HTTP-level load driver simulating ~100 guests uploading ~1000 images in bursts
over a window, plus SSE viewers and one real browser on /diashow. Correlates
upload→upload-processed (pipeline latency), waits for the compression backlog
to drain against DB ground truth, and emits per-status/latency metrics with
pass/fail flags. Includes a realistic-JPEG generator and a diashow-SSE
regression check (confirm-diashow-fix.mjs). Run artifacts are gitignored.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
