Upgrading to dbt-core 1.8 breaks adapter installation
dbt-core 1.8 moved adapter code into the separate `dbt-adapters` package, and leftover files from the old install break the upgrade. Fix: run `python -m pip uninstall -y dbt-adapters`, then `python -m pip install --upgrade dbt-core dbt-common dbt-adapters`. If you want one command, `python -m pip in…