[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.py

@@ -31,7 +31,7 @@ from fastvideo.api import (
     EngineConfig,
     GenerationRequest,
     GeneratorConfig,
-    MiniMaxH3Config,
+    MiniMaxH3Options,
     OffloadConfig,
     OutputConfig,
     ParallelismConfig,
@@ -263,7 +263,7 @@ def build_generator_config(args: argparse.Namespace) -> GeneratorConfig:
                 lora_path=getattr(args, "lora_path", None),
                 lora_strength=float(getattr(args, "lora_strength", 1.0)),
             ),
-            minimax_h3=MiniMaxH3Config(
+            minimax_h3=MiniMaxH3Options(
                 sequential_load=args.h3_sequential_load,
                 video_decode_backend=None if args.video_decode_backend == "h3-vae" else args.video_decode_backend,
                 taeh3_checkpoint=args.taeh3_checkpoint,