[Performance]: reduce token usage & improve performance, such as with rust token killer rtk

[ahundt]

Performance Issue Description

Right now cli commands use more tokens than necessary, increasing costs and runtimes.

https://github.com/rtk-ai/rtk aka "rust token killer" is a rust cli command wrapper that recoverably filters cli commands to the necessary outputs, saving tokens, and in many cases improving model performance due to decreased context filler.

Token Savings (30-min Claude Code Session)

Operation	Frequency	Standard	rtk	Savings
ls / tree	10x	2,000	400	-80%
cat / read	20x	40,000	12,000	-70%
grep / rg	8x	16,000	3,200	-80%
git status	10x	3,000	600	-80%
git diff	5x	10,000	2,500	-75%
git log	5x	2,500	500	-80%
git add/commit/push	8x	1,600	120	-92%
cargo test / npm test	5x	25,000	2,500	-90%
ruff check	3x	3,000	600	-80%
pytest	4x	8,000	800	-90%
go test	3x	6,000	600	-90%
docker ps	3x	900	180	-80%
Total		~118,000	~23,900	-80%

Of course, I saw you take care to optimize for model idiosyncrasies per your blog and I expect rtk integration would need some optimization to work properly.

Issue Type

Other

Steps to Reproduce

see tokens savings table, cli commands like ls / tree produce lots of extraneous output.

Expected Performance

see tokens savings table

Actual Performance

see token savings table

Performance Measurements

Project Size

No response

Environment Details

Macos M3 Max, but applies across all platforms.

Configuration

Profiling Data

Frequency

Always

Workarounds

No response

Additional Context

No response