merge: testing → main (reconcile 2-week divergence)

tests/mysql_spinup.sh

@@ -0,0 +1,20 @@
+# start the instance
+docker run -d --rm --name decnet-mysql \
+    -e MYSQL_ROOT_PASSWORD=root \
+    -e MYSQL_DATABASE=decnet \
+    -e MYSQL_USER=decnet \
+    -e MYSQL_PASSWORD=decnet \
+    -p 3307:3306 mysql:8
+
+until docker exec decnet-mysql mysqladmin ping -h127.0.0.1 -uroot -proot --silent; do
+    sleep 1
+done
+
+echo "MySQL up."
+
+export DECNET_DB_TYPE=mysql
+export DECNET_DB_URL='mysql+asyncmy://root:root@127.0.0.1:3307/decnet'
+
+source .venv/bin/activate
+
+sudo .venv/bin/decnet api