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Production Readiness Audit Report (archived)

Status (2026-05-23): This document was a point-in-time audit from early development (January 19, 2026, captured against the v1.0.2 baseline). The body referenced modules and APIs that have since been removed or replaced:

  • The "ui.py — 53% coverage" line refers to the Gradio-era module that was migrated to backpropagate/ui_app/ (Reflex / Radix UI) in v1.1.0 and removed in v1.2.0.
  • The "4 failing SLAO tests" were fixed in subsequent waves; tests/test_slao.py currently runs clean.
  • The "Add Dockerfile" recommendation shipped in v1.1.x (see Dockerfile).
  • The 1,796-test count is superseded by pytest --collect-only (1865 tests on main as of 2026-05-23 post-Wave-6 / -7 / -8).
  • The Gradio-session-management recommendation no longer applies — auth is now an ASGI middleware (Starlette) gating both HTTP and WebSocket surfaces, with HMAC-signed backprop_sess cookies and a 12h TTL. See handbook/security.md for the current model.
  • The [observability] / Prometheus recommendation: the extra was removed in v1.2.0 (zero modules imported opentelemetry); a real OpenTelemetry integration is a v1.3+ candidate.

Retained as a historical artifact only.

The current production-readiness posture is captured in:

  • SHIP_GATE.md — Ship Gate scorecard (categories A–D, hard gates A–D).
  • CHANGELOG.md — version-by-version delta with "Known issues / tech debt" sections per release.
  • handbook/security.md — operator-facing security model.
  • docs/ci-gates-triage-plan.md — the "baseline → fix → suppress with justification → enforce" doctrine that landed in v1.2.0's gate re-tightening.

What used to live here (summary)

The original report scored Backpropagate 7.5 / 10 against a curated 2026-best-practices checklist (configuration management, MLOps, monitoring, containerization, error handling, security). Strong areas were Pydantic-driven configuration, the exception hierarchy, modular extras, and cross-platform support. Gap areas identified were:

  • UI test coverage (since reworked under ui_app/)
  • Multi-run test coverage (since reinforced in Wave 3 / Wave 6 of the v1.2.0 swarm — see CHANGELOG)
  • Structured logging (since shipped as part of v1.1.x — BACKPROPAGATE_LOG_JSON)
  • Dockerfile (since shipped — pinned 3.11-slim, multi-stage)
  • Session management for the web UI (since replaced by real ASGI auth middleware with HMAC-signed cookies)

The "before v1.0" remediation checklist at the bottom of the original report is fully resolved; the "production deployments" + "enterprise use" lists are partially shipped, partially deferred to v1.3 brief.

If you need the verbatim original audit text it is preserved in the git history at the v1.0.2 tag.