[FEATURE] Add cross-platform notifications (Terminal/VSCode/Apple Watch) for task status

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

What problem are you trying to solve?
Currently, using Claude Code for complex tasks (like large-scale refactoring or deep debugging) requires me to constantly monitor the terminal or VS Code window. Because these tasks involve long "Thinking" cycles or multiple tool-use steps, I often find myself "stuck" at my desk waiting for a response or a permission prompt (e.g., "Allow shell command?").

Why do you need this feature?

Lack of Mobility: I cannot step away from my computer (e.g., to get coffee or move to another room) without losing track of the progress.

Workflow Interruption: If I switch to another window to work on a different project, I don't get an immediate alert when Claude finishes or when it is stuck waiting for my input.

Delayed Feedback: Without a system-level notification that can sync to my Apple Watch, I miss the exact moment a task is completed, which adds up to significant idle time throughout the day.

Proposed Solution

I propose the addition of native system notification support to Claude Code. The goal is to provide non-intrusive "toast" notifications (similar to standard messaging apps) that pop up in the system tray or notification center, mirroring the key events in Claude's workflow. This is crucial for maintaining focus without having to constantly monitor the terminal.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_