chore: 补全2026-08-21估值泡沫字段

Cai

2026-08-21 057e59a212fb1ca9e17a749668eb44d95c2aae32

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{"rc":0,"data":{"code":"001270","name":"铖昌科技","klines":["2026-07-31,92.00,92.56,94.00,91.50,123456,1140000000,0,0,0,0"]}}