diff --git a/mv2_simple_crx/src/actions/amazon.js b/mv2_simple_crx/src/actions/amazon.js
index 1feaf04..a62e067 100644
--- a/mv2_simple_crx/src/actions/amazon.js
+++ b/mv2_simple_crx/src/actions/amazon.js
@@ -1,10 +1,10 @@
 // amazon_top_list：Amazon TOP 榜单抓取（Best Sellers / New Releases / Movers & Shakers）
 
-import { openTab } from '../libs/tabs.js';
-import { execute_script } from '../libs/inject.js';
+import { create_tab_task } from '../libs/tabs.js';
+import { injected_amazon_search_list } from '../injected/amazon_search_list.js';
 
 export function amazon_search_list(data, sendResponse) {
-  return new Promise((resolve, reject) => {
+  return new Promise(async (resolve, reject) => {
     const category_keyword = (data && data.category_keyword) ? String(data.category_keyword).trim() : '';
 
     const keyword = category_keyword || '野餐包';
@@ -24,159 +24,40 @@ export function amazon_search_list(data, sendResponse) {
 
     let times = 0;
 
-    openTab({
-      url,
-      latest: false,
-      top: 20,
-      left: 20,
-      width: 1440,
-      height: 900,
-      target: '__amazon_search_list',
+    const send_action = (action, payload) => {
+      if (typeof sendResponse === 'function') {
+        sendResponse({ action, data: payload });
+        sendResponse.log && sendResponse.log(payload);
+      }
+    };
 
-      tabError(tab, details) {
-        const result = {
-          code: 30,
-          status: false,
-          message: (details && (details.message || details.statusLine || details.error)) || 'tab error',
-          data: null,
-          documentURI: details && details.url,
-        };
+    const tab_task = create_tab_task(url)
+      .set_latest(false)
+      .set_bounds({ top: 20, left: 20, width: 1440, height: 900 })
+      .set_target('__amazon_search_list');
 
-        sendResponse && sendResponse({ action: 'amazon_search_list', data: result });
-        sendResponse && sendResponse.log && sendResponse.log(result);
+    try {
+      const tab = await tab_task.open_async();
 
-        if (tab && tab.remove) {
-          tab.remove(1500);
-        }
+      await tab.execute_script(injected_amazon_search_list, [{ url, category_keyword }], 'document_idle');
 
-        reject(new Error(result.message));
-      },
+      const result = { code: 0, status: true, message: 'ok', data: { tab_id: tab.id, url, category_keyword } };
+      send_action('amazon_search_list', result);
+      resolve({ tab_id: tab.id, url, category_keyword });
 
