Cleanup: duplicate divergent mock_esp32.py (root vs docker/)

[Alimedhat000]

Summary

mock_esp32.py exists in two places with divergent content:

• mock_esp32.py (repo root, ~443 lines)
• docker/mock_esp32.py (~401 lines)

They are different files (different hashes/line counts). Only the docker/ copy is actually used — docker/Dockerfile.mock_esp32 does COPY mock_esp32.py . with build context docker/ (see docker/docker-compose.test.yml). The root copy is an orphan.

Impact

Two copies can silently drift; someone editing the "wrong" one will think they changed the mock device. Root copy is dead weight.

Suggested fix

Pick one location and remove the other:

• Recommended: keep docker/mock_esp32.py (it's the built artifact), delete root mock_esp32.py.
• If the root file is used by any tooling outside the compose files, check first (rg -l mock_esp32 across the repo) and reconcile the two versions before deleting.

Verification

docker compose -f docker/docker-compose.test.yml up --build mock_esp32 still works after the move.