* [docs]: add reproducible Kimi K2.5 PyPI LoRA tutorial
* [docs]: highlight Kimi K2.5 and K2.6 LoRA support
* Update README to simplify LoRA fine-tuning entry
* Add updates section to README.md
* [docs]: clarify clean Kimi setup and held-out evaluation
* [docs]: explain pinned model downloads on offline training hosts
* [docs]: isolate Kimi caches in the tutorial work directory
* [docs]: simplify Kimi LoRA installation and training tutorial
* ci(release): prepare source builds from four main snapshots
* docs(release): add verified Kimi RAWINT4 LoRA smoke configs
* ci(release): gate four-main PyPI promotion on immutable wheels and model E2E