View-tag scanner: round-2 optimizer

[truthixify]

Extra labels: stellar, perf
Tier: M (2-4 days) | Type: perf

Context. View-tag batching hit 229x speedup. Profile identified two remaining hotspots: per-event allocation churn + a redundant point decompression per candidate. Push another 2-3x on CPU before we lean on GPU.

Scope.

• Pool + reuse per-event buffers.
• Cache decompressed points across the batch.
• Micro-bench per-hotspot fix with deno bench --json.
• Measurable target: ≥ 2x on 10k events on the existing baseline.

Acceptance.

• Bench captured pre/post per fix
• Pool sized to keep memory bounded on 100k batches
• No public-API changes

Files. src/chains/stellar/scanner/, test/chains/stellar/bench/scan.bench.ts.

[chinecherem58]

@chinecherem58 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer I will like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @chinecherem58 to this issue.

[drips-wave]

Congratulations, @chinecherem58! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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