-- 为更多著名文物补充封面图（Wikimedia Commons 公有领域，best-effort；
-- 经由后端图片代理加载，文件名不存在时前端自动回退到统一示意图）
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Dwelling_in_the_Fuchun_Mountains.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000025' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Sword_of_Goujian.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000005' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Bianzhong_of_Marquis_Yi_of_Zeng.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000006' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Four_sheep_square_zun.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000004' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Hongshan_Jade_Dragon.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000037' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Bronze_Standing_Figure_Sanxingdui.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000040' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Golden_Sun_Bird.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000042' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Jade_burial_suit.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000038' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Lianhefanghu.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000014' AND image_url IS NULL;
UPDATE artifacts SET image_url = 'https://commons.wikimedia.org/wiki/Special:FilePath/Terracotta_Army.jpg?width=1200' WHERE id = 'b0000000-0000-0000-0000-000000000050' AND image_url IS NULL;