fix(web): fix auth token key inconsistency and DRY getAccessToken()

feature-flags.ts and prompt-client.ts used bare 'access_token' key
instead of PRODUCT_ID-prefixed key — auth tokens were never sent.

Consolidates 10 web lib files to import the shared getAccessToken()
from api-helpers.ts instead of each redefining their own copy.

web/src/lib/blob-client.ts

@@ -2,11 +2,7 @@
 
 import { createBlobClient } from "@bytelyst/blob-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
-
+import { getAccessToken } from "@/lib/api-helpers";
-function getAccessToken(): string | null {
-  if (typeof window === "undefined") return null;
-  return localStorage.getItem(`${PRODUCT_ID}_access_token`);
-}
 
 let _blobClient: ReturnType<typeof createBlobClient> | null = null;
 function getBlobClient() {

web/src/lib/broadcast-client.ts

@@ -2,11 +2,7 @@
 
 import { createBroadcastClient, type BroadcastClient } from "@bytelyst/broadcast-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
-
+import { getAccessToken } from "@/lib/api-helpers";
-function getAccessToken(): string {
-  if (typeof window === "undefined") return "";
-  return localStorage.getItem(`${PRODUCT_ID}_access_token`) ?? "";
-}
 
 let _client: BroadcastClient | null = null;
 export function getBroadcastClient(): BroadcastClient {
@@ -14,7 +10,7 @@ export function getBroadcastClient(): BroadcastClient {
     _client = createBroadcastClient({
       baseUrl: PLATFORM_SERVICE_URL,
       productId: PRODUCT_ID,
-      getAuthToken: getAccessToken,
+      getAuthToken: () => getAccessToken() ?? "",
       platform: "web",
       appVersion: "0.1.0",
       osVersion: typeof navigator !== "undefined" ? navigator.userAgent.slice(0, 40) : "unknown",

web/src/lib/diagnostics.ts

@@ -2,15 +2,13 @@
 
 import { createWebDiagnostics } from "@bytelyst/diagnostics-client";
 import { DIAGNOSTICS_URL, PRODUCT_ID } from "@/lib/product-config";
+import { getAccessToken } from "@/lib/api-helpers";
 
 const { init: initDiagnostics, stop: stopDiagnostics } = createWebDiagnostics({
   productId: PRODUCT_ID,
   channel: "notes_web",
   serverUrl: DIAGNOSTICS_URL,
-  getAuthToken: () => {
+  getAuthToken: () => getAccessToken() ?? "",
-    if (typeof window === "undefined") return "";
-    return localStorage.getItem(`${PRODUCT_ID}_access_token`) ?? "";
-  },
 });
 
 export { initDiagnostics, stopDiagnostics };

web/src/lib/extraction-client.ts

@@ -2,13 +2,9 @@
 
 import { createExtractionClient, type ExtractionClient } from "@bytelyst/extraction";
 import { EXTRACTION_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
+import { getAccessToken } from "@/lib/api-helpers";
 import type { NoteTask } from "@/lib/types";
 
-function getAccessToken(): string | null {
-  if (typeof window === "undefined") return null;
-  return localStorage.getItem(`${PRODUCT_ID}_access_token`);
-}
-
 let _client: ExtractionClient | null = null;
 function getClient(): ExtractionClient {
   if (!_client) {

web/src/lib/feature-flags.ts

@@ -2,6 +2,7 @@
 
 import { createFeatureFlagClient } from "@bytelyst/feature-flag-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
+import { getAccessToken } from "@/lib/api-helpers";
 
 let initialized = false;
 
@@ -11,10 +12,7 @@ const featureFlagClient = createFeatureFlagClient({
   platform: "web",
   useStreaming: true,
   pollIntervalMs: 5 * 60 * 1000,
-  getAccessToken: () =>
+  getAccessToken,
-    typeof window !== "undefined"
-      ? localStorage.getItem("access_token")
-      : null,
 });
 
 export async function initFeatureFlags(userId?: string) {

web/src/lib/feedback-client.ts

@@ -2,11 +2,7 @@
 
 import { createFeedbackClient, type FeedbackClient } from "@bytelyst/feedback-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
-
+import { getAccessToken } from "@/lib/api-helpers";
-function getAccessToken(): string | null {
-  if (typeof window === "undefined") return null;
-  return localStorage.getItem(`${PRODUCT_ID}_access_token`);
-}
 
 let _client: FeedbackClient | null = null;
 export function getFeedbackClient(): FeedbackClient {

web/src/lib/platform-api.ts

@@ -2,11 +2,7 @@
 
 import { createPlatformClient, type PlatformClient } from "@bytelyst/platform-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
-
+import { getAccessToken } from "@/lib/api-helpers";
-function getAccessToken(): string | null {
-  if (typeof window === "undefined") return null;
-  return localStorage.getItem(`${PRODUCT_ID}_access_token`);
-}
 
 let _client: PlatformClient | null = null;
 function getClient(): PlatformClient {

web/src/lib/platform.ts

@@ -2,13 +2,11 @@
 
 import { createPlatformClient } from "@bytelyst/platform-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
+import { getAccessToken } from "@/lib/api-helpers";
 
 export const platformClient = createPlatformClient({
   baseUrl: PLATFORM_SERVICE_URL,
   productId: PRODUCT_ID,
-  getAccessToken: () => {
+  getAccessToken,
-    if (typeof window === "undefined") return null;
-    return localStorage.getItem(`${PRODUCT_ID}_access_token`);
-  },
   refreshAccessToken: async () => false,
 });

web/src/lib/prompt-client.ts

@@ -1,6 +1,6 @@
 "use client";
 
-import { createNotesApiClient } from "@/lib/api-helpers";
+import { createNotesApiClient, getAccessToken } from "@/lib/api-helpers";
 import type {
   PromptTemplate,
   RunPromptInput,
@@ -57,7 +57,7 @@ export async function runPromptStream(
 ): Promise<void> {
   const api = createNotesApiClient();
   const baseUrl = (api as unknown as { baseUrl?: string }).baseUrl ?? "";
-  const token = typeof window !== "undefined" ? localStorage.getItem("access_token") : null;
+  const token = getAccessToken();
   const headers: Record<string, string> = { "Content-Type": "application/json" };
   if (token) headers["Authorization"] = `Bearer ${token}`;
 

web/src/lib/survey-client.ts

@@ -2,11 +2,7 @@
 
 import { createSurveyClient, type SurveyClient } from "@bytelyst/survey-client";
 import { PLATFORM_SERVICE_URL, PRODUCT_ID } from "@/lib/product-config";
-
+import { getAccessToken } from "@/lib/api-helpers";
-function getAccessToken(): string {
-  if (typeof window === "undefined") return "";
-  return localStorage.getItem(`${PRODUCT_ID}_access_token`) ?? "";
-}
 
 let _client: SurveyClient | null = null;
 export function getSurveyClient(): SurveyClient {
@@ -14,7 +10,7 @@ export function getSurveyClient(): SurveyClient {
     _client = createSurveyClient({
       baseUrl: PLATFORM_SERVICE_URL,
       productId: PRODUCT_ID,
-      getAuthToken: getAccessToken,
+      getAuthToken: () => getAccessToken() ?? "",
       platform: "web",
       appVersion: "0.1.0",
       osVersion: typeof navigator !== "undefined" ? navigator.userAgent.slice(0, 40) : "unknown",