feat: AI 场景路由、ASR 服务及前后端全链路同步

- 新增 AI 场景路由控制器和管理接口
- 新增 ASR 语音识别服务及前后端集成
- 同步 AI Runtime 客户端到 Web/小程序/Life-Script
- 完善 AI 配置测试修复和管理后台路由配置
- 新增数据库迁移脚本

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend-single/src/main/java/com/emotion/entity/AiProvider.java

@@ -0,0 +1,49 @@
+package com.emotion.entity;
+
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableName;
+import com.emotion.common.BaseEntity;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import lombok.experimental.SuperBuilder;
+
+@Data
+@EqualsAndHashCode(callSuper = true)
+@SuperBuilder
+@NoArgsConstructor
+@AllArgsConstructor
+@TableName("t_ai_provider")
+public class AiProvider extends BaseEntity {
+
+    @TableField("provider_code")
+    private String providerCode;
+
+    @TableField("provider_name")
+    private String providerName;
+
+    @TableField("provider_type")
+    private String providerType;
+
+    @TableField("base_url")
+    private String baseUrl;
+
+    @TableField("api_key")
+    private String apiKey;
+
+    @TableField("auth_type")
+    private String authType;
+
+    @TableField("default_headers")
+    private String defaultHeaders;
+
+    @TableField("timeout_ms")
+    private Integer timeoutMs;
+
+    @TableField("is_enabled")
+    private Integer isEnabled;
+
+    @TableField("description")
+    private String description;
+}