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Perf/speed pass - #8
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The full edition now optimises for latency; RAM/CPU/GPU use is no longer a constraint there (Astur Lite unchanged). Measured on a hidden-desktop bench against 84d857b (interleaved medians): animated switch ~187 -> ~38 ms; layout change 17.4 -> 8.3 ms (slow apps 60.7 -> 12.0 ms); 4-switch IPC burst to final workspace 735 -> 33 ms; windows shown together and tiled 1/4 -> 4/4. Animations-off switch unchanged. Open/close ~1-2 ms slower on 3 monitors (tracked). Changes: wallpaper capture moved off the animation pre-signal path (generation-stamped cache); interruptible slide and switch coalescing; SWP_ASYNCWINDOWPOS for foreign windows (async_window_pos, default on); transition worker owns snapshots; frame-0 fast path; damaged-box glide; DWM crossfade for fade mode; single SHOW hook with prefilter; targeted minimize retile; work-area refresh on SPI_SETWORKAREA; event-driven config reload with per-group apply; launcher search workers and provisional rows; per-thread icon caches; tray, volume and launch off the hook/manager threads; latency-thread priority; debug-level stage probes and a profiling profile. Fixes: windows shown during a retile were never tiled (global SUPPRESS race); app-driven hides re-check visibility before untracking; foreground-lock restore passed a pointer as the value; config read errors other than NotFound overwrote the user's config with defaults; mouse hook button-up arms took the STATE lock unguarded. Not yet verified on a live desktop: animation, focus and launcher paths. plan/ docs not updated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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September 30, 2026 04:02
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