feat: BossAi 老板AI助手初始版本

包含功能:
- 法务参谋/经营决策/生活助理/情绪中心四大AI对话模块
- 专家咨询系统(用户选定→专家确认→咨询→回复→评价)
- 角色登录(用户/专家/管理员)+ ProtectedRoute 权限控制
- 管理后台(用户管理/专家管理/AI使用统计/专家活跃度)
- 专家工作台(待确认服务/待回复咨询/已回复咨询/服务中用户)
- 服务关系取消(用户和专家均可取消,需自己确认)
- 全页面移动端响应式适配
- 知识库RAG检索
- 对话历史(普通/保密模式)

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

test_bossai.py

@@ -0,0 +1,43 @@
+import unittest
+from datetime import datetime, timedelta, timezone
+
+from bossai import SessionManager, assess
+
+
+class Clock:
+    def __init__(self):
+        self.now = datetime(2026, 1, 1, tzinfo=timezone.utc)
+    def __call__(self):
+        return self.now
+
+
+class BossAiMVPTests(unittest.TestCase):
+    def setUp(self):
+        self.clock = Clock()
+        self.manager = SessionManager(self.clock)
+
+    def test_ephemeral_session_is_destroyed_and_unreadable(self):
+        s = self.manager.create("ephemeral", ttl=timedelta(seconds=30))
+        self.manager.append(s.session_id, "user", "家庭隐私")
+        self.clock.now += timedelta(seconds=31)
+        self.assertEqual(self.manager.purge_expired(), 1)
+        self.assertTrue(s.destroyed)
+        self.assertEqual(s.messages, [])
+        with self.assertRaises(KeyError):
+            self.manager.append(s.session_id, "user", "再次写入")
+
+    def test_manual_destroy_is_idempotent(self):
+        s = self.manager.create("confidential")
+        self.manager.append(s.session_id, "user", "合同")
+        self.assertTrue(self.manager.destroy(s.session_id))
+        self.assertFalse(self.manager.destroy(s.session_id))
+        self.assertEqual(s.key_digest, "")
+
+    def test_risk_triage_escalates_red_and_orange(self):
+        self.assertEqual(assess("收到税务稽查通知").level, "red")
+        self.assertTrue(assess("员工工伤后能否开除").escalation)
+        self.assertEqual(assess("如何安排下周会议").level, "green")
+
+
+if __name__ == "__main__":
+    unittest.main()