feat: 模板管理页（列表、分组、详情）

renderer/src/pages/TemplateList.jsx

@@ -1 +1,112 @@
-export default function TemplateList() { return <div>TemplateList</div>; }
+import React, { useEffect, useState } from "react";
+import { useNavigate } from "react-router-dom";
+
+export default function TemplateList() {
+  const [templates, setTemplates] = useState([]);
+  const [selected, setSelected] = useState(null);
+  const navigate = useNavigate();
+
+  useEffect(() => {
+    window.api.listTemplates().then(setTemplates);
+  }, []);
+
+  async function handleDelete(id) {
+    if (!confirm("确认删除此模板？")) return;
+    await window.api.deleteTemplate(id);
+    setTemplates((prev) => prev.filter((t) => t.id !== id));
+    if (selected?.id === id) setSelected(null);
+  }
+
+  const groups = [...new Set(templates.map((t) => t.grp || "未分组"))];
+
+  return (
+    <div className="flex h-screen bg-gray-50">
+      {/* 左侧模板列表 */}
+      <aside className="w-72 bg-white border-r flex flex-col">
+        <div className="p-4 border-b flex gap-2">
+          <button
+            onClick={() => navigate("/templates/new")}
+            className="flex-1 bg-blue-600 text-white rounded px-3 py-2 text-sm hover:bg-blue-700"
+          >
+            + 新建模板
+          </button>
+        </div>
+        <div className="flex-1 overflow-y-auto p-2">
+          {groups.map((grp) => (
+            <div key={grp} className="mb-4">
+              <div className="text-xs text-gray-400 font-semibold px-2 py-1 uppercase">{grp}</div>
+              {templates
+                .filter((t) => (t.grp || "未分组") === grp)
+                .map((t) => (
+                  <div
+                    key={t.id}
+                    onClick={() => setSelected(t)}
+                    className={`flex items-center justify-between rounded px-3 py-2 cursor-pointer text-sm ${
+                      selected?.id === t.id ? "bg-blue-50 text-blue-700" : "hover:bg-gray-100"
+                    }`}
+                  >
+                    <span className="truncate">{t.name}</span>
+                    <button
+                      onClick={(e) => { e.stopPropagation(); handleDelete(t.id); }}
+                      className="text-gray-300 hover:text-red-500 ml-2 text-xs"
+                    >
+                      删除
+                    </button>
+                  </div>
+                ))}
+            </div>
+          ))}
+        </div>
+      </aside>
+
+      {/* 右侧详情 */}
+      <main className="flex-1 p-8">
+        {selected ? (
+          <div>
+            <div className="flex items-center justify-between mb-6">
+              <h1 className="text-2xl font-bold">{selected.name}</h1>
+              <div className="flex gap-2">
+                <button
+                  onClick={() => navigate(`/templates/${selected.id}/edit`)}
+                  className="border rounded px-4 py-2 text-sm hover:bg-gray-100"
+                >
+                  编辑字段映射
+                </button>
+                <button
+                  onClick={() => navigate("/generate", { state: { templateId: selected.id } })}
+                  className="bg-blue-600 text-white rounded px-4 py-2 text-sm hover:bg-blue-700"
+                >
+                  批量生成
+                </button>
+              </div>
+            </div>
+            <div className="bg-white rounded-lg border p-6 space-y-3 text-sm text-gray-600">
+              <p><span className="font-medium text-gray-800">分组：</span>{selected.grp || "未分组"}</p>
+              <p><span className="font-medium text-gray-800">字段数量：</span>{selected.fields?.length ?? 0}</p>
+              <p><span className="font-medium text-gray-800">创建时间：</span>{new Date(selected.created_at).toLocaleString("zh-CN")}</p>
+              <p><span className="font-medium text-gray-800">最后修改：</span>{new Date(selected.updated_at).toLocaleString("zh-CN")}</p>
+              {selected.fields?.length > 0 && (
+                <div>
+                  <p className="font-medium text-gray-800 mb-2">字段列表：</p>
+                  <div className="space-y-1">
+                    {selected.fields.map((f) => (
+                      <div key={f.id} className="flex gap-4 bg-gray-50 rounded px-3 py-1">
+                        <span className="font-mono text-blue-600">{"{{"}{f.name}{"}}"}</span>
+                        <span className="text-gray-400">{f.type}</span>
+                        <span>{f.sheet} · {f.cell}</span>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              )}
+            </div>
+          </div>
+        ) : (
+          <div className="h-full flex items-center justify-center text-gray-400">
+            <p>选择一个模板，或新建模板</p>
+          </div>
+        )}
+      </main>
+    </div>
+  );
+}