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/css/admin/income.css

@@ -12,11 +12,12 @@
 .aksrt-income-page .aksrt-income-filters__id { width: 96px; }
 .aksrt-income-filters__submit { display: inline-flex; gap: 8px; }
 
-/* ---------- 批量结算 ---------- */
-.aksrt-income-batch { margin: 0; }
-.aksrt-income-batch__count { color: var(--an-muted); font-size: 12px; }
-.aksrt-income-batch__count.is-active { color: var(--an-text); font-weight: 500; }
-.aksrt-income-page .aksrt-income-batch .button:disabled { opacity: .6; cursor: not-allowed; }
+/* ---------- 批量操作 ---------- */
+.aksrt-income-bulk { margin: 0; }
+.aksrt-income-bulk__count { color: var(--an-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
+.aksrt-income-bulk__count.is-active { color: var(--an-text); font-weight: 500; }
+.aksrt-income-page .aksrt-income-bulk .button:disabled { opacity: .6; cursor: not-allowed; }
+.aksrt-income-table .check-column input:disabled { cursor: not-allowed; opacity: .45; }
 
 /* ---------- 分成表 ---------- */
 .aksrt-income-table { min-width: 1040px; table-layout: fixed; }
@@ -25,8 +26,8 @@
 .aksrt-income-table .column-source { width: 24%; }
 .aksrt-income-table .column-base { width: 14%; }
 .aksrt-income-table .column-amount { width: 12%; }
-.aksrt-income-table .column-status { width: 13%; }
-.aksrt-income-table .column-actions { width: 9%; }
+.aksrt-income-table .column-status { width: 12%; }
+.aksrt-income-table .column-actions { width: 13%; }
 .aksrt-income-table td,
 .aksrt-income-table tbody th { vertical-align: top; }
 .aksrt-income-id { color: var(--an-text); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; font-weight: 600; }
@@ -40,7 +41,8 @@ a.aksrt-income-post:focus { color: var(--an-primary); }
 .aksrt-income-table .column-base,
 .aksrt-income-table .column-amount { font-variant-numeric: tabular-nums; }
 
-/* 行内结算：单按钮 POST 表单 */
+/* 行内操作：每个按钮是一个独立 POST 表单 */
+.aksrt-income-actions { display: flex; flex-wrap: wrap; gap: 6px; }
 .aksrt-income-action { display: inline-flex; margin: 0; }
 .aksrt-income-action .button[disabled] { opacity: .6; cursor: progress; }