FIX-to-gRPC article — verification notes

The article describes the actual local fix-app implementation inspected on 2026-10-18.
Existing Phase 7 JUnit XML reports record 159 cases: 14 simulator, 74 gateway,
71 OMS; zero failures, errors or skips. Those results were reused, not rerun
for the article or its website adaptation. No performance measurements are claimed.

Existing coverage includes:
- FixGrpcEndToEndTest: real loopback FIX/gRPC and accepted/rejected reports.
- ExecutionReportSessionIntegrationTest: stored acceptance before deadline,
  original-session routing, disconnect/reconnect, and native FIX resend.
- FixBackpressureIntegrationTest: bounded queue admission and duplicates.
- OrderRepositoryTest and OrderGrpcIntegrationTest: normalized identity and conflicts.

The source links accompanying the seven code examples are exact snapshots from
that implementation. They are supplied with the article because the corresponding
local work had not been committed to the public repository at publication preparation.

Limits: process-local unbounded tracking maps, volatile queue/decisions/events,
no durable business recovery, no reconnect outbound drain, no reconciliation,
no application RPC retries, no fills, and no exactly-once delivery guarantee.