Found broken `/help` link. Please fix!

I cannot access the Cloud GPU generator. All URLs under app.comflowy.com put me into tutorial/playground mode without GPU. I cannot see “Start GPU Device” anywhere. Please enable the Cloud GPU environment for my account.

The issue reports a broken '/help' link and missing Cloud GPU access in the app. First, locate the routing or help page files (likely in a frontend directory). Check where the '/help' link is defined and verify its target. For the GPU issue, examine the user account or feature flag logic to see if GPU access is correctly enabled. Testing changes will require running the app locally to confirm the links work and the GPU option appears.

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