Remove order-command, trim -service suffix across the wiki
order-command-service was removed from the codebase but the wiki still
described it as a live REST/Kafka ingress. Deleted its dedicated page
and merged the still-accurate REST/Aeron intake content into
Order-Management-Service; updated every page, diagram, and table that
referenced it (nav sidebar, Home, Microservices-Overview,
Architecture-and-Order-Flow, Static-Data-Service, Design-Patterns,
Deployment-and-Operations, Trading-Terminology-Glossary,
Business-Logic-Order-Lifecycle, Testing-and-Verification) to reflect
that execution's SMART/VWAP child orders are now the only producer on
that Kafka path, and cancel-all is a direct REST call, not a Kafka
round trip.
Also drops the "-service" suffix from service names in prose/tables/
diagrams wiki-wide for readability, leaving real paths, Maven -pl
module names, and GitHub file links untouched. In the process, fixed
two Testing-and-Verification.md commands and a
Business-Logic-Portfolio-and-Risk-Management.md mention pointing at a
nonexistent "authorisation-service" module - the real directory is
"authentication".
Document the WAL crash recovery kill -9 verification