Begin mesh-delivery with its README and its own check (ADR 0428)

README.md

@@ -0,0 +1,5 @@
+# mesh-delivery
+
+Novox Mesh — delivery: the parts that build, check and deliver a change by watching and writing keys on the bus (ADR 0429).
+
+Made by the mesh from the gitea module's config value `repositories` (novox/hq ADR 0428). Main takes no push: a change reaches it by a pull request whose `mesh/repo-check` (this repository's `merge-check.sh`) and `mesh/merge-gate` passed.

merge-check.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+# mesh-check-toolchain: go
+#
+# This repository's own check, mesh/repo-check (novox/hq ADR 0238 §4), written with its first commit (ADR 0428 §4):
+# every Go module in the tree is vetted, its unit tests run, and then its integration tests (-tags integration).
+# A tree with no Go module has nothing to test, and the check says so and passes.
+set -eu
+cd "$(dirname "$0")"
+
+modules=$(find . -name go.mod -not -path '*/vendor/*' -not -path './.git/*' | sort)
+if [ -z "$modules" ]; then
+  echo "This tree holds no Go module, so there are no tests to run; the check passes."
+  exit 0
+fi
+for mod in $modules; do
+  dir=$(dirname "$mod")
+  echo "== $dir: go vet and the unit tests"
+  (cd "$dir" && go vet ./... && go test ./...)
+  echo "== $dir: the integration tests (-tags integration)"
+  (cd "$dir" && go vet -tags integration ./... && go test -tags integration ./...)
+done