Hard-fail on provider CID mismatch instead of warn#110
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`create_drive` previously logged a `tracing::warn!` and continued when the provider's returned data_root disagreed with the locally-computed CID, defeating content-addressing's only integrity guarantee. Now returns a new `FsClientError::CidMismatch` and refuses to cache or proceed. Adds unit coverage for both the matching and mismatching path via a small `verify_cid` helper.
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The
create_drivefunction previously logged atracing::warn!and continued when the provider's returned data_root disagreed with the locally-computed CID, defeating content-addressing's only integrity guarantee.Now returns a new
FsClientError::CidMismatchand refuses to cache or proceed. Adds unit coverage for both the matching and mismatching path via a smallverify_cidhelper.