The staging publish job built the web image without frontend/tests, and
next build type-checks every .ts under frontend/, so the harness importing
../tests/helpers/postgres-fixture.ts failed with TS2307. The harness depends
on the test fixture, so it now lives in frontend/tests/research; the Python
driver points there. A new test fails if src/ or scripts/ import tests/.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017eEAG8HD3mm8gsKXgk8uU8
