A fresh install had no generation settings until someone set one, so every
model ran on whatever its provider happened to use. Each harness now has a
default (text 0.3 temperature, vision 0.2, image the provider's own), shown
in the model settings modal so what a model runs on is never a guess.
The defaults are only sent to a model whose catalog lists the field, so a
provider that says nothing about its models still gets no parameter it
might reject; anything saved on a harness or bot wins over the default.
Each text and vision harness setting now carries the generation settings
its model takes (temperature, sampling limits, penalties, seed, reasoning
effort), edited in a modal under the model pick so the harness block stays
short. Nothing is set by default, so models keep their provider's own
values until a super admin or admin changes them.
A setting is only offered and only sent when the catalog says the model
takes it: OpenRouter's supported_parameters is now stored on
harness_models and refreshed by the hourly sync. Other providers list no
parameters, so their models get them all.
tben