feat(models): add lucy-vton-3.5 (realtime + batch)

[AdirAmsalem]

Adds the lucy-vton-3.5 virtual try-on model so SDK users can select the latest VTON generation for both realtime streaming and batch video jobs. It's exposed everywhere the other canonical models are, so it's usable the same way with no new API surface to learn.

Usage

from decart import models

# Realtime streaming
rt = models.realtime("lucy-vton-3.5")

# Batch video job
video = models.video("lucy-vton-3.5")

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Note

Low Risk
Additive model registration with no changes to auth, billing, or existing model behavior; risk is mainly that backend endpoints must exist for the new paths.

Overview
Registers lucy-vton-3.5 as a first-class VTON model for realtime streaming and batch video jobs, mirroring lucy-vton-3 (same resolution and FPS; batch jobs use VideoEdit2Input and /v1/jobs/lucy-vton-3.5).

The name is added to RealTimeModels / VideoModels, the internal _MODELS registry, the playground REALTIME_MODELS picker, and model tests so models.realtime("lucy-vton-3.5") and models.video("lucy-vton-3.5") work like existing canonical models.

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