undefined") return "";
     return localStorage.getItem(`${PRODUCT_ID}_access_token`) ?? "";
-  };
+  },
+});
 
-  const client = DiagnosticsClient.getInstance({
-    productId: PRODUCT_ID,
-    anonymousInstallId: `${PRODUCT_ID}-web-install`,
-    platform: "web",
-    channel: "notes_web",
-    osFamily: "macos",
-    appVersion: "0.1.0",
-    buildNumber: "1",
-    releaseChannel: "dev",
-    serverUrl: DIAGNOSTICS_URL,
-    getAuthToken,
-    pollIntervalMs: 30000,
-    captureConsole: false,
-    captureErrors: true,
-    captureNetwork: false,
-  });
-
-  client.start().catch(() => {
-    // Diagnostics is best-effort during scaffold phase.
-  });
-  started = true;
-  return client;
-}
+export { initDiagnostics, stopDiagnostics };

web/src/lib/telemetry.ts

@@ -1,35 +1,13 @@
 "use client";
 
-import { createTelemetryClient } from "@bytelyst/telemetry-client";
+import { createWebTelemetry } from "@bytelyst/telemetry-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID, TELEMETRY_TRANSPORT } from "@/lib/product-config";
 
-let initialized = false;
-
-const telemetryClient = createTelemetryClient({
+const { client: telemetryClient, init: initTelemetry, trackPageView } = createWebTelemetry({
   productId: PRODUCT_ID,
-  baseUrl: PLATFORM_SERVICE_URL,
-  endpoint: "/telemetry/events",
-  platform: "web",
   channel: "notes_web",
+  baseUrl: PLATFORM_SERVICE_URL,
   transport: TELEMETRY_TRANSPORT,
-  appVersion: "0.1.0",
-  buildNumber: "1",
-  releaseChannel: "dev",
-  osFamily: "other",
 });
 
-export function initTelemetry() {
-  if (initialized) return telemetryClient;
-  telemetryClient.init();
-  telemetryClient.trackEvent("info", "app_shell", "web_app_initialized");
-  initialized = true;
-  return telemetryClient;
-}
-
-export function trackPageView(page: string) {
-  telemetryClient.trackEvent("info", "navigation", "page_view", {
-    feature: page,
-  });
-}
-
-export { telemetryClient };
+export { telemetryClient, initTelemetry, trackPageView };