Update a project generated by python-package-copier from the latest template version while preserving local customizations (README, docs, CI workflows, dependencies, source code). Use when working inside a generated repo and the user wants to pull in template improvements, sync with upstream template changes, or apply template updates. Handles intelligent 3-tier conflict resolution using copier update with .rej files. Triggers on requests like "update from template", "sync template", "pull template changes", "upgrade template", or "apply template updates".
2026-07-25