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

compliance-core/src/config.rs

@@ -49,6 +49,57 @@ pub struct AgentConfig {
     /// of tenants to iterate. When `None` or unreachable, scheduler
     /// falls back to `SCHEDULER_TENANT_IDS` env (M7.2-C).
     pub tenant_registry_url: Option<String>,
+    /// Ephemeral soft-PLC provisioning for dynamic PLC testing (#183). Off by
+    /// default: it needs Docker access in the agent's runtime, which is a
+    /// deployment opt-in.
+    pub plc_runtime: PlcRuntimeConfig,
+}
+
+/// Configuration for the ephemeral soft-PLC "provision-and-test" path (#183).
+///
+/// When a PLC/SPS target ships control logic but no reachable live device, the
+/// agent can instantiate that logic itself: spin up a throwaway soft-PLC
+/// (OpenPLC) container in-cluster, load the program, start the runtime, probe it
+/// over industrial protocols, then tear it down. This struct carries the knobs
+/// for that container's lifecycle and the OpenPLC web-UI credentials used to
+/// upload the program.
+#[derive(Clone, Debug)]
+pub struct PlcRuntimeConfig {
+    /// Master switch. Provision-and-test does nothing unless this is set — it
+    /// shells out to `docker`, which requires the agent container to have Docker
+    /// access (socket mount), an explicit deployment decision.
+    pub enabled: bool,
+    /// Container image for the ephemeral soft-PLC (OpenPLC).
+    pub image: String,
+    /// Docker network the instance joins. Must be the agent's own network so it
+    /// is reachable in-cluster by container name and never published to the host.
+    pub network: String,
+    /// Memory cap passed to `docker run --memory` (e.g. `512m`).
+    pub memory: String,
+    /// CPU cap passed to `docker run --cpus` (e.g. `0.5`).
+    pub cpus: String,
+    /// Hard ceiling on a provisioned instance's lifetime. Teardown is guaranteed
+    /// no later than this even if a load/probe step hangs.
+    pub max_lifetime_secs: u64,
+    /// OpenPLC web-UI username for the program upload (image default `openplc`).
+    pub openplc_user: String,
+    /// OpenPLC web-UI password (image default `openplc`).
+    pub openplc_password: SecretString,
+}
+
+impl Default for PlcRuntimeConfig {
+    fn default() -> Self {
+        Self {
+            enabled: false,
+            image: "registry.meghsakha.com/openplc:latest".to_string(),
+            network: "certifai".to_string(),
+            memory: "512m".to_string(),
+            cpus: "0.5".to_string(),
+            max_lifetime_secs: 180,
+            openplc_user: "openplc".to_string(),
+            openplc_password: SecretString::from("openplc".to_string()),
+        }
+    }
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]