修正i3-3代SKU总成本计算错误并清理验证图片

- 修正3个i3-3代SKU文件总成本与配件之和不一致的问题：i3-3代-4G-32G总成本221.5->236.5，i3-3代-4G-64G总成本236.5->251.5，i3-3代-8G-64G总成本313.5->298.5

- 删除售价验证临时图片，新增nascab产品和2.5金单有产品目录

产品/nascab/详情/doubao_image.py

@@ -0,0 +1,70 @@
+# -*- coding: utf-8 -*-
+"""豆包万相 (Doubao Seedream) 图片生成工具 - 支持文生图/图生图"""
+import sys
+import os
+import json
+import base64
+import urllib.request
+import urllib.error
+
+API_URL = "https://ark.cn-beijing.volces.com/api/v3/images/generations"
+API_KEY = "ark-119a37ed-f123-42fc-aea6-b38d47d47fc0-f7ddf"
+MODEL = "doubao-seedream-5-0-260128"
+
+
+def generate(prompt, input_image=None, output_path="output.png", size="2k"):
+    """生成图片。input_image 为本地路径时走图生图，否则文生图。"""
+    body = {
+        "model": MODEL,
+        "prompt": prompt,
+        "size": size,
+        "sequential_image_generation": "disabled",
+        "response_format": "url",
+        "stream": False,
+        "watermark": False,
+    }
+
+    if input_image and os.path.exists(input_image):
+        with open(input_image, "rb") as f:
+            img_b64 = base64.b64encode(f.read()).decode("ascii")
+        ext = os.path.splitext(input_image)[1].lower().lstrip(".")
+        mime = "jpeg" if ext in ("jpg", "jpeg") else ("png" if ext == "png" else "octet-stream")
+        body["image"] = [f"data:image/{mime};base64,{img_b64}"]
+
+    data = json.dumps(body).encode("utf-8")
+    req = urllib.request.Request(
+        API_URL,
+        data=data,
+        headers={
+            "Content-Type": "application/json",
+            "Authorization": f"Bearer {API_KEY}",
+        },
+        method="POST",
+    )
+
+    try:
+        with urllib.request.urlopen(req, timeout=180) as resp:
+            result = json.loads(resp.read().decode("utf-8"))
+    except urllib.error.HTTPError as e:
+        err_body = e.read().decode("utf-8", errors="replace")
+        print(f"HTTP {e.code}: {err_body}", file=sys.stderr)
+        sys.exit(1)
+
+    image_url = result["data"][0]["url"]
+    print(f"Generated URL: {image_url}")
+
+    # 下载图片
+    urllib.request.urlretrieve(image_url, output_path)
+    print(f"Saved to: {output_path}")
+
+
+if __name__ == "__main__":
+    # 用法: python doubao_image.py <prompt> <output_path> [input_image] [size]
+    if len(sys.argv) < 3:
+        print("Usage: python doubao_image.py <prompt> <output_path> [input_image] [size]")
+        sys.exit(1)
+    prompt = sys.argv[1]
+    output_path = sys.argv[2]
+    input_image = sys.argv[3] if len(sys.argv) > 3 else None
+    size = sys.argv[4] if len(sys.argv) > 4 else "2k"
+    generate(prompt, input_image, output_path, size)