Implemented per-segment parameter overrides for seed and speed:
- Register CosyVoice in segment_parameters.py for seed and speed
- Apply segment.parameters using modular apply_segment_parameters()
- Extract segment_seed and segment_speed with fallback to node defaults
- Pass parameters through all generation paths (pause tags, chunking, direct)
- Add speed parameter to _generate_audio_segment() method
- Print parameter application message matching other engines
Supports inline tags like [Alice|seed:42|speed:1.5] with automatic
warnings for unsupported parameters via modular validation system.
diodiogod
a58c68d575