[refactor]: name the model-family config partitions *Options

The schema class MiniMaxH3Config had the same name as the MiniMax-H3 DiT
config class in fastvideo/configs/models/dits/minimax_h3.py. The family
partitions of PipelineSelection are renamed LTX2Options, LTX2RefineOptions,
MiniMaxH3Options, and LongCatOptions, so their names cannot be confused with
the model and pipeline config classes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012M91wnVFmPEvJ9h39r5BH7

examples/inference/basic/basic_fasth3_simplified.py

@@ -23,7 +23,7 @@ from fastvideo.api import (  # noqa: E402
     EngineConfig,
     GenerationRequest,
     GeneratorConfig,
-    MiniMaxH3Config,
+    MiniMaxH3Options,
     OffloadConfig,
     OutputConfig,
     ParallelismConfig,
@@ -73,7 +73,7 @@ def main() -> None:
             model_path="MiniMaxAI/MiniMax-H3",
             pipeline=PipelineSelection(
                 components=ComponentConfig(lora_path=adapter_path, lora_strength=1.0),
-                minimax_h3=MiniMaxH3Config(vae_parallel_decode=True, vae_parallel_decode_strategy="gather"),
+                minimax_h3=MiniMaxH3Options(vae_parallel_decode=True, vae_parallel_decode_strategy="gather"),
             ),
             engine=EngineConfig(
                 num_gpus=4,