refactor(core): dedupe shared config and runtime helpers

src/infra/runtime-status.ts

@@ -0,0 +1,28 @@
+type RuntimeStatusFormatInput = {
+  status?: string;
+  pid?: number;
+  state?: string;
+  details?: string[];
+};
+
+export function formatRuntimeStatusWithDetails({
+  status,
+  pid,
+  state,
+  details = [],
+}: RuntimeStatusFormatInput): string {
+  const runtimeStatus = status ?? "unknown";
+  const fullDetails: string[] = [];
+  if (pid) {
+    fullDetails.push(`pid ${pid}`);
+  }
+  if (state && state.toLowerCase() !== runtimeStatus) {
+    fullDetails.push(`state ${state}`);
+  }
+  for (const detail of details) {
+    if (detail) {
+      fullDetails.push(detail);
+    }
+  }
+  return fullDetails.length > 0 ? `${runtimeStatus} (${fullDetails.join(", ")})` : runtimeStatus;
+}