QuakeWang opened a new pull request, #8462:
URL: https://github.com/apache/paimon/pull/8462
### Purpose
Daft BLOB File conversion parsed serialized BlobDescriptor bytes manually.
That bypassed the shared descriptor validation, so malformed bytes could leak
low-level parsing errors, and descriptors with unsupported versions or invalid
magic could be accepted.
This PR reuses `BlobDescriptor.deserialize` in the Daft conversion path and
adds regression coverage for malformed descriptors while preserving normal
descriptor-to-File conversion behavior.
### Tests
- `python -m pytest paimon-python/pypaimon/tests/daft/daft_blob_test.py -q`
- `python -m pytest
paimon-python/pypaimon/tests/daft/daft_blob_read_test.py -q`
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