SciF-Lin/dsh-notify-sound-plus

Per-event sound alerts and system notifications for DeepSeek Harness. Four events — turn complete, question, approval and error — each get a switch, a sound picker with instant preview and a system-notification master switch. Twelve built-in tones plus a silent option are synthesized at runtime with the Web Audio API, so no audio files ship with the package; the four per-event defaults differ in register, timbre and rhythm (a high sine strike, a rising triangle pair, a repeated square pulse and a low sawtooth descent) so they are distinguishable without comparing pitches. A mode dropdown in General settings offers on, off and a smart mode that defers to the whale widget so the two never double up; the same row has a preview button and a gear opening a full settings dialog with volume, a skip-while-focused option and upload of your own audio up to 2 MB. A speaker button in the composer mutes sound without touching notifications. Works in the web GUI and the Electron desktop app.