lsq-dsh-plugins/dsh-windows-notifications

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Windows desktop notifications, optional sounds, and DSH-styled in-page cards for DeepSeek Harness Web. Keep the DSH tab open and receive task results or requests for attention while working in another application.

Notification behavior

By default, one event produces either a Windows notification or an in-page card, not both. Sound is independent and can accompany either presentation.

DSH state	Default presentation
Tab visible and browser window focused	DSH in-page card
DSH visible on another monitor while a different application is focused	Windows notification
Another browser tab is active or the browser is minimized	Windows notification
Windows notification unavailable or rejected	In-page card fallback, when enabled

The decision uses browser visibility and focus rather than monitor count. If “Only show system notifications while DSH is inactive” is disabled, Windows notifications may also appear while DSH is focused; a successfully delivered Windows notification still suppresses the in-page card for that same event.

Events

• Task completed normally.
• Task failed, was aborted, blocked, interrupted, or reached the output limit.
• DSH is waiting for approval, plan review, or an answer to a question.
• Optional completion and failure notifications from subagents.

Clicking a Windows notification focuses DSH and opens the related Session. The plugin reads the durable Harness turn/end result instead of inferring completion from a transient running-state change. Initial page load, refresh, and reconnect establish a silent baseline, so old events are not replayed as new notifications.

Settings

Open Settings → Notifications inside DSH Web.

Setting	Default	Purpose
Enable notifications	On	Master switch for task notifications
Windows notifications	On	Use the browser Notification API
Only while DSH is inactive	On	Avoid a system alert while actively viewing DSH
In-page notifications	On	Show a DSH-styled card when no Windows alert is delivered
Notification sound	On	Play a synthesized Web Audio chime
Volume	55%	Set the chime volume
Task completed	On	Notify successful task completion
Failures and interruptions	On	Notify non-successful turn endings
Waiting for your action	On	Notify approvals, plan reviews, and questions
Subagent notifications	Off	Include subagent completion and failure events

Windows notifications, in-page cards, and sound each have a separate test action. Repeated Windows or in-page tests replace the unfinished test of the same kind instead of building a queue; real task notifications retain their arrival order.

Installation

Install the public package into the DSH Web profile:

dsh plugin --profile web add @lsq64737/dsh-windows-notifications

Restart DSH Web if it is already running. Run the same add command to update an existing installation.

Remove the plugin with:

dsh plugin --profile web remove @lsq64737/dsh-windows-notifications

First use

1. Open DSH Web and go to Settings → Notifications.
2. Select Allow notifications.
3. Accept the browser's notification permission prompt.
4. Run Test Windows notification, Test in-page notification, and Test sound.

Browsers require a user gesture before requesting permission, so the plugin never opens the permission prompt automatically during page load. If permission was denied previously, restore it from the site's permission settings in the browser before testing again.

Browser and Windows requirements

• The DSH tab must remain open. Closing the tab or browser stops all notification processing.
• Windows notifications require a browser and page origin that expose the Notification API in a permitted secure context.
• Chrome or Edge site permissions and Windows Do Not Disturb settings remain authoritative; the plugin cannot bypass them.
• Windows controls the system notification frame, placement, and duration. The plugin supplies the DSH icon, title, message, and click action.
• A browser may throttle or freeze a long-unused background tab, delaying notifications even while the DSH connection appears active.

Privacy and reliability

• The plugin does not use a third-party notification service. Event handling stays inside DSH Web, the browser Notification API, Web Audio, and Windows.
• Notification text can include the DSH Session title and is therefore visible to Windows and on the lock screen according to system notification settings.
• Sounds are synthesized with Web Audio; no audio file is downloaded.
• A desktop-delivery failure falls back to an in-page error or task card when in-page notifications are enabled.
• Operational messages use the windows-notifications: prefix in Harness logs or the browser console. They cover permission, delivery, settings, and audio failures without recording credentials.

Development

Requirements: Node.js 24 or newer and a compatible DSH development workspace.

npm ci
npm run typecheck
npm test
npm run build

License

MIT