diff --git a/server/config/cron_tasks.js b/server/config/cron_tasks.js
index 5782d9f..ab02cf9 100644
--- a/server/config/cron_tasks.js
+++ b/server/config/cron_tasks.js
@@ -11,11 +11,14 @@ export const cron_task_list = [
     type: 'flow',
     flow_name: 'amazon_search_detail_reviews',
     flow_payload: {
-      keyword: '野餐包',
+      // 插件参数：category_keyword / sort_by / limit
+      category_keyword: '野餐包',
+      // featured / price_asc / price_desc / review / newest / bestseller
+      sort_by: 'bestseller',
       limit: 100,
-      max_products: 30,
+
+      // flow 自己的参数
       reviews_limit: 50,
-      concurrency: 1,
       gap_ms: 500
     }
   }
diff --git a/server/services/flows/amazon/amazon_search_detail_reviews_flow.js b/server/services/flows/amazon/amazon_search_detail_reviews_flow.js
index eabc839..8bf04b8 100644
--- a/server/services/flows/amazon/amazon_search_detail_reviews_flow.js
+++ b/server/services/flows/amazon/amazon_search_detail_reviews_flow.js
@@ -2,6 +2,7 @@ import { execute_action_and_record } from '../../task_executor.js';
 import { map_limit, sleep_ms } from '../flow_utils.js';
 import { amazon_product, amazon_search_item, amazon_review } from '../../../models/index.js';
 import { safe_json_stringify } from '../../json_utils.js';
+import { close_browser } from '../../puppeteer/puppeteer_runner.js';
 
 function build_batch_key(prefix) {
   return `${prefix}_${Date.now()}_${Math.random().toString().slice(2, 8)}`;
@@ -13,7 +14,34 @@ function pick_asin_from_url(url) {
   return m && m[1] ? m[1].toUpperCase() : null;
 }
 
-async function persist_detail(detail_res) {
+function unwrap_action_result(res) {
+  // 插件返回通常是 { ..., result: { stage, items... } }
+  if (res && typeof res === 'object' && res.result && typeof res.result === 'object') {
+    return res.result;
+  }
+  return res;
+}
+
+function normalize_sort_by(sort_by) {
+  if (sort_by === undefined || sort_by === null || sort_by === '') {
+    return null;
+  }
+
+  const s = String(sort_by).trim();
+  if (!s) {
+    return null;
+  }
+
+  const allow = new Set(['featured', 'price_asc', 'price_desc', 'review', 'newest', 'bestseller']);
+  if (!allow.has(s)) {
+    throw new Error(`sort_by 不支持: ${s}`);
+  }
+
+  return s;
+}
+
+async function persist_detail(detail_res_raw) {
+  const detail_res = unwrap_action_result(detail_res_raw);
   if (!detail_res || detail_res.stage !== 'detail') {
     return;
   }
@@ -48,7 +76,8 @@ async function persist_detail(detail_res) {
   });
 }
 
-async function persist_list(list_res) {
+async function persist_list(list_res_raw) {
+  const list_res = unwrap_action_result(list_res_raw);
   if (!list_res || list_res.stage !== 'list') {
     return;
   }
@@ -77,7 +106,8 @@ async function persist_list(list_res) {
   }
 }
 
-async function persist_reviews(reviews_res) {
+async function persist_reviews(reviews_res_raw) {
+  const reviews_res = unwrap_action_result(reviews_res_raw);
   if (!reviews_res || reviews_res.stage !== 'reviews') {
     return;
   }
@@ -110,10 +140,10 @@ async function persist_reviews(reviews_res) {
 }
 
 function must_string(v, name) {
-  if (!v || typeof v !== 'string') {
+  if (typeof v !== 'string' || !v.trim()) {
     throw new Error(`flow 参数 ${name} 必须是字符串`);
   }
-  return v;
+  return v.trim();
 }
 
 function get_int(v, default_value) {
@@ -123,40 +153,47 @@ function get_int(v, default_value) {
 }
 
 export async function run_amazon_search_detail_reviews_flow(flow_payload) {
-  const keyword = must_string(flow_payload.keyword, 'keyword');
+  const category_keyword = must_string(flow_payload.category_keyword, 'category_keyword');
+  const sort_by = normalize_sort_by(flow_payload.sort_by);
   const limit = get_int(flow_payload.limit, 100);
-  const max_products = get_int(flow_payload.max_products, 30);
   const reviews_limit = get_int(flow_payload.reviews_limit, 50);
-  const concurrency = get_int(flow_payload.concurrency, 1);
   const gap_ms = get_int(flow_payload.gap_ms, 0);
 
+
+
+  const list_payload = { category_keyword, limit };
+  if (sort_by) {
+    list_payload.sort_by = sort_by;
+  }
+
   const list_res = await execute_action_and_record({
     action_name: 'amazon_search_list',
-    action_payload: { keyword, limit },
+    action_payload: list_payload,
     source: 'cron'
   });
 
   await persist_list(list_res);
 
-  if (!list_res || list_res.stage !== 'list') {
+  const list_result = unwrap_action_result(list_res);
+  if (!list_result || list_result.stage !== 'list') {
     throw new Error('amazon_search_list 返回非 list stage');
   }
 
-  const items = Array.isArray(list_res.items) ? list_res.items : [];
+  const items = Array.isArray(list_result.items) ? list_result.items : [];
   const urls = items
     .map((it) => (it && it.url ? String(it.url) : ''))
     .filter((u) => u);
 
-  const picked_urls = urls.slice(0, Math.max(0, max_products));
+  const picked_urls = urls;
 
