fix: normalize workbench cloud authorization

internal/workbench/cloud-application.ts

@@ -6,13 +6,15 @@ export function createCloudWorkbenchApplication(options: {
   fetchImpl?: typeof fetch;
 }): WorkbenchApplication {
   if (!options.baseUrl) throw codedError("workbench_cloud_api_url_required", "WORKBENCH_CLOUD_API_URL is required");
-  if (!options.authorization) throw codedError("workbench_cloud_api_auth_required", "WORKBENCH_CLOUD_API_AUTHORIZATION is required");
+  const authorization = options.authorization.trim();
+  if (!authorization) throw codedError("workbench_cloud_api_auth_required", "WORKBENCH_CLOUD_API_AUTHORIZATION is required");
+  const authorizationHeader = /^Bearer\s+/iu.test(authorization) ? authorization : `Bearer ${authorization}`;
   const fetchImpl = options.fetchImpl ?? fetch;
   const request = async (method: string, route: string, body: Record<string, unknown> | undefined, actor: { id: string; role?: string | null }) => {
     const response = await fetchImpl(`${options.baseUrl.replace(/\/$/u, "")}${route}`, {
       method,
       headers: {
-        authorization: options.authorization,
+        authorization: authorizationHeader,
         "content-type": "application/json",
         "x-workbench-activity-dispatch": "1",
         "x-hwlab-actor-id": actor.id,

internal/workbench/workbench.test.ts

@@ -54,10 +54,24 @@ describe("Workbench Cloud application adapter", () => {
     await application.admitTurn(input);
     await application.dispatchTurn(input);
     expect(calls).toEqual([
-      { path: "/v1/internal/workbench/admit", authorization: "unified-internal-key" },
-      { path: "/v1/agent/chat", authorization: "unified-internal-key" }
+      { path: "/v1/internal/workbench/admit", authorization: "Bearer unified-internal-key" },
+      { path: "/v1/agent/chat", authorization: "Bearer unified-internal-key" }
     ]);
   });
+
+  test("preserves an existing Bearer authorization scheme", async () => {
+    let authorization: string | null = null;
+    const application = createCloudWorkbenchApplication({
+      baseUrl: "http://cloud.internal",
+      authorization: "Bearer unified-internal-key",
+      fetchImpl: (async (_url: string | URL | Request, init?: RequestInit) => {
+        authorization = new Headers(init?.headers).get("authorization");
+        return Response.json({ ok: true, session: { sessionId: "ses_test" } });
+      }) as typeof fetch
+    });
+    await application.createSession({ actor: { id: "usr_test" }, params: {} });
+    expect(authorization).toBe("Bearer unified-internal-key");
+  });
 });
 
 describe("Workbench native HTTP adapter", () => {