feat(frontend): P0 导航架构重构 — 6 业务域 + 角色化排序 + 新路由

- 投资人 Sidebar: 5 扁平分组 → 6 业务域（今日/组合/工作/增长/洞察/报告）
- 角色化导航: GP→组合优先, 投后负责人→今日优先, 投资经理→今日+组合
- 新增路由: /today /compare /threads /threads/[id] /workspace
- Admin: 单页标签 → 6 管理域 Sidebar（租户/用户/审计/数据源/安全/设置）
- 创始人: 3 底部导航 → 6 域（今日/经营/月报/Copilot/通知/我的）
- 新增 navConfig.ts 统一管理导航配置

frontend/src/app/(investor)/compare/page.tsx

@@ -0,0 +1,48 @@
+/** 多企业对比工作区 — 2-5 家企业并排对比。 */
+
+import { GitCompareArrows } from "lucide-react";
+
+/** 多企业对比页面。 */
+export default function ComparePage() {
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center gap-2">
+        <GitCompareArrows className="text-[var(--investor-primary)]" size={24} />
+        <h1 className="text-2xl font-bold">多企业对比</h1>
+      </div>
+
+      <div className="rounded-lg border bg-white p-4 shadow-sm">
+        <p className="text-sm text-muted-foreground">
+          选择 2-5 家企业进行并排对比，支持指标选择、差异高亮和趋势对比。
+        </p>
+      </div>
+
+      {/* 对比卡片占位 */}
+      <div className="grid grid-cols-1 gap-4 md:grid-cols-3">
+        {["智链科技", "云栈数据", "深瞳智能"].map((name) => (
+          <div key={name} className="rounded-lg border bg-white p-4 shadow-sm">
+            <h3 className="mb-3 font-medium">{name}</h3>
+            <div className="space-y-2 text-sm">
+              <div className="flex justify-between">
+                <span className="text-muted-foreground">健康度</span>
+                <span className="font-medium">78.5</span>
+              </div>
+              <div className="flex justify-between">
+                <span className="text-muted-foreground">月营收</span>
+                <span className="font-medium">800万</span>
+              </div>
+              <div className="flex justify-between">
+                <span className="text-muted-foreground">Runway</span>
+                <span className="font-medium">12月</span>
+              </div>
+              <div className="flex justify-between">
+                <span className="text-muted-foreground">高风险</span>
+                <span className="font-medium">0</span>
+              </div>
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}

frontend/src/app/(investor)/layout.tsx

@@ -1,90 +1,76 @@
 /** 投资人端布局 — B 端专业风格：左 Sidebar + 灰色内容区 + AI Copilot。 */
 
-import {
-  LayoutDashboard, Building2, FileText, AlertTriangle, Settings,
-  Receipt, ScrollText, Users, Lightbulb, Target, GitBranch,
-  TrendingUp, Network, ShieldCheck, Bot, BookOpen, BarChart3,
-} from "lucide-react";
+"use client";
+
 import Link from "next/link";
+import { usePathname } from "next/navigation";
+import { useMemo } from "react";
 import { CopilotWidget } from "@/components/shared/CopilotWidget";
 import { RiskToastNotifier } from "@/components/shared/RiskToastNotifier";
 import { AuthGuard } from "@/components/shared/AuthGuard";
+import { useAuth } from "@/lib/auth-context";
+import { getNavDomains, NAV_FOOTER } from "@/lib/navConfig";
 
