feat(plc): dynamic PLC testing via ephemeral soft-PLC (#193)

.env.example

@@ -34,6 +34,19 @@ SCAN_SCHEDULE=0 0 */6 * * *
 CVE_MONITOR_SCHEDULE=0 0 0 * * *
 GIT_CLONE_BASE_PATH=/tmp/compliance-scanner/repos
 
+# Dynamic PLC testing — ephemeral soft-PLC provisioning (#183). Off unless
+# enabled; requires the agent container to have Docker access (socket mount).
+# When on, a PLC/SPS target with control logic but no reachable device gets its
+# logic instantiated on a throwaway OpenPLC, probed, then torn down.
+PLC_RUNTIME_ENABLED=0
+PLC_RUNTIME_IMAGE=registry.meghsakha.com/openplc:latest
+PLC_RUNTIME_NETWORK=certifai
+PLC_RUNTIME_MEMORY=512m
+PLC_RUNTIME_CPUS=0.5
+PLC_RUNTIME_MAX_LIFETIME_SECS=180
+PLC_RUNTIME_OPENPLC_USER=openplc
+PLC_RUNTIME_OPENPLC_PASSWORD=openplc
+
 # Dashboard
 DASHBOARD_PORT=8080
 AGENT_API_URL=http://localhost:3001