- Exposed 'seed' parameter in VoxCPMModel and VoxCPM2Model generation methods.
- Added PyTorch RNG seed setting before inference runs.
- Handled 'retry_badcase' seed adjustment by incrementing the seed value on retries.
- Exposed 'self.last_successful_seed' as a model attribute for UI integrations.
- Propagated 'seed' parameter to high-level pipeline class and CLI tools (cli.py).
- Added '--seed' flag to full-finetune and LoRA inference scripts.
- Configured validation audio generation in training script to use a fixed seed for objective comparison on TensorBoard.
- Added comprehensive unit tests in CLI test files to validate seed parsing and propagation.
- Updated English and Chinese READMEs with seed usage examples.
Drop "half" from _VALID_DTYPE_OVERRIDES / _LOW_PRECISION_DTYPES.
get_dtype() has never accepted "half", so VOXCPM_MPS_DTYPE=half would
pass override validation and then crash downstream with
"Unsupported dtype: half". The remaining aliases (bfloat16/bf16,
float16/fp16, float32/fp32) already cover the intended dtype space.
Adds a standalone unit check under scripts/ to guard the invariant
that every accepted override parses through get_dtype().
Addresses review feedback on #263.
