docs: organize stock valuation artifacts and guide

Cai

2026-08-04 da730108a672e1daf25fdcce9fd74887e3fd65c3

1
{"success":true,"result":{"data":[{"SECURITY_CODE":"001270","REPORT_DATE":"2026-08-01","RATING_ORG_NUM":4,"YEAR1":2026,"YEAR1_NET_PROFIT":170666666.67}]}}