-const navSections = [
-  {
-    title: "核心功能",
-    items: [
-      { href: "/dashboard", label: "驾驶舱", icon: LayoutDashboard },
-      { href: "/companies", label: "企业档案", icon: Building2 },
-      { href: "/reports", label: "月报管理", icon: FileText },
-      { href: "/risks", label: "风险工作台", icon: AlertTriangle },
-    ],
-  },
-  {
-    title: "投后管理",
-    items: [
-      { href: "/financial", label: "财务校验", icon: Receipt },
-      { href: "/agreements", label: "协议监控", icon: ScrollText },
-      { href: "/board", label: "董事会", icon: Users },
-      { href: "/weak-signals", label: "弱信号", icon: Lightbulb },
-      { href: "/sentinels", label: "决策前哨", icon: Target },
-      { href: "/events", label: "重大事项", icon: AlertTriangle },
-    ],
-  },
-  {
-    title: "增值服务",
-    items: [
-      { href: "/synergies", label: "协同中心", icon: Network },
-      { href: "/innovation", label: "组合创新", icon: Lightbulb },
-      { href: "/talents", label: "人才引力场", icon: Users },
-      { href: "/okrs", label: "OKR", icon: Target },
-      { href: "/milestones", label: "里程碑", icon: GitBranch },
-      { href: "/tasks", label: "任务看板", icon: BarChart3 },
-    ],
-  },
-  {
-    title: "高级分析",
-    items: [
-      { href: "/alpha", label: "Alpha 归因", icon: TrendingUp },
-      { href: "/exit-signals", label: "退出信号", icon: TrendingUp },
-      { href: "/portfolio", label: "组合管理", icon: BarChart3 },
-      { href: "/digital-twins", label: "数字孪生", icon: Bot },
-      { href: "/knowledge-graph", label: "知识图谱", icon: Network },
-      { href: "/aars", label: "AAR 复盘", icon: BookOpen },
-      { href: "/pre-mortems", label: "Pre-mortem", icon: ShieldCheck },
-      { href: "/agents", label: "Agent 监控", icon: Bot },
-    ],
-  },
-  {
-    title: "系统",
-    items: [
-      { href: "/settings", label: "设置", icon: Settings },
-    ],
-  },
-];
-
+/**
+ * 投资人端布局组件。
+ *
+ * 左侧 Sidebar 按 6 业务域分组，域顺序根据用户角色动态排序。
+ */
 export default function InvestorLayout({ children }: { children: React.ReactNode }) {
+  const { user } = useAuth();
+  const pathname = usePathname();
+
+  const domains = useMemo(() => getNavDomains(user?.role ?? "investor"), [user?.role]);
+
   return (
     <div className="flex min-h-screen">
       {/* 左侧 Sidebar */}
       <aside className="sticky top-0 hidden h-screen w-52 shrink-0 bg-[var(--investor-sidebar-bg)] text-white md:block">
         <div className="flex h-14 items-center px-4 font-bold">AIPortPilot</div>
-        <nav className="flex flex-col gap-1 overflow-y-auto px-3 py-2">
-          {navSections.map((section) => (
-            <div key={section.title} className="mb-2">
-              <div className="px-3 py-1 text-xs font-medium text-white/40">{section.title}</div>
-              {section.items.map((item) => (
+        <nav className="flex flex-col gap-1 overflow-y-auto px-3 py-2" style={{ maxHeight: "calc(100vh - 3.5rem)" }}>
+          {domains.map((domain) => (
+            <div key={domain.key} className="mb-2">
+              <div className="px-3 py-1 text-xs font-medium text-white/40">{domain.title}</div>
+              {domain.items.map((item) => {
+                const isActive = pathname === item.href || pathname.startsWith(item.href + "/");
+                return (
+                  <Link
+                    key={item.href}
+                    href={item.href}
+                    className={`flex items-center gap-2 rounded-md px-3 py-2 text-sm transition-colors ${
+                      isActive
+                        ? "bg-white/15 text-white"
+                        : "text-white/70 hover:bg-white/10 hover:text-white"
+                    }`}
+                  >
+                    <item.icon size={16} aria-hidden="true" />
+                    {item.label}
+                  </Link>
+                );
+              })}
+            </div>
+          ))}
+
+          {/* 底部固定 */}
+          <div className="mt-auto border-t border-white/10 pt-2">
+            {NAV_FOOTER.map((item) => {
+              const isActive = pathname === item.href;
+              return (
                 <Link
                   key={item.href}
                   href={item.href}
-                  className="flex items-center gap-2 rounded-md px-3 py-2 text-sm text-white/70 transition-colors hover:bg-white/10 hover:text-white"
+                  className={`flex items-center gap-2 rounded-md px-3 py-2 text-sm transition-colors ${
+                    isActive
+                      ? "bg-white/15 text-white"
+                      : "text-white/70 hover:bg-white/10 hover:text-white"
+                  }`}
                 >
                   <item.icon size={16} aria-hidden="true" />
                   {item.label}
                 </Link>
-              ))}
-            </div>
-          ))}
+              );
+            })}
+          </div>
         </nav>
       </aside>
 

