PR #330 fixed the pip bootstrap (ensurepip error-swallowing in setup.sh). With that fix working, the Verify step in windows-test.yml now fails at 'drone: command not found' (exit 127). Root cause: each CI step spawns a fresh shell, so the venv activation from setup.sh doesn't carry to Verify. drone lives at .venv/Scripts/drone.exe which isn't on the default PATH.
Fix: prepend 'source .venv/Scripts/activate' to the Verify step so drone is findable.
Stacked on PR #330 conceptually — both fixes needed for windows-test.yml to actually pass.
Co-Authored-By: @devpulse <devpulse@aipass>