Old workflows (saved before the control_after_generate feature) carry a
shorter widgets_values array. The frontend's index-based widget restore
then shifts the old weight_dtype value into the hidden control widget
(leaving an invalid value like 'default') and silently resets
weight_dtype to its default. On graph load, hand the shifted value back
to weight_dtype when it still sits at its default, then reset the
control mode to 'fixed' so old workflows keep loading deterministically.
The Checkpoint/Unet Loader (LoraManager) nodes now support ComfyUI's
built-in control_after_generate mechanism on the ckpt_name/unet_name combos,
letting users pick a random model on every queue with the selected model
written back into the widget (visible, and lockable via the 'fixed' mode).
A base_model input narrows the random pool: a front-end extension fetches
the name/base_model mapping from the new /api/lm/checkpoints/loader-pool
endpoint and filters the combo options, wired through the node callback,
the refreshComboInNodes extension hook, and a graph.onConfigure hook
installed from onAdded (onNodeCreated fires before the node is attached to
a graph, so the graph reference is unavailable there).
Will Miao