First bucket-B port toward 'support every fastvideo model': Wan2.1-T2V-14B reuses the Wan recipe +
torch adapter unchanged (same WanTransformer3DModel/AutoencoderKLWan/UMT5) — only a registry entry +
build_wan_t2v_14b_card (720p, flow_shift 5.0) + SamplingDefaults differ. Without the entry the arch
fallback would give it the 1.3B 480p defaults; the explicit entry gives 50 steps / 720x1280.
Also recorded the full backlog in V2_PORTING_STATUS.md: 63 fastvideo models = 8 ported / 21 bucket-B
(reuse Wan/Causal/LTX2 arch — registry+recipe+defaults, no new adapter) / 34 bucket-C (13 new
architectures needing a TorchComponent adapter). Updated the stale 'how to add a model' steps to the
post-redesign structure (v2/recipes/, torch_backend.py, SamplingDefaults). CPU mini 211 pass, 2 skip.
Will Lin
5f1d2ef7d2