diff --git a/console-ui/public/portal/index.html b/console-ui/public/portal/index.html
index 56393b2..70ddf20 100644
--- a/console-ui/public/portal/index.html
+++ b/console-ui/public/portal/index.html
@@ -443,6 +443,21 @@ if (!window.ARCRUN_API_BASE) {
   <div class="view page" id="v-admin">
     <div class="pagehead"><span class="t">管理</span><span class="m">帳號與知識庫授權</span></div>
 
+    <div class="sechead">執行紀錄保留期</div>
+    <div class="panel">
+      <div style="font-size:16px;font-weight:600;margin-bottom:4px">保留天數</div>
+      <div style="font-size:13.5px;color:rgba(var(--ink-rgb),.55);margin-bottom:12px">執行紀錄是稽核資料，超過保留天數會被每日自動清除；預設 90 天（3 個月），也可設為「不刪除」（企業稽核用途）。</div>
+      <div class="formrow">
+        <input type="number" id="ad-ret-days" class="txt" min="1" step="1" placeholder="天數（例：90）">
+        <label style="display:flex;align-items:center;gap:7px;white-space:nowrap;font-size:15px;padding:0 4px">
+          <input type="checkbox" id="ad-ret-never"> 不刪除
+        </label>
+        <button class="btn" id="ad-ret-save" style="flex:none;padding:0 20px">儲存</button>
+      </div>
+      <div id="ad-ret-status" class="err" style="font-size:14px;min-height:1.2em;margin-top:8px"></div>
+      <div id="ad-ret-current" class="muted" style="font-size:13px;margin-top:2px"></div>
+    </div>
+
     <div class="sechead">帳號管理</div>
     <div class="panel">
       <div style="font-size:16px;font-weight:600;margin-bottom:4px">新增同仁帳號</div>
@@ -1573,9 +1588,57 @@ function taipeiMonthDay(ms) { var d = new Date(ms + TAIPEI_OFFSET_MS); return {
     });
   }
 
+  // 執行紀錄保留期（P7）：GET/PUT /portal/admin/execution-log-retention，role=admin 閘（server 端）。
+  // retention_days: number＝自訂天數；null＝「不刪除」（企業稽核，leo 08-07：「我願意花很多錢
+  // 保存，不要刪除」）；未設定過的租戶也會回一個值（KBDB 端退回預設 90 天）。
+  function loadRetention() {
+    $('ad-ret-current').textContent = '載入中…';
+    adminApi('GET', '/portal/admin/execution-log-retention')
+      .then(function (x) {
+        if (guard401(x.status)) return;
+        if (!x.ok) { $('ad-ret-current').textContent = ''; $('ad-ret-status').textContent = x.d.error || ('讀取失敗（HTTP ' + x.status + '）'); return; }
+        var days = x.d.retention_days;
+        var def = x.d.default_days || 90;
+        $('ad-ret-never').checked = (days === null);
+        $('ad-ret-days').value = (days === null) ? '' : (days != null ? days : def);
+        $('ad-ret-days').disabled = (days === null);
+        $('ad-ret-current').textContent = (days === null)
+          ? '目前設定：不刪除（企業稽核）'
+          : '目前設定：保留 ' + (days != null ? days : def) + ' 天' + (days == null ? '（沿用預設值，尚未自訂）' : '');
+      })
+      .catch(function (e) { $('ad-ret-current').textContent = ''; $('ad-ret-status').textContent = friendlyErr(e); });
+  }
+  $('ad-ret-never').addEventListener('change', function () {
+    $('ad-ret-days').disabled = this.checked;
+  });
+  $('ad-ret-save').addEventListener('click', function () {
+    var st = $('ad-ret-status');
+    st.textContent = '';
+    var never = $('ad-ret-never').checked;
+    var body;
+    if (never) {
+      body = { retention_days: null };
+    } else {
+      var n = parseInt($('ad-ret-days').value, 10);
+      if (!n || n <= 0) { st.textContent = '請輸入大於 0 的天數，或勾「不刪除」'; return; }
+      body = { retention_days: n };
+    }
+    $('ad-ret-save').disabled = true;
+    adminApi('PUT', '/portal/admin/execution-log-retention', body)
+      .then(function (x) {
+        $('ad-ret-save').disabled = false;
+        if (guard401(x.status)) return;
+        if (!x.ok) { st.textContent = x.d.error || ('儲存失敗（HTTP ' + x.status + '）'); return; }
+        toast('保留期已更新');
+        loadRetention();
+      })
+      .catch(function (e) { $('ad-ret-save').disabled = false; st.textContent = friendlyErr(e); });
+  });
+
   function loadAdmin() {
     $('ad-users').innerHTML = '<div class="muted">載入中…</div>';
     $('ad-libs').innerHTML = '<div class="muted">載入中…</div>';
+    loadRetention();
     adminApi('GET', '/portal/admin/libraries')
       .then(function (x) {
         if (guard401(x.status)) return;