[FEATURE] Alert (MacOS system or otherwise) when Claude has completed a task

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

Since Claude Code spends several minutes on tasks, I'm switching to other work while waiting. Constantly switching back to see if it's done...

Proposed Solution

A system alert would be a godsend.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

Other

Use Case Example

Real-world example: for virtually every project, and every Claude Code task of any complexity.

Additional Context

_No response_