-      tabUpdated(tab, details) {
-        if (times > 0) return;
-        times += 1;
-
-        const tab_id = tab && tab.id;
-        if (!tab_id) {
-          return reject(new Error('tab.id 为空'));
-        }
-
-        execute_script(
-          tab_id,
-          {
-            fn: (params) => {
-              const action = 'amazon_search_list';
-              const start_url = params && params.url ? String(params.url) : location.href;
-              const category_keyword = params && params.category_keyword ? String(params.category_keyword).trim() : '';
-
-              function send(action_name, data) {
-                try {
-                  chrome.runtime.sendMessage({ type: 'push', action: action_name, data });
-                } catch (e) {
-                  // ignore
-                }
-              }
-
-              function abs_url(href) {
-                try {
-                  return new URL(href, location.origin).toString();
-                } catch (_) {
-                  return href;
-                }
-              }
-
-              function parse_asin_from_url(url) {
-                if (!url || typeof url !== 'string') return null;
-                const m = url.match(/\/dp\/([A-Z0-9]{10})/i) || url.match(/\/gp\/product\/([A-Z0-9]{10})/i);
-                return m ? m[1].toUpperCase() : null;
-              }
-
-              function extract_results() {
-                const items = [];
-                const nodes = document.querySelectorAll('div.s-main-slot div[data-component-type="s-search-result"]');
-                nodes.forEach((el, idx) => {
-                  const asin = (el.getAttribute('data-asin') || '').trim() || null;
-
-                  const title_el = el.querySelector('h2 span') || el.querySelector('h2');
-                  const title = title_el ? title_el.textContent.trim() : null;
-
-                  // 搜索页有的标题在 h2 里，不一定包在 <a> 里；链接一般在 a[href*="/dp/"]
-                  const a = el.querySelector('a[href*="/dp/"], a[href*="/gp/product/"]');
-                  const href = a ? a.getAttribute('href') : null;
-                  const url = href ? abs_url(href) : null;
-
-
-                  const price_el = el.querySelector('span.a-price > span.a-offscreen');
-                  const price = price_el ? price_el.textContent.trim() : null;
-
-                  const rating_el = el.querySelector('span.a-icon-alt');
-                  const rating_text = rating_el ? rating_el.textContent.trim() : null;
-
-                  // 评论数在不同语言/布局下 class 不稳定，这里做弱依赖
-                  const review_count_el =
-                    el.querySelector('span[aria-label$="ratings"]') ||
-                    el.querySelector('span[aria-label$="rating"]') ||
-                    el.querySelector('span[aria-label$="评价"]') ||
-                    el.querySelector('span[aria-label$="评分"]');
-                  const review_count_text = review_count_el ? review_count_el.textContent.trim() : null;
-
-                  items.push({
-                    index: idx + 1,
-                    asin: asin || parse_asin_from_url(url),
-                    title,
-                    url,
-                    price,
-                    rating_text,
-                    review_count_text,
-                  });
-                });
-
-                return items;
-              }
-
-              const items = extract_results();
-
-              send(action, {
-                stage: 'start',
-                start_url,
-                href: location.href,
-                category_keyword,
-                total: items.length,
-              });
-
-              // 不逐条推送，直接一次性推完整列表
-              send(action, {
-                stage: 'list',
-                category_keyword,
-                total: items.length,
-                items,
-              });
-
-              send(action, { stage: 'end', category_keyword, total: items.length });
-            },
-            args: [{ url, category_keyword }],
-          },
-          'document_idle',
-        )
-          .then(() => {
-            const result = {
-              code: 0,
-              status: true,
-              message: 'ok',
-              data: { tab_id, url, category_keyword },
-            };
-            sendResponse && sendResponse({ action: 'amazon_search_list', data: result });
-            sendResponse && sendResponse.log && sendResponse.log(result);
-            resolve({ tab_id, url, category_keyword });
-          })
-          .catch((err) => {
-            if (tab && tab.remove) {
-              tab.remove(500);
-            }
-            reject(err);
-          });
-      },
-    });
+      // 可选：自动关 tab（默认不关，方便调试）
+      // tab && tab.remove && tab.remove(3500);
+    } catch (err) {
+      const result = {
+        code: 30,
+        status: false,
+        message: (err && err.message) || String(err),
+        data: null,
+        documentURI: url,
+      };
+      send_action('amazon_search_list', result);
+      reject(err);
+    }
   });
 }
 
diff --git a/mv2_simple_crx/src/background/index.js b/mv2_simple_crx/src/background/index.js
index 3af9002..ba5cdb3 100644
--- a/mv2_simple_crx/src/background/index.js
+++ b/mv2_simple_crx/src/background/index.js
@@ -101,17 +101,17 @@ chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
 
   const action_send_response = create_action_send_response(sender);
 
-  Promise.resolve()
-    .then(() => fn(message.data || {}, action_send_response))
-    .then((res) => {
+  (async () => {
+    try {
+      const res = await fn(message.data || {}, action_send_response);
       emit_ui_event('response', { type: 'response', request_id, ok: true, data: res, sender });
       sendResponse({ ok: true, data: res, request_id });
-    })
-    .catch((err) => {
+    } catch (err) {
       const error = (err && err.message) || String(err);
       emit_ui_event('response', { type: 'response', request_id, ok: false, error, sender });
       sendResponse({ ok: false, error, request_id });
-    });
+    }
+  })();
 
   return true;
 });
diff --git a/mv2_simple_crx/src/content/content.js b/mv2_simple_crx/src/content/content.js
index f07f7c7..e32c175 100644
--- a/mv2_simple_crx/src/content/content.js
+++ b/mv2_simple_crx/src/content/content.js
@@ -112,8 +112,9 @@
             if (options.body !== undefined) detail.data = options.body;
           }
 
