Yijia-Xiao d5ba41bac3 fix(dataflows): report a vendor failure as a vendor failure ...

- yfinance returned its errors as text, which the router counted as an answer, so the chain stopped and the text reached the analyst
- an empty result is checked against the vendor being reachable, so an outage is not reported as a company with no data
- a chain where every vendor is unavailable says so instead of ending the run

2026-09-18 01:49:52 +00:00

9.9 KiB

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