Add IO concurrency limiting for shard cache reads#2163

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wolfv wants to merge 3 commits intomainfrom

claude/fix-repodata-open-files-TRv0Y

Commits on Mar 4, 2026

fix(repodata-gateway): throttle shard cache reads with IO semaphore
claude
committed
fix(repodata-gateway): add dedicated io_concurrency_semaphore to gate shard cache reads
claude
committed
fix(repodata-gateway): fix missing io_concurrency_semaphore arg in test call sites
claude
committed