chore: add claw smoke runtime sample

scripts/claw-runtime-smoke.mjs

@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+
+function writeJson(payload) {
+  process.stdout.write(`${JSON.stringify(payload)}\n`);
+}
+
+async function readStdin() {
+  const chunks = [];
+  for await (const chunk of process.stdin) {
+    chunks.push(typeof chunk === "string" ? chunk : chunk.toString("utf8"));
+  }
+  return chunks.join("").trim();
+}
+
+function normalizePayload(raw) {
+  try {
+    const parsed = JSON.parse(raw);
+    if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) {
+      return {
+        ok: false,
+        error: "INVALID_CLAW_PAYLOAD: expected object",
+      };
+    }
+    return {
+      ok: true,
+      payload: parsed,
+    };
+  } catch {
+    return {
+      ok: false,
+      error: "INVALID_CLAW_PAYLOAD: invalid json",
+    };
+  }
+}
+
+const raw = await readStdin();
+const normalized = normalizePayload(raw);
+
+if (!normalized.ok) {
+  writeJson({
+    status: "failed",
+    error: normalized.error,
+  });
+  process.exit(0);
+}
+
+const payload = normalized.payload;
+const requestKind = typeof payload.requestKind === "string" ? payload.requestKind : "unknown";
+const model = typeof payload.model === "string" && payload.model.trim() ? payload.model.trim() : "default";
+const reasoningEffort =
+  typeof payload.reasoningEffort === "string" && payload.reasoningEffort.trim()
+    ? payload.reasoningEffort.trim()
+    : "default";
+const executionPrompt =
+  typeof payload.executionPrompt === "string" && payload.executionPrompt.trim()
+    ? payload.executionPrompt.trim()
+    : "链路正常";
+
+writeJson({
+  status: "completed",
+  output: `Claw smoke completed: ${executionPrompt} (kind=${requestKind}, model=${model}, reasoning=${reasoningEffort})`,
+});