dsh-prevent-scd — DSH 防猝死小卫士 🐱

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dsh-prevent-scd is a playful rest-reminder pet plugin for the DeepSeek Harness (DSH) web UI — like ChatGPT's pet, it comes out and causes trouble to make you take a break.

It watches for traces of human operation in DSH sessions and nags you when:

• you have been working continuously for hours (default 3 h, any configurable), or
• it is late night (default 23:00–06:00, configurable) and you are still operating.

A cute hand-drawn nurse-cat (inline SVG, zero external assets) lives in the composer strip, turns worried when you approach the limit, then blocks the whole screen with a bouncing 「⛔ 休息!」 sign — intercepting Enter — until you choose “I'll rest now” (quiet for 2 h) or “just 15 more minutes” (snooze).

Highlights

• Host half (Node): listens to session/event real user/messages (plugin-injected / replay events do not count), maintains continuous-work timing.
• Browser half (Web): persistent status line + full-screen mischief overlay, four SVG poses (napping / worried / blocking / relieved farewell), CSS animations (breathing, tail wag, shake, floating Zzz).
• Every threshold is configurable: maxWorkMinutes, idleBreakMinutes (a no-op gap longer than this resets the clock, default 30 min), late-night window, cooldown, snooze.
• State persists to $DSH_HOME/prevent-scd/state.json, surviving dsh restarts.
• No external assets, no network calls, works offline. 18 unit/integration/smoke tests.

Quick install

dsh plugin --profile web add -w "path/to/dsh-prevent-scd"
# restart the dsh web service to activate

Override config in the profile's cordis.patch.yml (hot-reloaded, no restart needed):

- id: prevent-scd
  config:
    maxWorkMinutes: 120
    idleBreakMinutes: 20
    lateNightStart: '23:00'
    lateNightEnd: '06:00'