[simone-chen]

• Pass native SiTU parameters through the callable MoE factory; retain the existing labeled approximation for older factories.
• Reject declared W4A16 measurements when the selected runtime quantizes activations. Keep the early CT CUTLASS W4A4 guard and inspect both activation descriptors after weight loading on vLLM 0.31.0. GPT-OSS selecting MXFP8 remains an explicit precision gap.
• Reject the actual selected TrtLlmBf16ExpertsMonolithic leaf on vLLM 0.31.0 when the model requires input routing weights. B200 Llama4 diagnostics show that this native path instead weights expert outputs. Raise before timing without forcing a backend, changing model flags, or dropping queued cases.
• Preserve output-weighted models, other selected leaf types, older runtime surfaces, existing case identities, and timing methods. Unknown target-runtime precision descriptors remain errors.
• Validation: 104 CPU getter/case-plan/import/activation/precision/routing guard tests passed; Ruff, format, and diff checks passed. The new routing guard compares the native class object, including a test against an unrelated class with the same name.
• Native implementation repair and numerical requalification remain required for the blocked path. No GPU jobs were submitted for this change. Full CI is requested for exact head d67e3ce06fc27c1e7cb6c308c9ee5f2f103fc501; GitHub verifies its GPG signature and DCO sign-off is present.
• CI fixture repair: the shared getter test fake omitted the newly imported BF16 expert module, causing 23 distinct tests to fail across eight unit shards. Add the two strict fake module paths; the pre-fix failure was reproduced locally and all affected suites now pass. Runtime code and campaign source are unchanged by this test-only repair.

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[simone-chen]

/ok to test e4740a6

[simone-chen]

/ok to test 843e3e2

[simone-chen]

/ok to test ed5d501

[simone-chen]

/ok to test d67e3ce

[simone-chen]

Superseded by consolidated recurrent/MoE compatibility PR #605, stacked on attention #604. The MoE cleanup is preserved once, including the duplicate in #603. Communication remains #591. Original branches and campaign commit references are preserved; closing without merging.