feat(web): 工单页与升级面板，修掉视图竞态与标签缺失导致的崩溃

- 新增 /w/:wsId/tickets：派给我的 / 我发起的、状态过滤、列表内联快操作
- 详情抽屉按角色显示受理/开工/提交/验收/驳回/改派/取消；任务态底部可升级成工单
- 导航抽成 WorkspaceNav，带未读角标（30 秒对齐，操作后立刻刷新）
- 修竞态：切视图/切 tab 连发请求时，慢的回包会把新结果盖掉（reqId 序号丢弃过期响应）
- 登录支持 ?next= 站内回跳，邀请链接不再'登录完掉回首页'
- e2e/tickets.mjs：双人双上下文的完整闭环，8 项断言全绿

web/src/pages/Tasks.tsx

@@ -1,7 +1,8 @@
-import { useCallback, useEffect, useMemo, useState } from "react";
-import { Link, useParams } from "react-router-dom";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { useParams } from "react-router-dom";
 import { Layout } from "../components/Layout";
 import { TaskDetail } from "../components/TaskDetail";
+import { WorkspaceNav } from "../components/WorkspaceNav";
 import { ApiError, api } from "../lib/client";
 import { PRIORITY_LABEL, STATUS_LABEL, parseQuickAdd } from "../lib/parse";
 import type { Item, ItemStatus, Page } from "../lib/types";
@@ -14,10 +15,10 @@ const VIEWS: { key: string; label: string; hint: string; createAs: ItemStatus }[
   { key: "all", label: "全部", hint: "含已取消", createAs: "todo" },
 ];
 
-const STATUS_STYLE: Record<ItemStatus, string> = {
+const STATUS_STYLE: Record<string, string> = {
   inbox: "bg-ink-100 text-ink-700",
   todo: "bg-ink-100 text-ink-700",
-  doing: "bg-accent/15 text-accent",
+  doing: "bg-accent-500/15 text-accent-600",
   done: "bg-emerald-100 text-emerald-700",
   blocked: "bg-amber-100 text-amber-700",
   canceled: "bg-ink-100 text-ink-500 line-through",
@@ -31,7 +32,7 @@ function dueLabel(iso: string | null): { text: string; overdue: boolean } | null
 }
 
 export function TasksPage() {
-  const { wsId } = useParams<{ wsId: string }>();
+  const { wsId = "" } = useParams<{ wsId: string }>();
   const [view, setView] = useState("today");
   const [items, setItems] = useState<Item[]>([]);
   const [cursor, setCursor] = useState<string | null>(null);
@@ -42,26 +43,32 @@ export function TasksPage() {
   const [error, setError] = useState<string | null>(null);
   const [openId, setOpenId] = useState<string | null>(null);
   const [activeIdx, setActiveIdx] = useState(0);
+  const reqId = useRef(0);
 
   const current = VIEWS.find((v) => v.key === view);
 
   const load = useCallback(
     async (nextCursor?: string | null) => {
       if (!wsId) return;
+      // 换视图/改搜索词会连发多个请求，慢的那个后到会把新结果覆盖掉。
+      // 每次请求记一个号，回来时不是最新号就整包丢弃。
+      const mine = ++reqId.current;
       setLoading(true);
       try {
         const params = new URLSearchParams({ view, limit: "30" });
         if (query.trim()) params.set("q", query.trim());
         if (nextCursor) params.set("cursor", nextCursor);
         const page = await api.get<Page<Item>>(`/workspaces/${wsId}/items?${params}`);
+        if (mine !== reqId.current) return;
         setItems((prev) => (nextCursor ? [...prev, ...page.items] : page.items));
         setCursor(page.next_cursor);
         setHasMore(page.has_more);
         setError(null);
       } catch (err) {
+        if (mine !== reqId.current) return;
         setError(err instanceof ApiError ? err.message : "加载失败");
       } finally {
-        setLoading(false);
+        if (mine === reqId.current) setLoading(false);
       }
     },
     [wsId, view, query],
@@ -147,17 +154,7 @@ export function TasksPage() {
             <span className="ml-2">j/k 选择 · Enter 完成 · e 编辑 · Esc 关闭</span>
           </p>
         </div>
-        <div className="flex items-center gap-3 text-sm">
-          <Link to={`/w/${wsId}/board`} className="text-ink-500 hover:text-ink-900">
-            看板
-          </Link>
-          <Link to={`/w/${wsId}/members`} className="text-ink-500 hover:text-ink-900">
-            成员
-          </Link>
-          <Link to="/" className="text-ink-500 hover:text-ink-900">
-            切换工作区
-          </Link>
-        </div>
+        <WorkspaceNav wsId={wsId} />
       </div>
 
       <div className="mb-4 flex flex-wrap items-center gap-2">