feat(admin): add bulk actions and pending-record deletion to creator income

- Always render the checkbox column and bulk bar; disable with a reason
  instead of hiding when settlement is off or the page has no pending rows
- Replace the batch-settle button with a bulk action select (settle / delete)
  plus apply, matching the charge cards and invite codes pages
- Add per-row delete for pending records and Revenue::delete_pending(),
  guarded by status = 'pending' so settled ledger-backed rows are never removed
- Report done / failed counts for bulk settle and delete

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/js/admin-income.js

@@ -1,4 +1,4 @@
-/** 创作分成：批量勾选计数、全选、结算二次确认 + 防重复提交。仅本页入队。 */
+/** 创作分成：勾选计数、全选、批量操作（结算 / 删除）、二次确认 + 防重复提交。仅本页入队。 */
 (function () {
   'use strict';
 
@@ -7,7 +7,8 @@
 
   var checkAll = root.querySelector('[data-aksrt-income-check-all]');
   var checks = Array.from(root.querySelectorAll('[data-aksrt-income-check]'));
-  var batchSubmit = root.querySelector('[data-aksrt-income-batch-submit]');
+  var bulkAction = root.querySelector('[data-aksrt-income-bulk-action]');
+  var bulkSubmit = root.querySelector('[data-aksrt-income-bulk-submit]');
   var selected = root.querySelector('[data-aksrt-income-selected]');
   var emptyText = selected ? selected.textContent : '';
 
@@ -17,12 +18,12 @@
 
   function sync() {
     var count = checkedCount();
-    if (batchSubmit) batchSubmit.disabled = count === 0;
+    if (bulkSubmit) bulkSubmit.disabled = count === 0 || !bulkAction || bulkAction.value === '';
     if (selected) {
       selected.textContent = count > 0 ? '已选 ' + count + ' 条' : emptyText;
       selected.classList.toggle('is-active', count > 0);
     }
-    if (checkAll) {
+    if (checkAll && !checkAll.disabled) {
       checkAll.checked = count > 0 && count === checks.length;
       checkAll.indeterminate = count > 0 && count < checks.length;
     }
@@ -35,8 +36,18 @@
     });
   }
   checks.forEach(function (box) { box.addEventListener('change', sync); });
+  if (bulkAction) bulkAction.addEventListener('change', sync);
   sync();
 
+  /** 单行表单的确认文案在 form 上；批量表单按所选操作取 option 上的文案。 */
+  function confirmMessage(form) {
+    if (bulkAction && form.contains(bulkAction)) {
+      var option = bulkAction.selectedOptions[0];
+      return option ? option.getAttribute('data-confirm') : '';
+    }
+    return form.getAttribute('data-aksrt-confirm');
+  }
+
   root.addEventListener('submit', function (event) {
     var form = event.target.closest('form');
     if (!form) return;
@@ -44,7 +55,7 @@
       event.preventDefault();
       return;
     }
-    var message = form.getAttribute('data-aksrt-confirm');
+    var message = confirmMessage(form);
     if (message && !window.confirm(message.replace('{count}', String(checkedCount())))) {
       event.preventDefault();
       return;