[FEATURE]

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'd like when you /exit Claude Code you get a summary similar to Gemini CLI's feature below:
This is kind of impressive wish Anthropic would add something like this to your cli system
╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ │
│ Agent powering down. Goodbye! │
│ │
│ Interaction Summary │
│ Session ID: 3f8b182d-63b1-4a8b-80e4-d6004c2992e7 │
│ Tool Calls: 738 ( ✓ 683 x 55 ) │
│ Success Rate: 92.5% │
│ User Agreement: 100.0% (735 reviewed) │
│ Code Changes: +2548 -3327 │
│ │
│ Performance │
│ Wall Time: 8h 41m 2s │
│ Agent Active: 2h 41m 19s │
│ » API Time: 2h 24m 50s (89.8%) │
│ » Tool Time: 16m 29s (10.2%) │
│ │
│ Model Reqs Input Tokens Cache Reads Output Tokens │
│ ──────────────────────────────────────────────────────────────────────── │
│ gemini-2.5-flash-lite 84 869,638 7,982 8,687 │
│ gemini-3-flash-preview 819 24,636,163 175,031,564 381,141 │
│ gemini-3.1-pro-preview 1 58,820 0 30 │
│ │
│ Savings Highlight: 175,039,546 (87.3%) of input tokens were served from the cache, reducing costs. │
│ │
│ To resume this session: gemini --resume 3f8b182d-63b1-4a8b-80e4-d6004c2992e7 │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

Proposed Solution

Add something to Claude Code that implements the above printout after /exiting the application.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Other

Use Case Example

1) It would be great for productivity tracking when you're leveraging Claude like to me perform 1000 commits a month across 12 repos.
2) It would give you stats that could show you your ROI
3) If you build it they will come

Additional Context

_No response_