DB alembic HEAD is 1d78c0ca7853 (remove_voice_provider_deleted_column).
20260331 is the exact build where that revision is HEAD — alembic runs
clean with no migrations applied. Later builds (20260412/latest) introduce
migrations d8cdfee5df80–503883791c39 that break api_server startup.
Watchtower disabled on api_server and background to prevent future
auto-upgrades from breaking alembic compatibility.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>