-  await map_limit(picked_urls, concurrency, async (product_url) => {
+
+  for (const url of picked_urls) {
     if (gap_ms > 0) {
       await sleep_ms(gap_ms);
     }
-
     const detail_res = await execute_action_and_record({
       action_name: 'amazon_product_detail',
-      action_payload: { product_url },
+      action_payload: { product_url: url },
       source: 'cron'
     });
 
@@ -168,23 +205,27 @@ export async function run_amazon_search_detail_reviews_flow(flow_payload) {
 
     const reviews_res = await execute_action_and_record({
       action_name: 'amazon_product_reviews',
-      action_payload: { product_url, limit: reviews_limit },
-      source: 'cron'
+      action_payload: { product_url: url, limit: reviews_limit },
+      source: 'cron',
+      keep_browser_open: true
     });
 
     await persist_reviews(reviews_res);
+  }
 
-    return null;
-  });
 
-  return {
+  const summary = {
     stage: 'flow',
     flow_name: 'amazon_search_detail_reviews',
-    keyword,
+    category_keyword,
+    sort_by: sort_by || 'featured',
     limit,
-    max_products,
     reviews_limit,
     total_urls: urls.length,
     picked: picked_urls.length
   };
+
+  await close_browser();
+
+  return summary;
 }
diff --git a/server/services/flows/flow_utils.js b/server/services/flows/flow_utils.js
index 9979e67..8b1790b 100644
--- a/server/services/flows/flow_utils.js
+++ b/server/services/flows/flow_utils.js
@@ -2,9 +2,8 @@ export async function sleep_ms(ms) {
   await new Promise((resolve) => setTimeout(resolve, ms));
 }
 
-export async function map_limit(items, limit, worker) {
+export async function map_limit(items, worker) {
   const list = Array.isArray(items) ? items : [];
-  const n = Math.max(1, Number(limit || 1));
 
   const res = new Array(list.length);
   let idx = 0;
@@ -18,7 +17,7 @@ export async function map_limit(items, limit, worker) {
   }
 
   const runners = [];
-  for (let i = 0; i < Math.min(n, list.length); i += 1) {
+  for (let i = 0; i < list.length; i += 1) {
     runners.push(run_one());
   }
 
diff --git a/server/services/puppeteer/puppeteer_runner.js b/server/services/puppeteer/puppeteer_runner.js
index b55e0e6..49fa1b1 100644
--- a/server/services/puppeteer/puppeteer_runner.js
+++ b/server/services/puppeteer/puppeteer_runner.js
@@ -6,6 +6,18 @@ import { apply_page_stealth_defaults, get_stealth_puppeteer } from './puppeteer_
 
 let browser_singleton = null;
 
+export async function close_browser() {
+  if (!browser_singleton) {
+    return;
+  }
+  try {
+    await browser_singleton.close();
+  } catch (err) {
+    // ignore
+  }
+  browser_singleton = null;
+}
+
 function get_action_timeout_ms() {
   const cfg = get_app_config();
   return cfg.crawler.action_timeout_ms;
@@ -94,7 +106,7 @@ export async function get_or_create_browser() {
   return browser_singleton;
 }
 
-export async function invoke_extension_action(action_name, action_payload) {
+export async function invoke_extension_action(action_name, action_payload, options) {
   const cfg = get_app_config();
   const browser = await get_or_create_browser();
 
@@ -189,13 +201,9 @@ export async function invoke_extension_action(action_name, action_payload) {
       }
     }
 
-    if (cfg.crawler.auto_close_browser) {
-      try {
-        await browser.close();
-      } catch (err) {
-        // ignore
-      }
-      browser_singleton = null;
+    const keep_browser_open = options && options.keep_browser_open === true;
+    if (cfg.crawler.auto_close_browser && !keep_browser_open) {
+      await close_browser();
     }
   }
 }
diff --git a/server/services/schedule_loader.js b/server/services/schedule_loader.js
index b49cc83..b06b1c7 100644
--- a/server/services/schedule_loader.js
+++ b/server/services/schedule_loader.js
@@ -30,15 +30,15 @@ async function run_cron_task(task) {
 
 export async function start_all_cron_tasks() {
   for (const task of cron_task_list) {
-    const job = cron.schedule(task.cron_expression, async () => {
+    // const job = cron.schedule(task.cron_expression, async () => {
       try {
         await run_cron_task(task);
       } catch (err) {
         // action 内部已记录 crawl_run_record；flow 内部 action 也会记录
       }
-    });
+    // });
 
-    cron_jobs.push(job);
+    // cron_jobs.push(job);
   }
 }
 
diff --git a/server/services/task_executor.js b/server/services/task_executor.js
index cf0cbe4..4251356 100644
--- a/server/services/task_executor.js
+++ b/server/services/task_executor.js
@@ -3,7 +3,7 @@ import { safe_json_stringify } from './json_utils.js';
 import { invoke_extension_action } from './puppeteer/puppeteer_runner.js';
 
 export async function execute_action_and_record(params) {
-  const { action_name, action_payload, source } = params;
+  const { action_name, action_payload, source, keep_browser_open } = params;
 
   const request_payload = safe_json_stringify(action_payload || {});
 
@@ -12,12 +12,14 @@ export async function execute_action_and_record(params) {
   let error_message = null;
 
   try {
-    const result = await invoke_extension_action(action_name, action_payload || {});
+    const result_obj = await invoke_extension_action(action_name, action_payload || {}, {
+      keep_browser_open: keep_browser_open === true
+    });
 
     ok = true;
-    result_payload = safe_json_stringify(result);
+    result_payload = safe_json_stringify(result_obj);
 
-    return result;
+    return result_obj.result;
   } catch (err) {
     ok = false;
     error_message = (err && err.message) || String(err);