feat(admin): redesign creator income page with status views and safer settlement

- Split PayIncome into shell + PayIncomeList flat sibling trait
- Add policy callout, per-currency stats, status views, filter card
- Show source post/order/buyer, base amount x ratio, expected settle time
- Confirm single/batch settlement, selection count, double-submit guard
- Redirect back preserving filters; report settled/failed counts
- Revenue: add get_status_counts(), share admin_list_where(), drop dead settle()

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

assets/js/admin-income.js

@@ -0,0 +1,69 @@
+/** 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。 */
+(function () {
+  'use strict';
+
+  var root = document.querySelector('.aksrt-income-page');
+  if (!root) return;
+
+  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 selected = root.querySelector('[data-aksrt-income-selected]');
+  var emptyText = selected ? selected.textContent : '';
+
+  function checkedCount() {
+    return checks.filter(function (box) { return box.checked; }).length;
+  }
+
+  function sync() {
+    var count = checkedCount();
+    if (batchSubmit) batchSubmit.disabled = count === 0;
+    if (selected) {
+      selected.textContent = count > 0 ? '已选 ' + count + ' 条' : emptyText;
+      selected.classList.toggle('is-active', count > 0);
+    }
+    if (checkAll) {
+      checkAll.checked = count > 0 && count === checks.length;
+      checkAll.indeterminate = count > 0 && count < checks.length;
+    }
+  }
+
+  if (checkAll) {
+    checkAll.addEventListener('change', function () {
+      checks.forEach(function (box) { box.checked = checkAll.checked; });
+      sync();
+    });
+  }
+  checks.forEach(function (box) { box.addEventListener('change', sync); });
+  sync();
+
+  root.addEventListener('submit', function (event) {
+    var form = event.target.closest('form');
+    if (!form) return;
+    if (form.dataset.submitting) {
+      event.preventDefault();
+      return;
+    }
+    var message = form.getAttribute('data-aksrt-confirm');
+    if (message && !window.confirm(message.replace('{count}', String(checkedCount())))) {
+      event.preventDefault();
+      return;
+    }
+    if (form.method.toLowerCase() !== 'post') return;
+    form.dataset.submitting = '1';
+    // 延后禁用：同步禁用 submit 按钮会让部分浏览器丢掉这次提交。
+    setTimeout(function () {
+      form.querySelectorAll('button[type="submit"]').forEach(function (button) { button.disabled = true; });
+    }, 0);
+  });
+
+  // bfcache 返回时恢复按钮与勾选计数，避免整页停在禁用态。
+  window.addEventListener('pageshow', function (event) {
+    if (!event.persisted) return;
+    root.querySelectorAll('form[data-submitting]').forEach(function (form) {
+      delete form.dataset.submitting;
+      form.querySelectorAll('button[type="submit"]').forEach(function (button) { button.disabled = false; });
+    });
+    sync();
+  });
+})();