Repair nucleus-aware Python identifier generation across a frozen particle-physics library's utility and…

Repair nucleus-aware Python identifier generation across a frozen particle-physics library's utility and…: a task in MiMo-V2.6-RL-harbor-terminal: MiMo-V2.6-RL Terminal (Harbor) (Harbor dataset). The vendored Scikit-HEP particle source under /app/vendor/particle has a semantic regression in its…