v92-v105 多国适配 + 模板导出增强 + 生图可靠性优化

- 新增韩国（KR）适配：countries/pinterest 种子词、K-pop 提示词、UI 国家列表
- 爬虫跨运行持久化已采集 URL（.collected_urls.json），同关键词重复搜索采新图
- 模板导出增强：SPU 商品属性列名前缀剥离匹配、尺码下拉框 INDIRECT 动态引用、
  SPU 字段映射（袖长/门襟/胸垫等）、季节/印花图案女装映射、建议售价统一必填、
  SKU 分类/数量/单位直接填默认值
- 自定义模式：多模态提示词独立（custom_analyze_*）、生图提示词模板可配置
- Pinterest：空选品守卫、连续空分析保护（max_empty_analyze）、flat_prompt 配置覆盖
- 生图可靠性：开始/完成进度日志、异步任务轮询超时 60s→300s

prompts/pinterest_analyze_system.md

@@ -42,9 +42,5 @@ image_prompt = two parts:
  NEVER mention shirts, apparel, models, scenes, sizes, backgrounds or
  watermarks — placement is handled externally.
 
-negative_prompt: copy of reference artwork, likenesses, characters, logos,
-trademarks, watermark, photorealistic shirt/product mockups, busy background;
-add garbled-lettering terms only if your design includes text.
-
 OUTPUT — ONLY valid JSON, no fences:
-{"designs":[{"suitable_for_print":<bool>,"negative_prompt":"<str>","image_prompt":"<str>"}]}
+{"designs":[{"suitable_for_print":<bool>,"image_prompt":"<str>"}]}