feat(pdf-admin): 支持全选/多选批量硬删并去掉删除二次确认

- 工具栏新增「批量硬删」按钮，实时显示选中数，无选中时禁用
- 表头复选框全选/反选，行复选框多选，行级选中状态同步全选框
- 批量删除并发执行 DELETE，逐项淡出移除并汇总结果 toast
- 单条与批量删除均直接执行，移除 confirm() 二次确认
- 新增 .col-check 复选框列样式（窄宽居中）

static/pdf_admin.css

@@ -10,6 +10,11 @@
 .jobs-table td.col-act .btn { padding: 0.3em 0.8em; font-size: 0.85em; margin-left: 0.3em; }
 .jobs-table td.col-name { font-weight: 600; word-break: break-all; }
 
+/* 复选框列：窄宽居中，避免视觉噪声 */
+.jobs-table th.col-check,
+.jobs-table td.col-check { width: 2.5em; text-align: center; vertical-align: middle; }
+.jobs-table td.col-check input { cursor: pointer; }
+
 .bar { height: 8px; background: var(--surface-2); border-radius: 6px; overflow: hidden; border: 1px solid var(--border); }
 .bar__fill { height: 100%; width: 0; background: var(--primary); border-radius: 6px; transition: width 0.2s; }
 .bar--sm { display: inline-block; width: 90px; vertical-align: middle; height: 6px; }

static/pdf_admin.html

@@ -14,6 +14,7 @@
 
   <div class="toolbar">
     <button class="btn primary" id="refresh">刷新</button>
+    <button class="btn danger" id="bulkDelete" disabled>批量硬删 <span id="selCount"></span></button>
     <span class="muted" id="count"></span>
   </div>
 

static/pdf_admin.js

@@ -1,16 +1,25 @@
-/* PDF 转换管理页：拉取 /api/admin/pdf/jobs、渲染表格（含「是否已删除」列）、硬删。 */
+/* PDF 转换管理页：拉取 /api/admin/pdf/jobs、渲染表格（含「是否已删除」列）、硬删。
+   支持全选/多选批量硬删；删除直接执行，无二次确认。 */
 (function () {
   "use strict";
   const { el, toast, fmtBytes, fmtTime, api } = window.ZK;
   const listEl = document.getElementById("list");
   const countEl = document.getElementById("count");
   const refreshBtn = document.getElementById("refresh");
+  const bulkDeleteBtn = document.getElementById("bulkDelete");
+  const selCountEl = document.getElementById("selCount");
+
+  // 选中集合：以 job id 为键，值为对应行元素，便于 O(1) 增删与遍历
+  const selected = new Map();
 
   refreshBtn.addEventListener("click", load);
+  bulkDeleteBtn.addEventListener("click", bulkRemove);
 
   async function load() {
     listEl.innerHTML = '<div class="skel">加载中…</div>';
     countEl.textContent = "";
+    selected.clear();
+    updateBulkBtn();
     try {
       const res = await api("/api/admin/pdf/jobs?limit=500&offset=0");
       if (!res.ok) throw new Error("HTTP " + res.status);
@@ -30,6 +39,9 @@
     const table = el("table", { class: "jobs-table admin-table" });
     const thead = el("thead", null,
       el("tr", null,
+        el("th", { class: "col-check" },
+          el("input", { type: "checkbox", id: "selectAll", onchange: onToggleAll })
+        ),
         el("th", { class: "col-name" }, "文件名"),
         el("th", { class: "col-size" }, "大小"),
         el("th", { class: "col-status" }, "状态"),
@@ -47,7 +59,9 @@
   }
 
   function renderRow(j) {
+    const checkbox = el("input", { type: "checkbox", value: j.id, onchange: () => onToggleRow(j, checkbox, row) });
     const row = el("tr", { class: j.user_deleted ? "row-soft-deleted" : "" },
+      el("td", { class: "col-check" }, checkbox),
       el("td", { class: "col-name" }, j.source_filename),
       el("td", { class: "col-size mono" }, fmtBytes(j.source_size)),
       el("td", { class: "col-status" }, statusCell(j)),
@@ -60,9 +74,39 @@
         el("button", { class: "btn danger", onclick: () => remove(j, row) }, "硬删")
       )
     );
+    // 行元素上缓存 job/checkbox 引用，供全选回调 O(1) 取用
+    row.__job = j;
+    row.__checkbox = checkbox;
     return row;
   }
 
