Skip Sentry capture when token refresh fails with 401

When a token refresh fails with UnauthorizedError (401), this is an
expected re-authentication flow — the refresh token is expired, revoked,
or lacks required OAuth scopes. The app correctly logs out the user,
but was also capturing this to Sentry, generating thousands of noise
events (2.6k spike on April 19 after a scope change).

Mirror the pattern already used in fetchCreatorStatus: console.warn
for UnauthorizedError, Sentry.captureException only for unexpected
errors.

Fixes GUMROAD-MOBILE-2D

Author: claude

lib/request.ts

@@ -100,7 +100,11 @@ export const useAPIRequest = <TResponse, TData = TResponse>(
           newAccessToken = await refreshToken();
         } catch (refreshError) {
           if (refreshError instanceof KeychainUnavailableError) throw error;
-          Sentry.captureException(refreshError, { tags: { auth_path: "refresh_failed" } });
+          if (refreshError instanceof UnauthorizedError) {
+            console.warn(refreshError);
+          } else {
+            Sentry.captureException(refreshError, { tags: { auth_path: "refresh_failed" } });
+          }
           await logout();
           throw error;
         }

tests/lib/use-api-request.test.tsx

@@ -116,6 +116,18 @@ describe("useAPIRequest", () => {
     expect(Sentry.captureException).not.toHaveBeenCalled();
   });
 
+  it("logs out without reporting to Sentry when refresh fails with UnauthorizedError", async () => {
+    mockFetch.mockResolvedValueOnce(jsonResponse({}, 401));
+    mockRefreshToken.mockRejectedValueOnce(new UnauthorizedError("Unauthorized"));
+
+    const { result } = renderUseAPIRequest();
+
+    await waitFor(() => expect(result.current.isError).toBe(true));
+    expect(mockLogout).toHaveBeenCalledTimes(1);
+    expect(Sentry.captureException).not.toHaveBeenCalled();
+    expect(result.current.error).toBeInstanceOf(UnauthorizedError);
+  });
+
   it("logs out when refresh fails with a raw keychain error (write-side after server rotation)", async () => {
     mockFetch.mockResolvedValueOnce(jsonResponse({}, 401));
     const writeError = new Error("User interaction is not allowed");