Rebase & merge V4 back to main#396

Merged

koujl merged 12 commits intomainfrom

Mar 9, 2026

Commits on Mar 6, 2026

v4.x Support fixed-size BlobHeader (#365)

authored and
koujl
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Refactor verify_blob to eliminate duplicate codes
koujl
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Commits on Mar 9, 2026

Enable partial data reading for HDD performance
koujl
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Add shard meta (#371)

yuwmao
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koujl
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Add validation to user_key_size
koujl
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Add compatibility & migration for v1 shard metadata (#375)
koujl
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Bump Conan version

xiaoxichen
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koujl
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change gc policy (#380)

JacksonYao287
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koujl
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Fix v1_ShardInfo mem layout
koujl
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Add API to trigger snapshot creation manually

yawzhang
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koujl
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add trigger gc api (#379)

JacksonYao287
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koujl
committed
Prepare merging to main: bump version to 4.1
koujl
committed