feat: 集成 KieAI 服务，移除 models-integration 子项目

- 添加 Gemini 2.5 Flash 对话接口（流式+非流式）
- 添加 NanoBanana 图像生成/编辑接口
- 添加 Sora2 视频生成接口（文生视频、图生视频、去水印）
- 移除 models-integration 子项目（功能已迁移至主后端）
- 新增测试文档和 Playwright E2E 配置
- 更新前端页面和 API 接口
- 更新后端配置和日志处理

msh_crmeb_22/crmeb-common/src/main/java/com/zbkj/common/request/kieai/KieAIGeminiChatRequest.java

@@ -0,0 +1,85 @@
+package com.zbkj.common.request.kieai;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.validation.Valid;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+import java.io.Serializable;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * KieAI Gemini 2.5 Flash Chat Completions 请求 DTO
+ * 对应 https://docs.kie.ai/market/gemini/gemini-2.5-flash
+ * +----------------------------------------------------------------------
+ * | Author:ScottPan
+ * +----------------------------------------------------------------------
+ */
+@Data
+@NoArgsConstructor
+@ApiModel(value = "KieAIGeminiChatRequest", description = "Gemini 2.5 Flash Chat Completions 请求")
+public class KieAIGeminiChatRequest implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @Valid
+    @NotEmpty(message = "messages不能为空")
+    @ApiModelProperty(value = "消息列表", required = true)
+    private List<Message> messages;
+
+    @ApiModelProperty(value = "是否流式返回", example = "false")
+    private Boolean stream;
+
+    @ApiModelProperty(value = "工具定义（如 googleSearch 或 function calling），与 response_format 互斥")
+    private List<Map<String, Object>> tools;
+
+    @ApiModelProperty(value = "是否在响应中包含思考过程", example = "true")
+    private Boolean includeThoughts;
+
+    @ApiModelProperty(value = "响应格式 JSON Schema，与 function calling 互斥")
+    private Map<String, Object> responseFormat;
+
+    @Data
+    @NoArgsConstructor
+    @ApiModel(value = "Message", description = "单条消息")
+    public static class Message implements Serializable {
+        private static final long serialVersionUID = 1L;
+
+        @ApiModelProperty(value = "角色: developer, system, user, assistant, tool")
+        private String role;
+
+        @NotNull(message = "content不能为空")
+        @ApiModelProperty(value = "内容：字符串或多模态数组 [{type,text} | {type,image_url}]", required = true)
+        private Object content;
+    }
+
+    @Data
+    @NoArgsConstructor
+    @ApiModel(value = "ContentItem", description = "多模态内容项")
+    public static class ContentItem implements Serializable {
+        private static final long serialVersionUID = 1L;
+
+        @ApiModelProperty(value = "类型: text | image_url")
+        private String type;
+
+        @ApiModelProperty(value = "文本内容（type=text 时使用）")
+        private String text;
+
+        @ApiModelProperty(value = "图片 URL（type=image_url 时使用）")
+        private ImageUrl imageUrl;
+    }
+
+    @Data
+    @NoArgsConstructor
+    @ApiModel(value = "ImageUrl", description = "图片 URL")
+    public static class ImageUrl implements Serializable {
+        private static final long serialVersionUID = 1L;
+
+        @ApiModelProperty(value = "图片地址")
+        private String url;
+    }
+}