Add action buttons to notifications

[shanselman]

Goal

Add clickable buttons to toast notifications.

toasty "Build complete" --button "Open Folder" --button-action "explorer.exe ."

Toast Button XML

<actions>
  <action content="Open Folder" arguments="open-folder" />
  <action content="Dismiss" arguments="dismiss" activationType="system" />
</actions>

Use Cases

• "Open Folder" → opens build output directory
• "View Logs" → opens log file
• "Retry" → re-runs command
• "Copy" → copies output to clipboard

Challenges

• Same activation issues as click-to-focus (Click notification to focus terminal window #4)
• Need to handle arguments and map to actions
• Unpackaged app activation is complex

Simple Start

Maybe just support:

• --button-url "Open Docs" "https://..." → opens URL
• --button-path "Open Folder" "C:\path" → opens folder

These work via protocol handlers that already exist.

@copilot explore toast action buttons for unpackaged desktop apps