模板导出增强 + 模特性别分组 + 三合一提示词精简

1) 模板导出：识别「基码表-胸围」填 sku.bust（多个胸围列都填）；申报价格模糊匹配多列统一按加价后价格填写；详情图文不再拼接 img_url_2；SPU 款式来源统一填「现货款」；商品产地国家简称映射（沙特→沙特阿拉伯）
2) 模特性别分组：model_features 按男女分组，按模板类目含男/女固定取对应性别模特（含 Pinterest 模式 pipeline）
3) 三合一提示词：去掉 DESIGN CONTENT 四要素描述（设计已由设计稿提供）
4) 生图尺寸：全部改为读 config 不再硬编码（设计图 compose.design_size / 合成图 compose.size / 种草图 seed_shot.size）

configs/pinterest/AU.yaml

@@ -41,3 +41,42 @@ seeds:
   - australian animals
   - beach house retro
   - australian minimal
+  - australian emu
+  - australian cockatoo
+  - kookaburra
+  - platypus
+  - wombat
+  - tasmanian devil
+  - australian crocodile
+  - australian whale
+  - australian dolphin
+  - australian sea turtle
+  - australian reef fish
+  - australian jellyfish
+  - australian seahorse
+  - australian octopus
+  - australian coral
+  - australian mangrove
+  - australian rainforest
+  - australian waterfall
+  - australian canyon
+  - australian outback stars
+  - australian wildflower
+  - australian wattle
+  - australian gum tree
+  - australian fern
+  - australian surfboard
+  - australian boomerang
+  - australian retro car
+  - australian retro train
+  # —— 节日主题（适合印花，避开宗教人物/国旗/酒精/猪等敏感项）——
+  - australia day fireworks
+  - easter bilby
+  - summer christmas
+  - beach santa
+  - new year sydney fireworks
+  - anzac poppy
+  - spring racing carnival
+  - surf lifesaving
+  - autumn leaves
+  - winter wildlife