-          return target(...args)
-            .then(async (response) => {
+          return (async () => {
+            try {
+              const response = await target(...args);
               detail.ok = true;
               detail.message = 'ok';
               const cloneResponse = response.clone();
@@ -122,7 +123,6 @@
               detail.redirected = cloneResponse.redirected;
               detail.url = cloneResponse.url;
               detail.text = await cloneResponse.text();
-              detail.response = response.clone();
               detail.responseContentType = response.headers.get('Content-Type')?.toLowerCase();
               if (
                 detail.responseContentType &&
@@ -131,14 +131,12 @@
                 detail.json = await response.clone().json();
               }
               return response;
-            })
-            .catch((error) => {
+            } catch (error) {
               detail.ok = false;
               detail.error = error;
               detail.message = error.message;
               throw error;
-            })
-            .finally(() => {
+            } finally {
               const payload = {
                 TAG: detail.TAG,
                 method: detail.method,
@@ -154,7 +152,8 @@
 
               window.dispatchEvent(new CustomEvent('__REQUEST_DONE', { detail: payload }));
               detail = null;
-            });
+            }
+          })();
         },
       });
     }
diff --git a/mv2_simple_crx/src/injected/amazon_search_list.js b/mv2_simple_crx/src/injected/amazon_search_list.js
new file mode 100644
index 0000000..2bd50be
--- /dev/null
+++ b/mv2_simple_crx/src/injected/amazon_search_list.js
@@ -0,0 +1,75 @@
+// 注入到页面的 Amazon 搜索列表解析逻辑
+
+export function injected_amazon_search_list(params) {
+  const action = 'amazon_search_list';
+  const start_url = params && params.url ? String(params.url) : location.href;
+  const category_keyword = params && params.category_keyword ? String(params.category_keyword).trim() : '';
+
+  function send(action_name, data) {
+    try {
+      chrome.runtime.sendMessage({ type: 'push', action: action_name, data });
+    } catch (e) {
+      // ignore
+    }
+  }
+
+  function abs_url(href) {
+    try {
+      return new URL(href, location.origin).toString();
+    } catch (_) {
+      return href;
+    }
+  }
+
+  function parse_asin_from_url(url) {
+    if (!url || typeof url !== 'string') return null;
+    const m = url.match(/\/dp\/([A-Z0-9]{10})/i) || url.match(/\/gp\/product\/([A-Z0-9]{10})/i);
+    return m ? m[1].toUpperCase() : null;
+  }
+
+  function extract_results() {
+    const items = [];
+    const nodes = document.querySelectorAll('div.s-main-slot div[data-component-type="s-search-result"]');
+    nodes.forEach((el, idx) => {
+      const asin = (el.getAttribute('data-asin') || '').trim() || null;
+
+      const title_el = el.querySelector('h2 span') || el.querySelector('h2');
+      const title = title_el ? title_el.textContent.trim() : null;
+
+      const a = el.querySelector('a[href*="/dp/"], a[href*="/gp/product/"]');
+      const href = a ? a.getAttribute('href') : null;
+      const url = href ? abs_url(href) : null;
+
+      const price_el = el.querySelector('span.a-price > span.a-offscreen');
+      const price = price_el ? price_el.textContent.trim() : null;
+
+      const rating_el = el.querySelector('span.a-icon-alt');
+      const rating_text = rating_el ? rating_el.textContent.trim() : null;
+
+      const review_count_el =
+        el.querySelector('span[aria-label$="ratings"]') ||
+        el.querySelector('span[aria-label$="rating"]') ||
+        el.querySelector('span[aria-label$="评价"]') ||
+        el.querySelector('span[aria-label$="评分"]');
+      const review_count_text = review_count_el ? review_count_el.textContent.trim() : null;
+
+      items.push({
+        index: idx + 1,
+        asin: asin || parse_asin_from_url(url),
+        title,
+        url,
+        price,
+        rating_text,
+        review_count_text,
+      });
+    });
+
+    return items;
+  }
+
+  const items = extract_results();
+
+  send(action, { stage: 'start', start_url, href: location.href, category_keyword, total: items.length });
+  send(action, { stage: 'list', category_keyword, total: items.length, items });
+  send(action, { stage: 'end', category_keyword, total: items.length });
+}
diff --git a/mv2_simple_crx/src/libs/inject.js b/mv2_simple_crx/src/libs/inject.js
index 96c4a30..f9ef9e0 100644
--- a/mv2_simple_crx/src/libs/inject.js
+++ b/mv2_simple_crx/src/libs/inject.js
@@ -1,23 +1,19 @@
 // executeScript：MV2 使用 chrome.tabs.executeScript
 
