docs(uiux): UIUX 设计方案大改 + 5 份作业指导书对齐 + 开发任务文档

- UIUX 文档：填充 19 个缺口（多主体画像/健康度/AI+看板/增长域/洞察域/创始人端/OODA/助推/商密）
- UIUX 文档：插入 6 个新章节（十四~十九），旧章节重编号为二十~三十一，更新目录和交叉引用
- 作业指导书 x5：导航改为 6 域分组，新增 Context Bar/工作模式/Insight Rail/决策线程/多工作区等 UI 概念
- 新建 docs/2-task-uiux.md：50 个代码落地开发任务，按 P0-P6 分优先级 + 8 Sprint 规划
- 后端/前端：大量新增模型、路由、组件（来自之前 Phase 开发）

backend/tests/test_profiles.py

@@ -0,0 +1,82 @@
+"""T2.8 多主体画像 API 测试。
+
+测试投资机构、基金、投资经理画像的 CRUD 和关联查询。
+"""
+
+import pytest
+from fastapi.testclient import TestClient
+
+
+@pytest.fixture
+def auth_headers(client: TestClient):
+    """注册并登录，返回认证头。"""
+    client.post(
+        "/api/v1/auth/register",
+        json={
+            "email": "profile_test@example.com",
+            "password": "password123",
+            "name": "画像测试用户",
+            "tenant_name": "画像测试机构",
+            "role": "investor",
+        },
+    )
+    resp = client.post(
+        "/api/v1/auth/login",
+        json={"email": "profile_test@example.com", "password": "password123"},
+    )
+    token = resp.json()["data"]["access_token"]
+    return {"Authorization": f"Bearer {token}"}
+
+
+class TestFirmProfile:
+    """投资机构画像测试。"""
+
+    def test_list_firms_empty(self, client: TestClient, auth_headers: dict):
+        """空列表查询。"""
+        resp = client.get("/api/v1/profiles/firms", headers=auth_headers)
+        assert resp.status_code == 200
+        assert resp.json()["code"] == 0
+        assert resp.json()["data"] == []
+
+    def test_create_firm(self, client: TestClient, auth_headers: dict):
+        """创建投资机构画像。"""
+        resp = client.post(
+            "/api/v1/profiles/firms",
+            json={"name": "测试投资机构", "focus_areas": ["AI", "SaaS"], "stage_preference": "early"},
+            headers=auth_headers,
+        )
+        assert resp.status_code == 201
+        assert resp.json()["code"] == 0
+
+    def test_list_firms_after_create(self, client: TestClient, auth_headers: dict):
+        """创建后查询列表。"""
+        client.post(
+            "/api/v1/profiles/firms",
+            json={"name": "查询测试机构"},
+            headers=auth_headers,
+        )
+        resp = client.get("/api/v1/profiles/firms", headers=auth_headers)
+        assert resp.status_code == 200
+        data = resp.json()["data"]
+        assert len(data) >= 1
+
+    def test_no_auth(self, client: TestClient):
+        """无认证返回 401。"""
+        resp = client.get("/api/v1/profiles/firms")
+        assert resp.status_code == 401
+
+
+class TestFundAndManager:
+    """基金和投资经理测试。"""
+
+    def test_list_funds(self, client: TestClient, auth_headers: dict):
+        """查询基金列表。"""
+        resp = client.get("/api/v1/profiles/funds", headers=auth_headers)
+        assert resp.status_code == 200
+        assert resp.json()["code"] == 0
+
+    def test_list_managers(self, client: TestClient, auth_headers: dict):
+        """查询投资经理列表。"""
+        resp = client.get("/api/v1/profiles/managers", headers=auth_headers)
+        assert resp.status_code == 200
+        assert resp.json()["code"] == 0