feat(store-mapping): JD 缓存 deeplink 失效标记(对标淘宝)

store_mapping 加 jd_deeplink_invalid_at 列 + 迁移(down_revision=store_mapping_tb_dl_invalid);
mark_jd_deeplink_invalid 按 id_jd 标记 + lookup_nearest 过滤已失效 JD 候选;
/internal/store-mapping/invalidate 接 jd 分支。配 pricebot 京东缓存 deeplink 失效回退。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/models/store_mapping.py

@@ -105,6 +105,8 @@ class StoreMapping(Base):
     jd_share_url: Mapped[str | None] = mapped_column(String(256), nullable=True)         # 3.cn 短链
     jd_resolved_url: Mapped[str | None] = mapped_column(Text, nullable=True)             # 反查出的目标 openapp.jdmobile:// deeplink
     jd_deeplink: Mapped[str | None] = mapped_column(Text, nullable=True)                 # 拼好的 pages/search 店内搜索 deeplink
+    # 京东 deeplink 失效标记(同 taobao_deeplink_invalid_at):撞"当前门店超出配送范围"页时被置,NULL=有效。
+    jd_deeplink_invalid_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
 
     # 灵活字段兜底(免得加字段就迁移)
     attrs: Mapped[dict | None] = mapped_column(_JSON, nullable=True)