fix(pi-workflow): consume interrupted implementation recovery

extensions/pi-workflow/engine.test.ts

@@ -1611,6 +1611,11 @@ test("Recovery retry reruns failed verification after the remediation limit", as
     liveStolen.revision++;
     liveStolen.parentSessionIds.push("transient-session");
     liveStolen.verificationEvidence!.commands[0]!.error = "stale host exception";
+    const interruptedImplement = liveStolen.assignments.find(
+      (assignment) => assignment.role === "implement",
+    );
+    assert.ok(interruptedImplement);
+    interruptedImplement.status = "interrupted";
     liveStolen.lease = {
       processId: 200,
       activeParentSessionId: "transient-session",

extensions/pi-workflow/engine.ts

@@ -4348,16 +4348,17 @@ export class WorkflowEngine {
         next.status = "running";
       });
       if (run.implementationContext?.status === "ready") {
-        if (interruptedMutating.length > 0) {
+        if (
+          interruptedMutating.length > 0 &&
+          stage(run, "implement").status !== "completed"
+        ) {
           run = await this.transition(run, (next) => {
             const implement = stage(next, "implement");
-            if (implement.status !== "completed") {
-              implement.status = "completed";
-              implement.finishedAt = this.now();
-              implement.output = {
-                recovery: "User requested a new remediation Assignment after interruption",
-              };
-            }
+            implement.status = "completed";
+            implement.finishedAt = this.now();
+            implement.output = {
+              recovery: "User requested a new remediation Assignment after interruption",
+            };
           });
           return this.remediate(run);
         }