Ran a dedicated post-M7 release-readiness audit. Found and fixed the one real gap: mypy
was a declared dev dependency but had never been run in any milestone's validation loop.
Fixed all 43 pre-existing type errors it surfaced, including two genuine defensive-
programming gaps (unguarded Optional vehicle/customer lookups that could have crashed
with unhandled 500s instead of clean 404/401 responses) rather than suppressing them.
make lint now runs ruff + mypy; mypy reports zero errors across 44 source files.
Re-verified end to end against a genuinely wiped-volumes clean checkout: automatic
migrations, deterministic seed, 66/66 backend tests, and the full user-journey matrix
(login, dashboard, vehicle/booking detail, return workflow, invalid-mileage rejection,
data-quality review, duplicate-customer merge, audit trail, Knowledge Assistant, n8n,
MCP Hub) via curl and Playwright.
Live-verified both external-dependency degraded modes, not just unit tests: stopped n8n
mid-flow and confirmed a return still commits with the outbox event staying pending and
retrying with backoff, then self-healing to succeeded with zero manual intervention once
n8n came back; verified RAGcore's unavailable-degradation path against an unreachable
host. Added frontend/e2e/interactive-elements.spec.ts (11 tests covering every nav item,
filter, tab, and role boundary) alongside the existing demo script test — 12/12 e2e tests
passing.
Verified no secrets are committed (.env never tracked, clean git history scan) and
.env.example covers every operator-configurable setting. Confirmed no placeholders,
TODOs, fake responses, hardcoded metrics, or dead routes anywhere in the codebase.
Updated README.md with an honest integration-status section and PROJECT_STATE.md with
the full audit findings. Added artifacts/final-acceptance/summary.md as the authoritative
final evidence document (commands, results, URLs, demo access, integration status per
external dependency, known limitations, deployment instructions, five-minute demo flow).
Automated migrations on container startup (backend/entrypoint.sh), scripted n8n workflow activation (make n8n-setup), Playwright E2E test covering the full 9-step demo script (verified passing against the live stack, including the previously-unverified 360px responsive layout), evidence screenshots of all main pages, architecture diagram, and artifacts/evidence/final-summary.md with commit/commands/test counts/RAGcore and n8n evidence/MCP sample calls/known limitations/portfolio wording. Verified the complete clean-checkout path from a genuinely wiped-volumes state: automatic migrations, seed, 66 backend tests passing, and a live S1 return round-tripped through a freshly-activated n8n instance. Added .gitattributes to force LF line endings on shell scripts, preventing a real cross-platform breakage of entrypoint.sh's shebang.
Four read-only, service-token-protected MCP provider endpoints (operations summary, attention vehicles, vehicle details, knowledge search facade). Shared-secret auth reusing the M4 callback pattern. Service-request audit trail for every call. Extracted shared operations-summary logic out of the dashboard router to avoid duplicating retrieval logic. 66 backend tests passing, ruff clean. Verified all four endpoints and audit trail directly via curl against the live stack (no live MCP Hub instance available in this environment).
KnowledgeProvider protocol with a deterministic TF-IDF-weighted extractive demo provider (never generative, always cites real excerpts) and a RAGcore HTTP adapter that degrades cleanly to unavailable. Knowledge nav + chat-style Q&A UI with source cards and honest grounded/insufficient/unavailable states. 57 backend tests passing, ruff clean. Fixed a real relevance bug (generic terms like "vehicle" crowding out distinctive matches) via IDF weighting, found by testing the actual S6 scenario. Verified end-to-end in the browser: grounded damage question cites both expected procedures; unrelated question honestly returns insufficient evidence with no fabrication.
Outbox dispatcher (background thread, FOR UPDATE SKIP LOCKED claim, exponential backoff, no transaction held during HTTP I/O). n8n callback endpoint with shared-secret auth and idempotency by event ID. Automation nav + UI with manual retry. 49 backend tests passing, ruff clean. Fixed a crash-on-redelivery bug in seeded outbox payloads and made the dispatcher defensive against malformed payloads. Verified the full live round trip against a real n8n instance: return -> outbox -> dispatcher -> n8n workflow -> callback -> succeeded, including the S5 failed-retry demo scenario.
Five rule scanners (duplicate customers, missing fields, odometer regression, booking overlap, status conflict) run automatically after seed and via an explicit scan endpoint. Issue defer/reject/merge-customers endpoints with transactional customer merge (booking rewiring, tombstone, audit). Data Quality nav + workbench UI with two-column duplicate comparison and inline (non-native) confirm. Dashboard attention items now link to issues. 35 backend tests passing, ruff clean. Fixed a real false-positive bug in odometer-regression detection found through iteration on seed data, and two TS narrowing errors. Verified end-to-end via browser: S2 merge and S4 overlap scenarios.
Transactional return command with idempotency, row-lock concurrency control, odometer-regression handling, vehicle status derivation, outbox event, audit trail. Result-summary UI on booking detail. 26 backend tests passing, ruff clean. Verified end-to-end via browser against S1 demo scenario; fixed two real defects found only through browser testing (UI state loss on status transition, unflushed UUID default).
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