-function normalize_code(code) {
-  // 支持：直接传函数
-  if (typeof code === 'function') {
-    return `(${code.toString()})();`;
+function build_code(fn, args) {
+  if (typeof fn === 'function') {
+    if (Array.isArray(args) && args.length) {
+      return `(${fn.toString()}).apply(null, ${JSON.stringify(args)});`;
+    }
+    return `(${fn.toString()})();`;
   }
-
-  // 支持：传 { fn, args }，这样 action 文件里不需要拼字符串也能传参
-  if (code && typeof code === 'object' && typeof code.fn === 'function') {
-    const args = Array.isArray(code.args) ? code.args : [];
-    return `(${code.fn.toString()}).apply(null, ${JSON.stringify(args)});`;
-  }
-
-  return code;
+  return fn;
 }
 
-export function execute_script(tab_id, code, run_at) {
+// execute_script(tabId, fn, args?, runAt?)
+export function execute_script(tab_id, fn, args, run_at) {
   run_at = run_at || 'document_idle';
-  code = normalize_code(code);
+  const code = build_code(fn, args);
 
   return new Promise((resolve, reject) => {
     chrome.tabs.executeScript(
diff --git a/mv2_simple_crx/src/libs/tabs.js b/mv2_simple_crx/src/libs/tabs.js
index 49cdd9e..dd00358 100644
--- a/mv2_simple_crx/src/libs/tabs.js
+++ b/mv2_simple_crx/src/libs/tabs.js
@@ -1,5 +1,7 @@
 // openTab：MV2 版本（极简 + 回调风格）
 
+import { execute_script } from './inject.js';
+
 function attach_tab_helpers(tab) {
   if (!tab) return tab;
 
@@ -10,6 +12,10 @@ function attach_tab_helpers(tab) {
     }, Math.max(0, delay_ms));
   };
 
+  tab.execute_script = async function execute_script_on_tab(fn, args, run_at) {
+    return await execute_script(tab.id, fn, args, run_at);
+  };
+
   return tab;
 }
 
@@ -55,24 +61,46 @@ export function close_tab(tab_id, delay_ms) {
   }, Math.max(0, delay_ms));
 }
 
-// 兼容你原来的调用风格：openTab({ url, ..., tabError(tab, details), tabUpdated(tab, details) })
-export function openTab(options) {
-  options = options && typeof options === 'object' ? options : {};
-  const url = options.url;
+// openTab 任务对象：用对象绑定方法，减少重复参数
+export function create_tab_task(url) {
+  const task = {
+    url,
+    latest: false,
+    top: 20,
+    left: 20,
+    width: 1440,
+    height: 900,
+    target: null,
+    active: true,
+    // 你期望的写法：tab_task.on_updated = () => {}
+    on_error: null,
+    on_updated: null,
+    set_bounds(bounds) {
+      bounds = bounds && typeof bounds === 'object' ? bounds : {};
+      if (Object.prototype.hasOwnProperty.call(bounds, 'top')) this.top = bounds.top;
+      if (Object.prototype.hasOwnProperty.call(bounds, 'left')) this.left = bounds.left;
+      if (Object.prototype.hasOwnProperty.call(bounds, 'width')) this.width = bounds.width;
+      if (Object.prototype.hasOwnProperty.call(bounds, 'height')) this.height = bounds.height;
+      return this;
+    },
+    set_target(target) {
+      this.target = target || null;
+      return this;
+    },
+    set_latest(latest) {
+      this.latest = !!latest;
+      return this;
+    },
+    set_active(active) {
+      this.active = active !== false;
+      return this;
+    },
+    async open_async() {
+      // 直接返回 tab 对象（带 remove / execute_script）
+      const { tab } = await open_tab(this.url, { active: this.active !== false });
+      return tab;
+    },
+  };
 