frontend/src/app/(investor)/threads/[id]/page.tsx

@@ -0,0 +1,52 @@
+/** 决策线程详情页 — 状态机时间线 + 关联事件 + AAR 链接。 */
+
+import { GitBranch, ArrowLeft } from "lucide-react";
+import Link from "next/link";
+
+/** 决策线程详情页面。 */
+export default function ThreadDetailPage({ params }: { params: { id: string } }) {
+  return (
+    <div className="space-y-6">
+      <Link href="/threads" className="flex items-center gap-1 text-sm text-muted-foreground hover:text-foreground">
+        <ArrowLeft size={16} />
+        返回线程列表
+      </Link>
+
+      <div className="flex items-center gap-2">
+        <GitBranch className="text-[var(--investor-primary)]" size={24} />
+        <h1 className="text-2xl font-bold">决策线程详情</h1>
+      </div>
+
+      <div className="rounded-lg border bg-white p-4 shadow-sm">
+        <div className="mb-4 flex items-center justify-between">
+          <h2 className="text-lg font-medium">线程 #{params.id}</h2>
+          <span className="rounded-full bg-indigo-50 px-3 py-1 text-xs text-indigo-600">分析中</span>
+        </div>
+        <p className="text-sm text-muted-foreground">
+          状态机时间线、关联事件和 AAR 链接将在 P1 #17 组件完成后集成。
+        </p>
+      </div>
+
+      {/* 时间线占位 */}
+      <div className="rounded-lg border bg-white p-4 shadow-sm">
+        <h3 className="mb-4 font-medium">状态机时间线</h3>
+        <div className="space-y-4">
+          {[
+            { label: "已识别", date: "2026-07-09", active: true },
+            { label: "分析中", date: "2026-07-12", active: true },
+            { label: "已行动", date: "—", active: false },
+            { label: "已关闭", date: "—", active: false },
+          ].map((step, i) => (
+            <div key={i} className="flex items-center gap-3">
+              <div className={`h-3 w-3 rounded-full ${step.active ? "bg-indigo-500" : "bg-gray-300"}`} />
+              <span className={`text-sm ${step.active ? "font-medium" : "text-muted-foreground"}`}>
+                {step.label}
+              </span>
+              <span className="text-xs text-muted-foreground">{step.date}</span>
+            </div>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/app/(investor)/threads/page.tsx

@@ -0,0 +1,42 @@
+/** 决策线程列表页 — 按状态/企业筛选 + 线程卡片。 */
+
+import { GitBranch } from "lucide-react";
+
+/** 决策线程列表页面。 */
+export default function ThreadsPage() {
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center gap-2">
+        <GitBranch className="text-[var(--investor-primary)]" size={24} />
+        <h1 className="text-2xl font-bold">决策线程</h1>
+      </div>
+
+      <div className="rounded-lg border bg-white p-4 shadow-sm">
+        <p className="text-sm text-muted-foreground">
+          决策线程将风险、建议、任务串联为可追踪的决策链路，支持状态机驱动的时间线视图。
+        </p>
+      </div>
+
+      {/* 线程卡片占位 */}
+      <div className="space-y-3">
+        {[
+          { title: "云栈数据 A+轮融资时机选择", status: "分析中", company: "云栈数据" },
+          { title: "深瞳智能 CTO retention 策略", status: "已识别", company: "深瞳智能" },
+          { title: "量子芯微 融资策略：天使+ vs Pre-A", status: "已行动", company: "量子芯微" },
+        ].map((thread) => (
+          <div key={thread.title} className="rounded-lg border bg-white p-4 shadow-sm">
+            <div className="flex items-center justify-between">
+              <div>
+                <h3 className="font-medium">{thread.title}</h3>
+                <p className="mt-1 text-sm text-muted-foreground">{thread.company}</p>
+              </div>
+              <span className="rounded-full bg-indigo-50 px-3 py-1 text-xs text-indigo-600">
+                {thread.status}
+              </span>
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}

