[zjw1111]

Purpose

Linked issue: N/A

Remove the repository's Git LFS dependency and align the affected project metadata, tests, build examples, and documentation with the current implementation.

• Store the BTree compatibility fixtures as regular Git blobs.
• Remove the obsolete SST compatibility fixtures and disable the Java SST compatibility test that depended on them.
• Remove Git LFS setup from development and CI workflows.
• Add the required Apache Spark and Apache Iceberg C++ attributions.
• Port the applicable maintenance and documentation updates from chore: prepare Apache Paimon C++ 0.2.3 release apache/paimon-cpp#155, excluding version changes and scripts/releasing.
• Keep the published documentation URL at https://alibaba.github.io/paimon-cpp/.

Tests

• pre-commit run --all-files
• pre-commit run --files include/paimon/file_store_commit.h include/paimon/commit_message.h docs/source/user_guide/write.rst docs/source/user_guide/prefetch.rst
• git diff --check
• Configured and built the standalone examples against the installed package.
• Verified that the committed tree contains no Git LFS pointer files.

The full Sphinx HTML build is blocked by the environment's urllib3 v2 and OpenSSL 1.0.2 combination. Rebuilding the release global-index target is blocked by an existing mismatch with the patched Arrow API.

API and Format

No API signature, storage format, or protocol changes. Public API comments were updated to match the existing commit behavior.

Documentation

Yes. The build, data format, prefetch, write, commit, and related API documentation now reflect the current implementation.

Generative AI tooling

Generated-by: OpenAI Codex (GPT-5).

[lxy-9602]

+1