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SwiGLU intermediateSize convention

Check R17. Runs in the editor as you build, in CI through the GitHub Action, and over the wire at POST /api/v1/check. Milliseconds, before any GPU is billed.

info performance R17
TriggerA swiGLU / gated FFN has intermediateSize that doesn't follow the common ~(2/3) × 4 × hidden convention used in LLaMA / Mistral.
WhyParam-count parity with standard FFN; mis-sized SwiGLU silently changes the FLOP and param budget.
SourceShazeer 2020, GLU Variants.

Why it is not a lint you can ignore

A structural mistake does not fail at review time and it does not fail at import time. It fails when the module is constructed on the training node, after the job was queued and the dataset was downloaded. That is why this runs before the spend and not after it.
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Every check

41 structural checks: 6 guardrail gates and 35 architecture advisor rules. See the full catalogue.

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