refactor: dedupe agent and browser cli helpers

src/test-utils/system-run-prepare-payload.ts

@@ -0,0 +1,27 @@
+type SystemRunPrepareInput = {
+  command?: unknown;
+  rawCommand?: unknown;
+  cwd?: unknown;
+  agentId?: unknown;
+  sessionKey?: unknown;
+};
+
+export function buildSystemRunPreparePayload(params: SystemRunPrepareInput) {
+  const argv = Array.isArray(params.command) ? params.command.map(String) : [];
+  const rawCommand =
+    typeof params.rawCommand === "string" && params.rawCommand.trim().length > 0
+      ? params.rawCommand
+      : null;
+  return {
+    payload: {
+      cmdText: rawCommand ?? argv.join(" "),
+      plan: {
+        argv,
+        cwd: typeof params.cwd === "string" ? params.cwd : null,
+        rawCommand,
+        agentId: typeof params.agentId === "string" ? params.agentId : null,
+        sessionKey: typeof params.sessionKey === "string" ? params.sessionKey : null,
+      },
+    },
+  };
+}