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Vance Ingalls
381887541f
Address two max-effort code-review findings on PR #2056 not covered by the earlier review-gap commit: - captureFrameToBufferPipelined's static-dedup reuse branch never advanced session.lastEncodeResultFrame, unlike its sibling real-capture branches. The gap-check window is computed from that watermark, so every consecutive reuse in a static run rescanned an ever-widening window instead of just the newest frame — O(n^2) total work over a long static stretch instead of O(n). - The "single-threaded, no race" justification on the shared parallelGuard closure was wrong: the guard has real internal await points (recapture, PSNR) between reading and writing its sizes/absFloor/acceptedSmall state, so concurrent workers' calls do interleave there (confirmed). Replaced with the actual reason it's safe: absFloor only ratchets down, sizes is append-only and order-independent for the median, and acceptedSmall's fast path re-validates by exact byte-equality regardless of which worker wrote the reference buffer.