Summary

• Export AutoPopulate and Job from datajoint top-level package
• Enables ecosystem packages (e.g. job workers) to use dj.AutoPopulate for isinstance checks and dj.Job for FreeTable progress queries without depending on internal module paths

Motivation: a downstream job-worker package imports from datajoint.autopopulate import AutoPopulate and from datajoint.jobs import Job -- both non-public paths. These are stable, useful abstractions that belong in the public API:

• AutoPopulate is the common base for Computed/Imported, defining the .populate()/.make()/.jobs contract
• Job is needed to get job progress from FreeTable instances (which lack the .jobs descriptor)

Test plan

• python -c "import datajoint as dj; print(dj.AutoPopulate, dj.Job)" works
• All pre-commit hooks pass (ruff, mypy, codespell)
• Existing test suite passes (no behavior change, additive only)