feat: AI 助手模型管理（CRUD、会话绑定、自动化验收）

- Flyway V6：模型表、默认种子、ai_chat_session.model_id 回填
- 管理端 /api/admin/ai/models；用户端选模与新会话绑定
- 禁用模型后会话只读（5009）；chat 按会话 modelCode 调 DashScope
- 前端 AiModels 页、助手模型选择器与 localStorage
- 单测、AiModelManagementApiIT、Playwright E2E；e2e Profile 关闭注解限流
- 技术实施文档与验收报告；移除过期冲突分析文档

Co-authored-by: Cursor <cursoragent@cursor.com>

jog-admin/pom.xml

@@ -61,6 +61,21 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-testcontainers</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>mysql</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>