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teknium1
c055eee1fe
Follow-up to the cherry-picked fix from #112724 (@poijygfdyy): - tools/checkpoint_profile_migration.py -> tools/checkpoint_manager_profile_rename.py, the repo's `<stem>_<topic>.py` sibling convention for code that extends checkpoint_manager. - Replace the fail-closed target-collision check plus temp-file/rollback choreography with an idempotent rekey: every step overwrites and the old project metadata is removed last, so a mid-way failure is repaired by `hermes profile migrate-identity` redoing the same writes. A genuine collision cannot occur — `profiles/<new>` must not exist for the rename to run. 192 -> 98 lines. - Metadata/ledger writes go through the same idiom as checkpoint_manager itself (`_register_project` plain write, `_save_ledger`), dropping the private temp-file helpers. - Keep the git-present precondition as a single early check: without git the ref cannot move and rekeying only the metadata would orphan the history. - Test: `create_profile` now seeds `workspace/`, so the fixture uses `project/`; add the control assertion that a workdir outside the profile dir keeps its history unchanged. - Docs: the profile rename / migrate-identity reference notes that checkpoint history is preserved. Fixes #112973