gui_toolkit 0.32.0

Added

• Input -> screen latency, stage by stage (render/latency.odin, off by default): render.set_latency_probe(r, true) records, for each frame that reached the screen and was built from input, the time waiting for the frame (wait: event received -> frame began), building and drawing (work), Present (present) and scan-out (scan: Present returned -> the refresh that showed it), then latency_summary(r) gives p50 / p95 / max / mean of each, the total in refreshes of the monitor, the share of frames built from input and how many presents the swap chain's statistics count as not yet shown. latency_reset, latency_summarize (pure), latency_sample_of. The application tells when the frame read its input with render.set_frame_read. Displayed_Frame gained read, drawn and call (when frame_end and Present were called). Both backends feed it; nothing is recorded or allocated while the probe is off (render/latency_test.odin: arithmetic and ring, no clocks).