-  const tabError = typeof options.tabError === 'function' ? options.tabError : () => void 0;
-  const tabUpdated = typeof options.tabUpdated === 'function' ? options.tabUpdated : () => void 0;
-
-  if (!url) {
-    tabError(null, { error: 'url 不能为空' });
-    return;
-  }
-
-  open_tab(url, { active: options.active !== false })
-    .then(({ tab }) => {
-      tabUpdated(tab, { status: 'complete' });
-    })
-    .catch((err) => {
-      tabError(null, { error: err.message || String(err) });
-    });
+  return task;
 }
diff --git a/mv2_simple_crx/src/ui/index.html b/mv2_simple_crx/src/ui/index.html
index 8f2c789..2359984 100644
--- a/mv2_simple_crx/src/ui/index.html
+++ b/mv2_simple_crx/src/ui/index.html
@@ -44,11 +44,6 @@
           <div class="card_title">响应</div>
           <pre id="last_response" class="pre"></pre>
         </div>
-
-        <div class="card span2">
-          <div class="card_title">推送事件（实时）</div>
-          <pre id="event_log" class="pre pre_scroll"></pre>
-        </div>
       </div>
     </div>
 
diff --git a/mv2_simple_crx/src/ui/index.js b/mv2_simple_crx/src/ui/index.js
index 81fc7c8..7624d06 100644
--- a/mv2_simple_crx/src/ui/index.js
+++ b/mv2_simple_crx/src/ui/index.js
@@ -4,8 +4,8 @@ const btn_run_el = document.getElementById('btn_run');
 const btn_clear_el = document.getElementById('btn_clear');
 const btn_bg_reload_el = document.getElementById('btn_bg_reload');
 const last_response_el = document.getElementById('last_response');
-const event_log_el = document.getElementById('event_log');
 let actions_meta = {};
+const ui_state = { events: [] };
 
 function now_time() {
   const d = new Date();
@@ -25,34 +25,40 @@ function set_last_response(obj) {
   last_response_el.textContent = JSON.stringify(obj, null, 2);
 }
 
-function append_event_line(obj) {
-  const line = `[${now_time()}] ${JSON.stringify(obj)}`;
-  event_log_el.textContent = (event_log_el.textContent ? event_log_el.textContent + '\n' : '') + line;
-  event_log_el.scrollTop = event_log_el.scrollHeight;
+function render_state() {
+  // 只在一个窗口展示所有数据，方便查看
+  last_response_el.textContent = JSON.stringify(ui_state, null, 2);
+}
+
+function push_event(obj) {
+  ui_state.events.push({ ts: now_time(), ...obj });
+  // 简单限长，避免无限增长
+  if (ui_state.events.length > 300) {
+    ui_state.events.splice(0, ui_state.events.length - 300);
+  }
+  render_state();
 }
 
 btn_run_el.addEventListener('click', () => {
   const action = action_name_el.value;
   const params = safe_json_parse(action_params_el.value || '{}');
 
-  append_event_line({ type: 'call', action, params });
-  set_last_response({ running: true, action, params });
+  push_event({ type: 'call', action, params });
 
   chrome.runtime.sendMessage({ action, data: params }, (res) => {
-    set_last_response(res);
-    append_event_line({ type: 'response', action, res });
+    push_event({ type: 'reply', action, res });
   });
 });
 
 btn_clear_el.addEventListener('click', () => {
-  last_response_el.textContent = '';
-  event_log_el.textContent = '';
+  ui_state.events = [];
+  render_state();
 });
 
 btn_bg_reload_el.addEventListener('click', () => {
-  append_event_line({ type: 'ui', action: 'reload_background' });
+  push_event({ type: 'ui', action: 'reload_background' });
   chrome.runtime.sendMessage({ action: 'reload_background', data: {} }, (res) => {
-    append_event_line({ type: 'ui', action: 'reload_background_done', res });
+    push_event({ type: 'ui', action: 'reload_background_done', res });
   });
 });
 
@@ -103,17 +109,17 @@ chrome.runtime.onMessage.addListener((message) => {
   }
 
   if (message.event_name === 'push') {
-    append_event_line({ type: 'push', payload: message.payload });
+    push_event({ type: 'push', payload: message.payload });
     return;
   }
 
   if (message.event_name === 'request') {
-    append_event_line({ type: 'request', payload: message.payload });
+    push_event({ type: 'request', payload: message.payload });
     return;
   }
 
   if (message.event_name === 'response') {
-    append_event_line({ type: 'bg_response', payload: message.payload });
+    push_event({ type: 'bg_response', payload: message.payload });
     return;
   }
 });
@@ -126,4 +132,5 @@ chrome.runtime.sendMessage({ action: 'meta_actions', data: {} }, (res) => {
   }
 });
 
-append_event_line({ type: 'ready', hint: '点击右侧/上方执行按钮开始' });
+render_state();
+push_event({ type: 'ready', hint: '点击右侧/上方执行按钮开始' });