feat(web): regroup console nav into 7 groups, split downloads/plans/tasks, add legacy redirects

- Sidebar: 概览/资源/订阅/下载/整理/Agent/系统, 18 items (+ 定时任务); single
  active item via findNavItem; 待处理 badge; collapsed rail groups; mobile drawer
  shares NAV_GROUPS.
- New pages: /downloads (queue + cache watermark header), /downloads/plans,
  /downloads/:id, /tasks (business tasks only) + /tasks/:id detail, /rules.
- Legacy links: ?tab= on tasks/subscriptions/sources redirect via clientLoader;
  /tasks/:downloadId falls back to /downloads/:id.
- List filters in URL query; settingsPath() helper for settings deep links.
- Copy per glossary (待处理, 收录策略, 引擎面板, 文件管理, 版本目标).

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/routes/console/rules.tsx

@@ -0,0 +1,38 @@
+import { FilePlus2, Tags } from "lucide-react";
+import { useState } from "react";
+import { Link } from "react-router";
+import { consolePath } from "~/components/console/nav.ts";
+import { PageHeader } from "~/components/console/page-header.tsx";
+import { PolicyWorkspace } from "~/components/library/subscriptions-policy.tsx";
+import { Button } from "~/components/ui/button.tsx";
+
+// 收录策略(REQ §6.5):草案 → 预览 → 发布;偏好标签在 /console/preferences,排序时叠加生效。
+
+export const meta = () => [{ title: "收录策略 · UHD 媒体自动化控制台" }];
+
+export default function RulesPage() {
+  const [creating, setCreating] = useState(false);
+  return (
+    <>
+      <PageHeader
+        title="收录策略"
+        description="草案发布后才生效。回滚会用旧版本内容发布一个新版本。"
+        actions={
+          <>
+            <Button asChild variant="ghost" size="sm">
+              <Link to={consolePath("preferences")}>
+                <Tags />
+                偏好标签
+              </Link>
+            </Button>
+            <Button onClick={() => setCreating(true)}>
+              <FilePlus2 />
+              新建策略草案
+            </Button>
+          </>
+        }
+      />
+      <PolicyWorkspace creating={creating} onCreatingChange={setCreating} />
+    </>
+  );
+}