v0.7.0

Fixed

• Severe input lag when a specific audio output device was selected: the app checked device presence inside the audio engine loop every second, and that check could take up to ~2 seconds depending on your device's position in the system list — delaying both the sound and the logo animation by that much, seemingly at random. Sound now plays within ~15ms of a keystroke regardless of which output device is selected.
• Vietnamese input methods (Telex/UniKey/EVKey) no longer cause bursts of clumped sounds: when an IME rewrites text (e.g. "dd" → "đ", or restoring a mistyped syllable), it synthetically injects backspaces and replacement keys — each of which used to play a sound all at once. Software-injected keystrokes are now ignored; only keys you physically press make sound. Note this also means on-screen keyboards and macro tools no longer trigger sounds.
• Logo animation keeps up with fast typing: the pressed-state transition was too slow to render each stroke at speed; each keystroke now shows a distinct pulse.

Changed

• Removed the automatic switch to the system default output when the selected device disappears. The background polling this required is gone completely — zero periodic device probing while you type. If you unplug the device you selected, the app stays silent until you pick another one in Settings (or restart); your saved choice is kept. Selecting "System Default" is unaffected — the OS handles device changes itself.
• Settings → Devices note updated: device changes apply immediately, no restart needed (restart remains a troubleshooting option).

Added

• Diagnostic trace mode: launch with the environment variable MECHVIBES_TRACE=1 to print one line per keystroke with per-stage timings (input capture → audio engine → sound → UI) — useful when reporting latency issues.

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Downloads

• Windows: MechvibesDX-<version>-Setup-x64.exe — installer, the only asset the in-app updater uses.
• Linux (Debian/Ubuntu): .deb — install with sudo dpkg -i. It does not add you to the input group; run sudo usermod -a -G input $USER and log out/in, or key events won't be seen.
• macOS (experimental, untested): unsigned and never run on a real Mac. Gatekeeper will block it — see README-macos.txt. Treat as a preview.