Vflash 0.6.22

2026-10-10 quality review: Temporal quality qualification for the optional Sage path is reopened. Consecutive native-resolution crops and framewise diagnostics of existing 2048-square clips show detail fluctuations in both Flash/Veda and Sage/Veda, with potentially stronger local variation in Sage. The cause has not been isolated; the earlier five-time-point review does not establish flicker-free output. Treat Sage as experimental, not a production quality recommendation. Measured speed and memory observations remain valid within their recorded scope; defaults and released binaries are unchanged.

Keep profiled native blocks on the ordinary path's activation lifetimes: do not retain attention temporaries or pre-gather FFN modulation across the next large allocation. CPU FP32/BF16 parity and weak-reference checks cover both paths; a seven-video RTX 5090 integration completes the previously failing profiled 1536×864/15 s request and 2048²/5 s output. This fixes diagnostic-path memory overhead, without broadening the existing canvas contract.

Add an explicit veda_dense_backend="sageattention2" option for single-SM120 Veda, also exposed by generate --veda-dense-backend sageattention2. The ten dense layers use separately installed, pinned SageAttention 2.2.0 with INT8 QK / FP8 PV; the other forty Veda layers are unchanged. Flash remains the default. Unsupported architectures, missing extensions and kernel failures raise errors instead of silently changing execution. See installation and measured scope.

Same-instance I2VA warm full-generation controls measured 1536×864/15 s at 257.718/223.718 s on RTX PRO 6000 Server (13.19% shorter) and 379.763/310.595 s on RTX 5090 (18.21%). PRO 2048²/5 s was 314.753/302.123 s (4.01% shorter). The 5090 also completed 2048²/5 s at 368.807 s and 26.982 GiB denoising allocation, without a matched Flash control. These times include conditioning, denoising and media but exclude initialization and delivery. The PRO's 1205.634 s initialization prevents claiming a cold-start improvement. Complete AV decode, application playback, five sampled times and native crops accompany the comparisons; changed motion, existing camera adherence defects and unassessed audio semantics remain. No general quality-equivalence or H100 Sage qualification is claimed.

Private integration evidence: video-gen 40745220; only aggregate measurements are public. Product deployment is separate from this package release.