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cucadmuh
2224ddbe78
* feat(perf): add on-demand (ui) throughput to cover pipeline cpm Cover cpm previously measured only the native backfill (lib) via the cover:library-progress done delta. Add a parallel UI series: every completed on-demand Rust cover ensure (grid / now-playing) records a timestamp, surfaced as a covers-per-minute rate. Both are exposed in the live cover diag, shown as separate Backfill (lib) / On-demand (ui) cards in the Monitor tab (each pinnable to the overlay) and as lib/ui rows in the Cover pipeline overlay block. * docs(changelog): note cover on-demand (ui) throughput (PR #947) Add CHANGELOG entry and credits line for the UI cover cpm metric. * fix(perf): source on-demand (ui) cpm from backend produced-cover count The JS ensure-queue counter never tracked: produced covers return hit:true (only misses/errors are hit:false), and ensure-queue dedup/HMR made client counting unreliable. Count on-demand covers natively in ensure_inner on the produce path (non-bulk, past the cache-hit gate), expose a cumulative uiEnsuredTotal in the pipeline stats, and derive the per-minute rate on the frontend from polled deltas — mirroring the lib backfill series. * perf(cover): measure cpm over trailing 5s instead of full minute A 60s rolling average added too much inertia, flattening real bursts and stalls in both the lib backfill and on-demand (ui) cover throughput. Compute the rate from the trailing 5s of samples (still extrapolated to per-minute), so the figure reacts promptly and decays to 0 within the window when idle.