dev-build.sh now builds the whole solution and runs .NET + Jest unit
tests instead of restarting docker-compose services. readme documents
the aspire run command for local orchestration; slnx solution-items
reference to the removed docker-compose.yml is gone.
Merge dotnet+jest coverage via reportgenerator, publish a self-hosted
coverage badge and build-status badges on the readme. Gitea remains the
full pipeline (build/test/docker push/deploy-qa/smoke); GitHub only
builds and tests since it has no registry secrets or qa runner.
Reviewed-on: #5