frontend/src/app/(investor)/today/page.tsx

@@ -0,0 +1,110 @@
+/** 今日行动中心 — 投后负责人/投资经理默认首页。 */
+
+import { CalendarClock, AlertTriangle, FileText, ListTodo, TrendingUp } from "lucide-react";
+
+/** 今日行动中心页面。 */
+export default function TodayPage() {
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center gap-2">
+        <CalendarClock className="text-[var(--investor-primary)]" size={24} />
+        <h1 className="text-2xl font-bold">今日行动中心</h1>
+      </div>
+
+      {/* AI 简报 */}
+      <div className="rounded-lg border bg-white p-4 shadow-sm">
+        <h2 className="mb-2 text-sm font-medium text-muted-foreground">AI 简报</h2>
+        <p className="text-sm text-gray-700">
+          今日有 3 条待处理风险、2 份月报待审阅、5 个任务待完成。量子芯微现金 Runway 不足 7 月，需紧急关注。
+        </p>
+      </div>
+
+      {/* 四象限概览 */}
+      <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
+        <div className="rounded-lg border bg-white p-4 shadow-sm">
+          <div className="mb-3 flex items-center gap-2">
+            <AlertTriangle className="text-amber-500" size={18} />
+            <h3 className="font-medium">风险队列</h3>
+          </div>
+          <div className="space-y-2">
+            <div className="flex items-center justify-between rounded bg-red-50 px-3 py-2 text-sm">
+              <span>量子芯微 — 现金Runway不足7月</span>
+              <span className="text-red-600">紧急</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-amber-50 px-3 py-2 text-sm">
+              <span>云栈数据 — 营收增长停滞</span>
+              <span className="text-amber-600">高</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-blue-50 px-3 py-2 text-sm">
+              <span>智链科技 — 客户流失率上升</span>
+              <span className="text-blue-600">中</span>
+            </div>
+          </div>
+        </div>
+
+        <div className="rounded-lg border bg-white p-4 shadow-sm">
+          <div className="mb-3 flex items-center gap-2">
+            <FileText className="text-blue-500" size={18} />
+            <h3 className="font-medium">月报状态</h3>
+          </div>
+          <div className="space-y-2">
+            <div className="flex items-center justify-between rounded bg-green-50 px-3 py-2 text-sm">
+              <span>智链科技 — 已提交</span>
+              <span className="text-green-600">AI 解析完成</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-green-50 px-3 py-2 text-sm">
+              <span>深瞳智能 — 已审阅</span>
+              <span className="text-green-600">完成</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-amber-50 px-3 py-2 text-sm">
+              <span>量子芯微 — 草稿中</span>
+              <span className="text-amber-600">待提交</span>
+            </div>
+          </div>
+        </div>
+
+        <div className="rounded-lg border bg-white p-4 shadow-sm">
+          <div className="mb-3 flex items-center gap-2">
+            <ListTodo className="text-indigo-500" size={18} />
+            <h3 className="font-medium">任务概览</h3>
+          </div>
+          <div className="space-y-2">
+            <div className="flex items-center justify-between rounded bg-indigo-50 px-3 py-2 text-sm">
+              <span>联系流失客户进行回访</span>
+              <span className="text-indigo-600">进行中</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-gray-50 px-3 py-2 text-sm">
+              <span>准备天使+轮 BP</span>
+              <span className="text-gray-600">待办</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-green-50 px-3 py-2 text-sm">
+              <span>审阅智链科技月报</span>
+              <span className="text-green-600">已完成</span>
+            </div>
+          </div>
+        </div>
+
+        <div className="rounded-lg border bg-white p-4 shadow-sm">
+          <div className="mb-3 flex items-center gap-2">
+            <TrendingUp className="text-emerald-500" size={18} />
+            <h3 className="font-medium">健康度变化</h3>
+          </div>
+          <div className="space-y-2">
+            <div className="flex items-center justify-between rounded bg-green-50 px-3 py-2 text-sm">
+              <span>智链科技 78.5 ↑</span>
+              <span className="text-green-600">+2.3</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-red-50 px-3 py-2 text-sm">
+              <span>量子芯微 48.0 ↓</span>
+              <span className="text-red-600">-5.0</span>
+            </div>
+            <div className="flex items-center justify-between rounded bg-gray-50 px-3 py-2 text-sm">
+              <span>云栈数据 62.0 →</span>
+              <span className="text-gray-600">持平</span>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/app/(investor)/workspace/page.tsx

@@ -0,0 +1,22 @@
+/** 通用工作区 — URL 参数驱动，支持多 Tab 独立上下文。 */
+
+import { Layers } from "lucide-react";
+
+/** 通用工作区页面。 */
+export default function WorkspacePage() {
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center gap-2">
+        <Layers className="text-[var(--investor-primary)]" size={24} />
+        <h1 className="text-2xl font-bold">工作区</h1>
+      </div>
+
+      <div className="rounded-lg border bg-white p-4 shadow-sm">
+        <p className="text-sm text-muted-foreground">
+          通用工作区支持多 Tab 独立上下文，最多 8 个 Tab，由 URL 参数驱动。
+          将在 P1 #18 Multi-Workspace Tab 管理器完成后集成。
+        </p>
+      </div>
+    </div>
+  );
+}