Code Review

This pull request refines the Dockerfile and installation scripts by updating package installations, including adding specific versions for numpy, vllm, transformer_engine, megatron_core, flash-attention, and flash-linear-attention. It also standardizes the use of Qwen3_5Template across numerous example and documentation files, replacing the generic Template, and updates model IDs in documentation. Review feedback points out a potential compatibility concern with the fixed numpy==2.2 version and suggests re-introducing a version constraint for the datasets package in pyproject.toml to prevent future breaking changes.