The Travis CI wrapper should prepare repository state reliably before delegating to commitlint.

The Travis CI wrapper should prepare repository state reliably before delegating to commitlint.: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). The wrapper temporarily stashes a dirty worktree while it performs setup and linting. That stash must be restored on…