fix(downloads): route unknown checkpoint baseModels to diffusion models by default

CivitAI labels new DiT architectures (MiniMax H3, future Flux/Wan/Qwen
variants) as model.type "Checkpoint" with plain "Model" file entries,
so the DIFFUSION_MODEL_BASE_MODELS allowlist could never keep up and
such downloads were mis-routed to the checkpoint roots (e.g. model
2877206 / version 3374439). The set of true full-checkpoint families is
closed, so the baseModel fallback is inverted:

1. file type UNet/Diffusion Model -> unet (unchanged)
2. baseModel in DIFFUSION_MODEL_BASE_MODELS (now incl. MiniMax H3) -> unet
3. baseModel in new CHECKPOINT_BASE_MODELS (SD 1.x/2.x/3.x, SDXL, Pony,
   Illustrious, NoobAI) -> checkpoint
4. unknown/empty baseModel -> new unknown_base_model_routing setting,
   defaulting to diffusion models

The setting is exposed under Settings > Downloads, validated in
SettingsManager, and threaded into both the download manager and the
download routing endpoint so they keep agreeing.
This commit is contained in:
Will Miao
2026-10-02 09:58:01 +08:00
parent 2193ec8f38
commit 3aa32120df
22 changed files with 270 additions and 8 deletions
@@ -146,6 +146,10 @@
</div>
</div>
</div>
{{ sm.setting_select('unknownBaseModelRouting', 'unknown_base_model_routing', 'settings.unknownBaseModelRouting.label', [
('diffusion_model', 'settings.unknownBaseModelRouting.options.diffusionModel'),
('checkpoint', 'settings.unknownBaseModelRouting.options.checkpoint'),
], 'settings.unknownBaseModelRouting.help') }}
</div>
<!-- AI Provider Configuration (BYOK) -->