fix: 删除 generators.py 中 generate_image_report 里冗余的本地文件读取逻辑

src/infrastructure/reporting/generators.py

@@ -127,55 +127,6 @@ class ReportGenerator(IReportGenerator):
                             # Fallback: 如果返回的是字符串（可能是URL或路径）
                             logger.info(f"图片生成成功 (String): {image_data}")
 
-                            # 尝试读取文件转 Base64 (解决 Docker 路径不可达问题)
-                            if not image_data.startswith(("http://", "https://")):
-                                try:
-                                    import os
-
-                                    if os.path.exists(image_data):
-                                        with open(image_data, "rb") as f:
-                                            file_bytes = f.read()
-
-                                        # 校验是否为有效图片 (防止发送 "Internal Server Error" 文本)
-                                        is_valid_image = False
-                                        if file_bytes.startswith(b"\xff\xd8"):  # JPEG
-                                            is_valid_image = True
-                                        elif file_bytes.startswith(
-                                            b"\x89PNG\r\n\x1a\n"
-                                        ):  # PNG
-                                            is_valid_image = True
-
-                                        if not is_valid_image:
-                                            try:
-                                                text_content = file_bytes.decode(
-                                                    "utf-8"
-                                                )
-                                                if (
-                                                    "Error" in text_content
-                                                    or "Exception" in text_content
-                                                ):
-                                                    logger.error(
-                                                        f"渲染器生成了错误文件而非图片: {text_content[:200]}"
-                                                    )
-                                                    return None, html_content
-                                            except Exception:
-                                                pass
-                                            logger.warning(
-                                                f"生成的图片文件头异常 (非JPEG/PNG): {file_bytes[:10].hex()}"
-                                            )
-                                            return None, html_content
-
-                                        b64 = base64.b64encode(file_bytes).decode(
-                                            "utf-8"
-                                        )
-                                        image_url = f"base64://{b64}"
-                                        logger.info(
-                                            f"本地图片转 Base64 成功: {len(file_bytes)} bytes"
-                                        )
-                                        return image_url, html_content
-                                except Exception as e:
-                                    logger.warning(f"尝试读取本地图片失败: {e}")
-
                             return image_data, html_content
 
                     logger.warning(f"渲染策略 {image_options} 返回空数据")