[FEATURE] Feature request: configurable usage notifications (context, session, weekly)

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

I would love to get notified on my phone or on my laptop about context usage, session usage and weekly usage percentages. It would be useful to know when i've hit 50% and 80%

<img width="268" height="240" alt="Image" src="https://github.com/user-attachments/assets/faaebae2-e5ae-4702-b2ce-82500f66009a" />

for all 3 of these

Proposed Solution

mobile claude android app notification / desktop push notification / email notification maybe

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Interactive mode (TUI)

Use Case Example

_No response_

Additional Context

_No response_