feat: add lucy-vton-3.6 (realtime + batch) at 720p

[tomershlasky]

Description

Registers lucy-vton-3.6 on the realtime and video surfaces. Mirrors DecartAI/sdk#217 — the JS SDK registry is the source of truth this package's tests are written against. The model is already served in production; this only makes it reachable through the typed SDK surface.

1. lucy-vton-latest still resolves to lucy-vton-3.5. 3.6 is opt-in by explicit name; the alias comments are untouched.
2. 3.6 is not offered on the fast tier, so the entry omits the speed capability and the fast-mode prose is unchanged.
3. lucy-vton-3.5 is unchanged — purely additive.

1280x720 on both surfaces, fps 30 realtime / 20 video, matching what the API serves and confirmed against the deployed model rather than copied from a sibling.

Usage

from decart import DecartClient, models

client = DecartClient(api_key="...")

model = models.realtime("lucy-vton-3.6")

job = await client.queue.submit_and_poll(
    model=models.video("lucy-vton-3.6"),
    prompt="Wearing the garment from the reference image",
    reference_image=garment_file,
    data=video_file,
)

Changes

File	Change
decart/models.py	RealTimeModels + VideoModels Literals; _MODELS["realtime"] and _MODELS["video"] entries
tests/test_models.py	canonical realtime/video coverage, asserting supported_speeds == () on 3.6
playground/playground.py	REALTIME_MODELS

Why the speed capability is omitted

supportedSpeeds is a claim that the service will serve the model on that tier and price it accordingly — an unsupported tier is rejected at connect time, not silently ignored. 3.6 is not offered on it, so the capability is left off here and the fast-model pin in the tests is deliberately unchanged.

Verification

Command	Result
uv run --all-extras pytest	132 passed
uv run --all-extras pytest tests/test_models.py	15 passed
uv run ruff check .	All checks passed
uv run ruff format --check (changed files)	3 files already formatted
uv run --all-extras mypy decart	no new errors

ruff format flags tests/test_queue.py and mypy reports 37 errors in 7 files — both reproduce identically on a clean main and are untouched here.

Compatibility

Source-compatible and additive. No existing model id, alias, geometry or capability changes.

---

Note

Low Risk
Additive model registry and tests only; no changes to aliases, existing models, or runtime logic beyond exposing a new model id.

Overview
Registers lucy-vton-3.6 on the typed SDK for realtime (/v1/stream, 30 fps, 1280×720) and batch video (/v1/jobs/lucy-vton-3.6, 20 fps, same resolution, VideoEdit2Input). This is additive only: lucy-vton-3.5 and lucy-vton-latest behavior are unchanged.

Unlike 3.5, the realtime entry does not advertise supported_speeds, so fast tier is not claimed for 3.6; tests assert supported_speeds == (). The playground realtime model list includes 3.6 for manual testing.

^{Reviewed by Cursor Bugbot for commit 815dc67. Bugbot is set up for automated code reviews on this repo. Configure here.}

[AdirAmsalem]

no need to mention it then?

[tomershlasky]

Agreed, dropped. The absent field is the statement.

Same removal applied in the JS, Swift, Kotlin and C++ PRs so the five registries stay identical — DecartAI/sdk#217 also lost the alias parentheticals from its JSDoc lists for the same reason.