perf(block): sync.Map -> atomic bitmap for cache dirty tracking#2235

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lev-block-cache-bitmap

Commits on Mar 26, 2026

perf(block): replace sync.Map with atomic bitmap for block cache dirty tracking

levb
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claude
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Review fixes: cap setIsCached to bitmap bounds, concurrent test, nits

levb
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claude
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chore: auto-commit generated changes
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Commits on Mar 27, 2026