+  function onToggleAll(e) {
+    const checked = e.target.checked;
+    selected.clear();
+    const rows = listEl.querySelectorAll("tbody tr");
+    rows.forEach((row) => {
+      if (row.__checkbox) row.__checkbox.checked = checked;
+      if (checked && row.__job) selected.set(row.__job.id, row);
+    });
+    updateBulkBtn();
+  }
+
+  function onToggleRow(j, box, row) {
+    if (box.checked) selected.set(j.id, row);
+    else selected.delete(j.id);
+    // 同步表头全选框状态
+    const allBoxes = listEl.querySelectorAll('tbody input[type="checkbox"]');
+    const selectAll = document.getElementById("selectAll");
+    if (selectAll) selectAll.checked = allBoxes.length > 0 && [...allBoxes].every((b) => b.checked);
+    updateBulkBtn();
+  }
+
+  function updateBulkBtn() {
+    const n = selected.size;
+    bulkDeleteBtn.disabled = n === 0;
+    selCountEl.textContent = n > 0 ? `(${n})` : "";
+  }
+
   function statusCell(j) {
     if (j.status === "done") return el("span", { class: "tag ok" }, "完成");
     if (j.status === "failed")
@@ -77,21 +121,57 @@
     return el("span", { class: "muted" }, "否");
   }
 
+  // 单条硬删：直接执行，无二次确认
   async function remove(j, row) {
-    if (!confirm(`确定硬删「${j.source_filename}」？\n将真正删除原始文件与产物 PDF（磁盘 + 记录），不可恢复。`)) return;
     try {
       const res = await api(`/api/admin/pdf/jobs/${j.id}`, { method: "DELETE" });
       if (res.status === 404) { toast("任务已不存在"); }
       else if (!res.ok) throw new Error("HTTP " + res.status);
+      selected.delete(j.id);
       row.classList.add("row-removed");
       setTimeout(() => row.remove(), 250);
       toast("已硬删");
-      const m = (countEl.textContent || "").match(/(\d+)/);
+      decCount();
-      if (m) countEl.textContent = `共 ${Math.max(0, Number(m[1]) - 1)} 个任务`;
+      updateBulkBtn();
     } catch (e) {
       toast("删除失败：" + (e.message || e), "err");
     }
   }
 
+  // 批量硬删：并发删除所有选中项，无二次确认
+  async function bulkRemove() {
+    if (!selected.size) return;
+    bulkDeleteBtn.disabled = true;
+    const entries = [...selected.entries()];
+    let ok = 0, fail = 0;
+    await Promise.all(entries.map(async ([id, row]) => {
+      try {
+        const res = await api(`/api/admin/pdf/jobs/${id}`, { method: "DELETE" });
+        if (res.ok || res.status === 404) {
+          selected.delete(id);
+          row.classList.add("row-removed");
+          setTimeout(() => row.remove(), 250);
+          ok++;
+        } else {
+          fail++;
+        }
+      } catch {
+        fail++;
+      }
+    }));
+    selected.clear();
+    if (ok) { decCount(ok); toast(`已硬删 ${ok} 项` + (fail ? `，${fail} 项失败` : "")); }
+    else if (fail) { toast(`批量删除失败（${fail} 项）`, "err"); }
+    // 同步全选框
+    const selectAll = document.getElementById("selectAll");
+    if (selectAll) selectAll.checked = false;
+    updateBulkBtn();
+  }
+
+  function decCount(n = 1) {
+    const m = (countEl.textContent || "").match(/(\d+)/);
+    if (m) countEl.textContent = `共 ${Math.max(0, Number(m[1]) - n)} 个任务`;
+  }
+
   load();
 })();