skills

docs(index): reflect Nemotron Speech in Conversational AI row

fix(regenerate-readme): honor links.discussions/security set to false

chore: sync skills (Model-Optimizer,NeMo Gym,NeMo-Gym,Nemotron Voice Agent,TensorRT-LLM,TileGym,Video Search and Summarization,nemotron-voice-agent,tilegym-converting-cutile-to-julia,tilegym-converting-cutile-to-triton,tilegym-cutile-autotuning,tilegym-cutile-python,tilegym-improve-cutile-kernel-perf,tilegym-monkey-patch-kernels-to-transformers)

chore(vss): complete the flat-layout migration

chore: sync skills (Model-Optimizer,NeMo Gym,NeMo-Gym,Nemotron Speech,Nemotron Voice Agent,TensorRT-LLM,TileGym,Video Search and Summarization,nemotron-voice-agent,tilegym-converting-cutile-to-julia,tilegym-converting-cutile-to-triton,tilegym-cutile-autotuning,tilegym-cutile-python,tilegym-improve-cutile-kernel-perf,tilegym-monkey-patch-kernels-to-transformers,video-search-and-summarization)